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Добірка наукової літератури з теми "WIND RESPONCE"

Автор: Grafiati

Опубліковано: 11 вересня 2023

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Статті в журналах з теми "WIND RESPONCE"

KATAGIRI, Junji, Takeshi OHKUMA, and Hisao MARUKAWA. "ANALYTICAL METHODS FOR COUPLED WIND RESPONCE OF ACROSS-WIND AND TORSION WITH MOTION-INDUCED WIND FORCES." Journal of Structural and Construction Engineering (Transactions of AIJ) 67, no. 555 (2002): 45–52. http://dx.doi.org/10.3130/aijs.67.45_4.

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Carlini, Maurizio, Tommaso Honorati, and Sonia Castellucci. "Photovoltaic Greenhouses: Comparison of Optical and Thermal Behaviour for Energy Savings." Mathematical Problems in Engineering 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/743764.

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The production of energy from renewable sources, the diversification of the productive activities, and the development of photovoltaic technology and integrated systems have led to the development of solar greenhouses. The interest of the developers and designers is now to seek new approaches to combine the electricity and food production optimally. The interaction of factors as outside local climate, exposure, slope, soil, altitude, wind conditions, structural materials, or cultivated plant species, influences greatly the energy balance. This paper illustrates the comparison of optical and thermal behavior of a solar greenhouse and a similar glass greenhouse, devoted to the production of soil-less tomatoes in three different Italian areas, with computational aspects and methods of the TRNSYS simulation. Values of climatic parameters are obtained as a responce for the feasibility of the cultivation under PV modules. The results show energy savings both for heating and cooling due to PV panels, adding a new reason for the realization of these systems.

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Dufour, C. O., J. Le Sommer, J. D. Zika, M. Gehlen, J. C. Orr, P. Mathiot, and B. Barnier. "Standing and Transient Eddies in the Response of the Southern Ocean Meridional Overturning to the Southern Annular Mode." Journal of Climate 25, no. 20 (May 11, 2012): 6958–74. http://dx.doi.org/10.1175/jcli-d-11-00309.1.

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Abstract To refine the understanding of how the Southern Ocean responds to recent intensification of the southern annular mode (SAM), a regional ocean model at two eddy-permitting resolutions was forced with two synthetic interannual forcings. The first forcing corresponds to homogeneously intensified winds, while the second concerns their poleward intensification, consistent with positive phases of the SAM. Resulting wind-driven responses differ greatly between the nearly insensitive Antarctic Circumpolar Current (ACC) and the more sensitive meridional overturning circulation (MOC). As expected, eddies mitigate the response of the ACC and MOC to poleward-intensified winds. However, transient eddies do not necessarily play an increasing role in meridional transport with increasing resolution. As winds and resolution increase, meridional transport from standing eddies becomes more efficient at balancing wind-enhanced overturning. These results question the current paradigms on the role of eddies and present new challenges for eddy flux parameterization. Results also indicate that spatial patterns of wind anomalies are at least as important as the overall change in intensity in influencing the Southern Ocean’s dynamic response to wind events. Poleward-intensified wind anomalies from the positive trend in the SAM are far more efficient in accelerating the ACC than homogeneous wind anomalies.

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Kapoor, Amber, Slimane Ouakka, Sanjay R. Arwade, Julie K. Lundquist, Matthew A. Lackner, Andrew T. Myers, Rochelle P. Worsnop, and George H. Bryan. "Hurricane eyewall winds and structural response of wind turbines." Wind Energy Science 5, no. 1 (January 14, 2020): 89–104. http://dx.doi.org/10.5194/wes-5-89-2020.

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Abstract. This paper describes the analysis of a wind turbine and support structure subject to simulated hurricane wind fields. The hurricane wind fields, which result from a large eddy simulation of a hurricane, exhibit features such as very high gust factors (>1.7), rapid direction changes (30∘ in 30 s), and substantial veer. Wind fields including these features have not previously been used in an analysis of a wind turbine, and their effect on structural loads may be an important driver of enhanced design considerations. With a focus on blade root loads and tower base loads, the simulations show that these features of hurricane wind fields can lead to loads that are substantially in excess of those that would be predicted if wind fields with equally high mean wind speeds but without the associated direction change and veer were used in the analysis. This result, if further verified for a range of hurricane and tropical storm simulations, should provide an impetus for revisiting design standards.

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Kilpatrick, Thomas, Niklas Schneider, and Bo Qiu. "Atmospheric Response to a Midlatitude SST Front: Alongfront Winds." Journal of the Atmospheric Sciences 73, no. 9 (August 10, 2016): 3489–509. http://dx.doi.org/10.1175/jas-d-15-0312.1.

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Abstract Satellite observations and modeling studies show that midlatitude SST fronts influence the marine atmospheric boundary layer (MABL) and atmospheric circulation. Here, the Weather Research and Forecasting (WRF) mesoscale model is used to explore the atmospheric response to a midlatitude SST front in an idealized, dry, two-dimensional configuration, with a background wind oriented in the alongfront direction. The SST front excites an alongfront wind anomaly in the free atmosphere, with peak intensity just above the MABL. This response is nearly quasigeostrophic, in contrast to the inertia–gravity wave response seen for cross-front background winds. The free-atmosphere response increases with the background wind , in contrast to previously proposed SST frontal MABL models. The MABL winds are nearly in Ekman balance. However, a cross-front wind develops in the MABL as a result of friction and rotation such that the MABL cross-front Rossby number ε ≈ 0.2. The MABL vorticity balance and scaling arguments indicate that advection plays an important role in the MABL dynamics. Surface wind convergence shows poor agreement with MABL depth-integrated convergence, indicating that the MABL mixed-layer assumption may not be appropriate for SST frontal zones with moderate to strong surface winds.

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Schneider, Niklas, and Bo Qiu. "The Atmospheric Response to Weak Sea Surface Temperature Fronts*." Journal of the Atmospheric Sciences 72, no. 9 (September 1, 2015): 3356–77. http://dx.doi.org/10.1175/jas-d-14-0212.1.

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Abstract The response of the atmospheric boundary layer to fronts of sea surface temperature (SST) is characterized by correlations between wind stress divergence and the downwind component of the SST gradient and between the wind stress curl and the crosswind component of the SST gradient. The associated regression (or coupling) coefficients for the wind stress divergence are consistently larger than those for the wind stress curl. To explore the underlying physics, the authors introduce a linearized model of the atmospheric boundary layer response to SST-induced modulations of boundary layer hydrostatic pressure and vertical mixing in the presence of advection by a background Ekman spiral. Model solutions are a strong function of the SST scale and background advection and recover observed characteristics. The coupling coefficients for wind stress divergence and curl are governed by distinct physics. Wind stress divergence results from either large-scale winds crossing the front or from a thermally direct, cross-frontal circulation. Wind stress curl, expected to be largest when winds are parallel to SST fronts, is reduced through geostrophic spindown and thereby yields weaker coupling coefficients.

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Marler, Thomas E. "Growth Responses to Wind Differ among Papaya Roots, Leaves, and Stems." HortScience 46, no. 8 (August 2011): 1105–9. http://dx.doi.org/10.21273/hortsci.46.8.1105.

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‘Sunrise’ and ‘Tainung 2’ papaya seedlings were subjected to 3 weeks of ambient winds in Guam during five experiments, and growth responses of roots, leaves, and stems were quantified to compare speed and extent of the plasticity among the organs. The cultivars responded similarly with 1 week eliciting stem growth responses and 2 weeks eliciting root responses. The timeframe of these studies was sufficient to enable adaptive responses in all three organs. Wind reduced stem and leaf expansion rate but not root extension rate, providing one example of how the form of response differed among the organs. A dose–effect was evident among the experiments with magnitude of response increasing with mean ambient wind speed. Asymmetric stem diameter and root tip density were examples of adaptive responses to directional wind load. These data on young papaya plants may be used to inform field experiments aiming to determine how chronic winds influence long-term growth and fitness.

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Toba, Yoshiaki, Kozo Okada, and Ian S. F. Jones. "The Response of Wind-Wave Spectra to Changing Winds. Part I: Increasing Winds." Journal of Physical Oceanography 18, no. 9 (September 1988): 1231–40. http://dx.doi.org/10.1175/1520-0485(1988)018<1231:trowws>2.0.co;2.

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Whitney, Michael M., and Daniel L. Codiga. "Response of a Large Stratified Estuary to Wind Events: Observations, Simulations, and Theory for Long Island Sound." Journal of Physical Oceanography 41, no. 7 (July 1, 2011): 1308–27. http://dx.doi.org/10.1175/2011jpo4552.1.

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Abstract The response to wind events in the Long Island Sound (LIS), a large macrotidal estuary influenced by rotation and stratification, is studied using long-term ferry-based current observations near the mouth, unstratified and stratified numerical simulations forced with along-estuary winds, and analytic solutions based on linear barotropic theory. The observed wind-event velocity anomalies for down-estuary winds have surface-intensified downwind flows flanking a deeper central upwind flow. Response to up-estuary wind events has a weaker magnitude and a broader and thicker downwind flow. The downwind and upwind flows are more laterally aligned than vertically layered, as determined by a newly defined dimensionless lateral alignment index. Simulation results and analytic solutions share the gross spatial patterns of the observed response, though statistical measures indicate weak agreement. Along-estuary variations in the simulation results and analytic solutions follow similar trends and are strongly influenced by variations of the bathymetric cross section. Wind-event anomalies in the section-averaged dynamics are dominated by the along-estuary pressure gradient opposing wind stress. In the stratified simulation, wind-driven density advection, isopycnal straining, and stirring modify stratification, eddy viscosities, and baroclinic pressure gradients. The wind-event response of the baroclinic pressure gradient is 15% of the barotropic gradient but is dynamically linked to response differences to up-estuary and down-estuary winds. The wind-event response asymmetries near the mouth are in qualitative agreement with observations and are opposite to asymmetries closer to the head.

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Parish, H. F., and L. R. Lyons. "Sensitivity studies of the E region neutral response to the postmidnight diffuse aurora." Annales Geophysicae 24, no. 6 (July 3, 2006): 1551–65. http://dx.doi.org/10.5194/angeo-24-1551-2006.

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Abstract. Measurements of the neutral thermosphere within the postmidnight substorm recovery phase diffuse aurora show very large horizontal winds, and strong vertical structure. Rocket, satellite, and ground based observations during the ARIA (Atmospheric Response in Aurora) campaigns, and earlier dawn side rocket observations, indicate neutral winds of up to 200 m/s, and a characteristic jet-like wind maximum around 110 to 120-km altitude, with strong shears above and below. The observed wind magnitudes are found to have a dependence on geomagnetic activity level, but recent modeling studies suggest that tides which propagate up from the troposphere and stratosphere may play an important role in generating the strong vertical variations in the neutral winds. The relative importance of auroral and tidal forcing in producing the measured wind structure is not known, however. Simulations have been performed using a three dimensional (3-D) high resolution limited area thermosphere model to understand the processes which generate the observed neutral structure within the postmidnight diffuse aurora. Parameters measured during the ARIA I observational campaign have been used to provide auroral forcing inputs for the model. Global background winds and tides have been provided by the CTIP (Coupled Thermosphere Ionosphere Plasmasphere) model. The sensitivity of the response of the neutral atmosphere to changes in different parameters has been examined. Variations in the amplitudes and phases of the propagating tides in the background winds are found to have significant effects on the neutral structure in the E region, and the wind structure below around 110km is found to be mainly produced by tidal forcing. Changes in the electric field and ion density affect the winds above around 120 km, and the importance of auroral forcing is found to depend on background winds. Variations in the orientation of the aurora relative to the background field, which may be caused by changes in the interplanetary magnetic field, are also found to modify the wind structure. When both auroral forcing and propagating tides are included, many of the basic characteristics of the wind structure are displayed, although the great strength of the wind shears is not well reproduced. The strength of the shears may be related to a currently unmodeled process, or to different types of waves.

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Дисертації з теми "WIND RESPONCE"

Moore, Ian F. "Inertial response from wind turbines." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/42939/.

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Wind power is an essential part of the strategy to address challenges facing the energy sector. Operation of the electricity network in 2020 will require higher levels of response and reserve from generation. The provision of inertial response from wind turbines was investigated. A model was developed for the simulation of frequency on the mainland UK system, including a simplified model for a synchronous generator to represent Full Power Converter turbines. Two different methods of inertia response, the step method and the inertia coupling method, were modelled and introduced into the turbine torque speed control. Simulations illustrated the effects on primary frequency control for a high penetration of wind turbines. Results are shown for different demand levels with generation losses of 1320GW and 1800GW. A comparison of the inertia functions is included and the effect of wind speed and the constant speed region of the maximum power extraction curve. For the scenarios modelled only a small change in turbine output was required for inertia response (0.02p.u). Without inertia response a large increase in synchronous plant response was needed. A test rig was constructed consisting of a Full Power Converter bridge and a synchronous generator driven by a dc machine. Power converters were designed and constructed by the candidate. Vector control of both the generator converter and grid converter was implemented on a dedicated control platform. The inertia coupling function was implemented and a test frequency deviation injected to represent a load generation imbalance. Results compared closely to those from the model and demonstrated the capability to closely couple turbine speed to system frequency with adjustment of the response via a filter if desired. The experimental work confirmed the adequacy of the simplified generator model and further confirmed the possibility of using inertia response. The inertia coupling function was considered suitable for use for the UK system.

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Song, Qingtao. "Surface wind response to oceanic fronts /." View online ; access limited to URI, 2006. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3225330.

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Rousseau, Guillaume 1982. "Wind-induced dynamic response of bridges." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/29416.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2004.
Includes bibliographical references (leaves 52-54).
Wind loading has long played a significant role in bridge design. Some spectacular failures, such as the Tay Bridge (Scotland, 1879), or the Tacoma Narrows Bridge (Washington State, 1940) acted as a painful reminder to engineers in case they had forgotten the importance of wind loading. Today, a constant drive for longer spans in suspension or cable-stayed bridges forces designers to give even more care to wind load. The Golden Gate Bridge (1280 m, San Francisco, built in 1937), which held the record for the longest span for 27 years, is now a distant 7th to the Akashi-Kaikyo (1991 m, Japan, 1998). Different in many ways, the current hunger of Japan and China for new infrastructure leads a renewal of innovation in bridge design and wind engineering. A few projects in Europe or the United States, like the Great Belt Bridge (1624 m, Denmark, 1998), or the Messina Bridge project (3300 m, Italy, not built) are part of the same trend. The design of such a structure is a real challenge for the designer. A good example is given by the Messina Bridge in Veneziano and Van Dyck, 1998. Wind loading in different directions, determination of the reference wind speed, earthquake load, numerous cases of traffic loading ... are investigated thoroughly. The intent of this thesis is to present the essentially dynamic behavior of bridges submitted to wind. The main phenomenon involved will be exposed, as well a method to evaluate the maximum response for given wind conditions. Theories and methods developed by A.G. Davenport and R.H. Scanlan support most of the developments in this text.
(cont.) This thesis will not deal with specific design issues, the analysis of the response being already quite an extensive topic. Rather, its purpose is to give the reader a better understanding of wind engineering, in the belief that good design is a complete thinking process based on understanding of the underlying behavior, and not the application of straightforward recipes. This is particularly true when dealing with those high-performance structures mentioned above.
by Guillaume Rousseau.
M.Eng.

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Lee, Kwang Hyun. "Responses of floating wind turbines to wind and wave excitation." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33564.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2005.
Includes bibliographical references (leaf 55).
The use of wind power has recently emerged as a promising alternative to conventional electricity generation. However, space requirements and public pressure to place unsightly wind turbines out of visual range make it desirable to move large wind farms offshore and into deeper coastal waters. A necessary step for the deployment of wind turbines into deeper waters is the development of floating platform systems. This thesis will present a general technical description of two concept designs for floating wind turbine systems, and make a preliminary evaluation of their performance in wind and waves. A new approach to computing the nonlinear wave excitation is also presented.
by Kwang Hyun Lee.
S.M.

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Giumelli, Matteo. "Wind Response of The New Svinesund Bridge." Thesis, KTH, Bro- och stålbyggnad, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-36800.

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Iannuzzi, A. "Response of guyed masts to simulated wind." Thesis, University of Westminster, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378340.

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Singh, A. K. "Geomagnetic response of solar wind-magnetosphere coupling." Thesis, Indian Institute of Geomagnetism, Mumbai, 2012. http://localhost:8080/xmlui/handle/123456789/213.

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A thesis submitted to the university of Mumbai for the Ph. D.(Science) degree in Physics under the guidance of Prof. B.M.Pathan.
A brief summary of the important new findings is given below: • The data adaptive filtering technique singular spectrum analysis identifies and extracts trend and period modes of around 27-day, 13-day and 9-day in various solar wind and geomagnetic parameters. The response of the magnetosphere to the solar wind forcing is found to be the most prominent during the declining phases of the solar cycles. However, oscillations of these modes have considerable amplitudes during the entire sunspot cycle.Multi-frequency structures in substorm associated magnetic fluctuations are extracted by the SSA. The study throws light on several features of various modes thus detected, for example, poleward propagation of modes at high latitudes, dip equatorial enhancement. • Geomagnetic substorms, which may have considerably high magnetic disturbance (up to ∼-500 nT) at stations poleward of standard auroral oval, are occasionally missed out in the standard AE indices. However, their low latitude signatures like positive bays, Pi2 bursts are often evident. Signature and strength of such substorms have significant asymmetry in the opposite hemispheres. • This study clearly brings out 24-hour periodicity in the ring current asymmetry during magnetic storms. The asymmetry is observed maximum near dusk hours, whereas it is minimum near dawn hours. This periodicity is attributed to changing local time due to rotation of the Earth. For the first time, we also report clear westward and eastward propagating modes around the globe using ground-based magnetic data. These propagation characteristics are associated with the westward and eastward drifts of energetic ions and electrons, respectively in the ring current region. • This thesis reports various new aspects of substorm associated auroral and low latitude indices. (1) The AU index (supposedly positive), which is expected to represent the maximum intensity of the eastward electrojet during a substorm, turns negative under the conditions when entire auroral oval is dominated by westward electrojet. Such negative AU values result in underestimation of strength of substorm in the AE index (AE = AU − AL). Our study supports the finding of Kamide and Ros toker [2004] that use of AE index should be avoided for identification of a substorm.Rather AL index gives better representation of substorms. (2) Intense and prolonged solar flares generate asymmetric magnetic field at low latitudes. This asymmetry significantly alters non-substorm and substorm time ASY indices. (3) Low latitude ASY indices, often used in relation to substorm activities, are affected by prompt penetration of interplanetary electric field to lower latitudes.

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Gavhed, Désirée. "Human responses to cold and wind /." Stockholm, 2003. http://diss.kib.ki.se/2003/91-7045-669-0/.

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Konstantinou, Nikolaos. "Ocean mixed layer response to gap wind scenarios." Thesis, Monterey, Calif. : Naval Postgraduate School, 2006. http://bosun.nps.edu/uhtbin/hyperion.exe/06Dec%5FKonstantinou.pdf.

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Thesis (M.S. in Meteorology)--Naval Postgraduate School, December 2006.
Thesis Advisor(s): Qing Wang, Roland W. Garwood. "December 2006." Includes bibliographical references (p. 61-62). Also available in print.

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Li, Yu. "Dynamic Response Analysis of an Offshore Wind Turbine." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-15786.

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The offshore wind power is an attractive renewable energy resource. To improve the wind power generation capacity, there is a strong desire for offshore wind turbine to go to deep waters. For offshore fixed wind turbine, stronger foundation like jacket structure has a good applicability for deeper water depth. A 70-meters jacket substructure for offshore wind turbine is designed. This thesis focuses on the dynamic structural response analysis of this jacket substructure, with a particular focus on hot spot stress of critical points on tubular joints. Three types of models are applied for analyses in this thesis. For eigen-value analysis the entire modal including the wind turbine, tubular tower and jacket supporting structure is used in the program USFOS-VPOne. For hydrodynamic analysis the refined substructure model with complete jacket structure and tubular tower is applied in USFOS. The equivalent monopile model is constructed in HAWC2 to predict wind loads. Eigen value analysis is performed to check the validity of decoupled method for dynamic response analysis. The first eigen period is about 2.9s, far less than the main wave input periods, which implies the wave loads are mainly quasi-static, therefore the simplified decoupled analysis method can be applied. The global modes, the blade modes and the modes related to jacket braces are identified. Hydrodynamic analysis is performed to compare wave loads with different regular wave theories, including: Extrapolated Airy theory, Stretched Wave theory, Stoke’s 5th order wave theory and Stream Function theory. It is proved that for extreme wave conditions, higher order wave theories such as Stoke’s 5thorder wave theory and Stream Function theory should be applied since linear wave theories will under-estimate the structural reactions. Dynamic structural response analysis is performed in time domain with decoupled analysis method. The effect of misalignment of wind and wave on hot spot stress at joints is studied. It is observed that wave propagation directions has more significant effects on structural response than wind directions, while wind force has more significant influence on dynamic structural response rather than wave forces no matter in which directions they are propagating.

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Книги з теми "WIND RESPONCE"

Hay, Jim. Response of bridges to wind. London: HMSO, 1992.

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Transport Research Laboratory (Great Britain), ed. Response of bridges to wind. London: HMSO, 1992.

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United States. National Aeronautics and Space Administration., ed. Termination shock response to large-scale solar wind fluctuations. [Washington, D.C: National Aeronautics and Space Administration, 1994.

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Thompson, Edward F. Wave response of Kahului Harbor, Maui, Hawaii. Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 1996.

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American Society of Civil Engineers. Wind Effects Committee., ed. Wind loading and wind-induced structural response: A state-of-the-art report. New York, N.Y: American Society of Civil Engineers, 1987.

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C, Stanton Alan, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Program., eds. Nonintrusive fast response oxygen monitoring system for high temperature flows. [Washington, D.C.]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1993.

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Baumeister, Kenneth J. Reverberation effects on directionality and response of stationary monopole and dipole sources in a wind tunnel. [Cleveland, Ohio: National Aeronautics and Space Administration, Lewis Research Center, 1985.

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Center, Langley Research, ed. Dynamic response characteristics of two transport models: Tested in the National Transonic Facility. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1993.

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Whitney, Claudia S. Modeling the tropical ocean response to westerly wind forcing. Monterey, Calif: Naval Postgraduate School, 1992.

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Частини книг з теми "WIND RESPONCE"

Rauh, Alexander, Edgar Anahua, Stephan Barth, and Joachim Peinke. "Phenomenological Response Theory to Predict Power Output." In Wind Energy, 153–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-33866-6_27.

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Bargatze, L. F., D. N. Baker, and R. L. McPherron. "Magnetospheric Response to Solar Wind Variations." In Solar Wind — Magnetosphere Coupling, 93–100. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4722-1_6.

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Davenport, A. G. "The Response of Slender Structures to Wind." In Wind Climate in Cities, 209–39. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-017-3686-2_10.

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Strømmen, Einar N. "Wind Induced Dynamic Response Calculations." In Springer Series in Solid and Structural Mechanics, 295–353. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-01802-7_8.

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Strømmen, Einar N. "Wind-Induced Dynamic Response Calculations." In Engineering Dynamics and Vibrations, 152–86. Boca Raton, FL : Taylor & Francis Group, [2018] | “A Science Publishers Book.”: CRC Press, 2018. http://dx.doi.org/10.1201/9781315119908-5.

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Kareem, Ahsan, Enrica Bernardini, and Seymour M. J. Spence. "Control of the Wind Induced Response of Structures." In Advanced Structural Wind Engineering, 377–410. Tokyo: Springer Japan, 2013. http://dx.doi.org/10.1007/978-4-431-54337-4_14.

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Holmes, John D., and Seifu A. Bekele. "Resonant dynamic response and effective static load distributions." In Wind Loading of Structures, 155–95. Fourth edition. | Boca Raton : CRC Press, 2021. |: CRC Press, 2020. http://dx.doi.org/10.1201/9780429296123-5.

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Niemann, H. J. "Wind-Induced Response of Buildings Arranged in a Group." In Wind Climate in Cities, 275–92. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-017-3686-2_13.

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Price, Eric, Yu Tang Liu, Michael J. Black, and Aamir Ahmad. "Simulation and Control of Deformable Autonomous Airships in Turbulent Wind." In Lecture Notes in Networks and Systems, 608–26. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-95892-3_46.

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Abstract Fixed wing and multirotor UAVs are common in the field of robotics. Solutions for simulation and control of these vehicles are ubiquitous. This is not the case for airships, a simulation of which needs to address unique properties, i) dynamic deformation in response to aerodynamic and control forces, ii) high susceptibility to wind and turbulence at low airspeed, iii) high variability in airship designs regarding placement, direction and vectoring of thrusters and control surfaces. We present a flexible framework for modeling, simulation and control of airships. It is based on Robot operating system (ROS), simulation environment (Gazebo) and commercial off the shelf (COTS) electronics, all of which are open source. Based on simulated wind and deformation, we predict substantial effects on controllability which are verified in real-world flight experiments. All our code is shared as open source, for the benefit of the community and to facilitate lighter-than-air vehicle (LTAV) research. (Source code: https://github.com/robot-perception-group/airship_simulation.)

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Chortis, Dimitrios I. "Nonlinear Dynamic Response of Composite Plate-Beams." In Research Topics in Wind Energy, 103–50. Heidelberg: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00864-6_5.

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Тези доповідей конференцій з теми "WIND RESPONCE"

Cao, Qun, Longfei Xiao, Xiaoxian Guo, and Mingyue Liu. "Second-Order Responses of a 10 MW Floating Wind Turbine, Considering the Full QTF." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95661.

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Abstract Second-order components of wave loads acting on the floating foundation for wind turbines may induce severe resonance and lead to fatigue damage at natural frequencies of structures. In this study, the INNWIND.EU Triple-Spar and the DTU 10 MW Reference Wind Turbine were simulated by utilizing software FAST to obtain the second-order responses of the floating wind turbine under selected steady winds with collinear random waves. Low-frequency responses at surge and pitch natural frequencies dominated the response spectra, which were underestimated by the first-order numerical model. A response peak appeared in tower-top motion spectrum in vicinity of the first-order fore-aft vibration frequency of the tower when the sum-frequency wave effects were considered. The second-order high-frequency responses arose when the full QTF was utilized, compared to results with Newman approximation. Different operating conditions with varying wind speeds, wave periods, significant wave heights and wave directions were selected to conduct the sensitivity study of the second-order responses.

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Long, Robert R., and Edward B. White. "Experiments on Dynamic Aeroelastic Response of Wind Turbine Blades." In 35th Wind Energy Symposium. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2017. http://dx.doi.org/10.2514/6.2017-0451.

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Chen, Jiaxing, Zhiyong Su, Yu Ding, Allen Liu, and Arun Duggal. "Motion and Tension Response Study of a 15MW Offshore Reference Floating Wind Turbine With a Semisubmersible." In ASME 2022 4th International Offshore Wind Technical Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/iowtc2022-97385.

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Abstract A comprehensive study has been carried out to understand the system motion and mooring tension response under various environmental conditions for the 15MW offshore reference wind turbine. The publicly available data of IEA 15MW offshore reference wind turbine and the UMaine VolturnUS-S reference semisubmersible platform and its associated chain catenary mooring system are used for this study. The simulations are run in the time domain using OrcaFlex for a coupled aero-servo-hydro model. To simulate the stochastic turbulent wind as observed in the real world, wind fields are generated by TurbSim and imported into OrcaFlex. The simulations account for various environmental conditions which include individual and combined wind, waves, and current. Response statistics are summarized to study the impact of individual environmental component on the system responses. Furthermore, the responses are also inspected in the frequency domain. It can be shown that the responses under a general combined wind, waves, current condition can be decomposed into the responses in three frequency regions (low frequency, wave frequency, and high frequency). Each region is dominated by either a specific (or up to two) environmental component(s) or the resonant responses of the superstructure (tower and turbine). A further investigation also reveals that, in operational conditions, the high-frequency motions from the superstructure could contribute significantly to the tension response of the mooring line. Given the large number of cycles and amplitudes of this response, severe fatigue damage could be accumulated in a short time and leads to premature mooring failure. The underlying physics of this high-frequency tension response is examined, and a possible solution is proposed to mitigate the issue.

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Malcolm, D. "Modal response of 3-bladed wind turbines." In 2002 ASME Wind Energy Symposium. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-47.

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Malcolm, David J. "Modal Response of 3-Bladed Wind Turbines." In ASME 2002 Wind Energy Symposium. ASMEDC, 2002. http://dx.doi.org/10.1115/wind2002-47.

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A set of linear equations describing the motion of an operating 3-bladed HAWT are obtained from the dynamic characteristics of the stationary turbine by adding rotating frame effects. The approach makes use of the Coleman multi-blade transformation to present all results relative to the fixed frame. The formulation is in terms of a selected number of stationary, real, mode shapes. The formulation is applied to the expression of both the aerodynamic loading and the displacement response in terms of the operating mode shapes. This technique is applied to the conditions of vertical wind shear and off-yaw operation of a hypothetical 46-m wind turbine. The principal objective of the paper is to enable the characteristic of the inflow to be related to the nature of the response. A second objective is to illustrate a method of extracting linearized models from general aeroelastic codes such as ADAMS™.

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Nikoueeyan, Pourya, John A. Strike, Andrew S. Magstadt, Michael Hind, and Jonathan W. Naughton. "Aerodynamic Response of a Wind Turbine Airfoil to Gurney Flap Deployment." In 33rd Wind Energy Symposium. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-0995.

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Suleman, Afzal, Curran A. Crawford, and António P. Costa. "Wind-Tunnel Determination of Aeroelastic Response of Piezoelectric and Aileron Controlled 3-D Wing." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1711.

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Abstract This paper presents the results of wind tunnel testing performed on a true three dimensional adaptive wing structure. The focus of this study was to test the aeroelastic response and control of a wing built with conventional stressed skins. The aeroelastic performance of the wing using traditional aerodynamic surface control methods is compared to the results obtained using piezoelectric actuators on the skins of the wing. Results are presented for the system identification, free stream vibration and buffeting tests performed in the wind tunnel. The design of the adaptive wing and control interface is discussed in addition to the experimental setup.

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Schreck, S., M. Robinson, M. Hand, and D. Simms. "HAWT dynamic stall response asymmetries under yawed flow conditions." In 2000 ASME Wind Energy Symposium. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2000. http://dx.doi.org/10.2514/6.2000-40.

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McNiff, Brian, Niels LaWhite, and Eduard Muljadi. "Characterizing wind turbine system response to lightning activity - Preliminary results." In 1998 ASME Wind Energy Symposium. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1998. http://dx.doi.org/10.2514/6.1998-39.

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Schreck, S., and M. Robinson. "Rotational augmentation of horizontal axis wind turbine blade aerodynamic response." In 2002 ASME Wind Energy Symposium. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-29.

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Звіти організацій з теми "WIND RESPONCE"

Smith, Robert L., and P. M. Kosro. Gulf of Tehuantepec Wind-Jet Response. Fort Belvoir, VA: Defense Technical Information Center, January 1990. http://dx.doi.org/10.21236/ada246636.

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Connell, J. R., and R. L. George. Using a new characterization of turbulent wind for accurate correlation of wind turbine response with wind speed. Office of Scientific and Technical Information (OSTI), September 1987. http://dx.doi.org/10.2172/6060322.

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Wiser, Ryan, and Mark Bolinger. Renewable Energy RFPs: Solicitation Response and Wind ContractPrices. Office of Scientific and Technical Information (OSTI), April 2005. http://dx.doi.org/10.2172/860793.

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Hebert, Dave. Response of the Oceanic Boundary Layer to Wind Forcing. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada627817.

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Oakey, Neil S. Horizontal Variability in Surface Mixing in Response to Wind Forcing. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada629422.

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Snow, A. L., C. F. Heberling, II, and L. E. Van Bibber. The dynamic response of a Westinghouse 600-kW wind turbine. Office of Scientific and Technical Information (OSTI), March 1989. http://dx.doi.org/10.2172/5854853.

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Wilson, D., Michael Shaw, Vladimir Ostashev, Michael Muhlestein, Ross Alter, Michelle Swearingen, and Sarah McComas. Numerical modeling of mesoscale infrasound propagation in the Arctic. Engineer Research and Development Center (U.S.), October 2022. http://dx.doi.org/10.21079/11681/45788.

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The impacts of characteristic weather events and seasonal patterns on infrasound propagation in the Arctic region are simulated numerically. The methodology utilizes wide-angle parabolic equation methods for a windy atmosphere with inputs provided by radiosonde observations and a high-resolution reanalysis of Arctic weather. The calculations involve horizontal distances up to 200 km for which interactions with the troposphere and lower stratosphere dominate. Among the events examined are two sudden stratospheric warmings, which are found to weaken upward refraction by temperature gradients while creating strongly asymmetric refraction from disturbances to the circumpolar winds. Also examined are polar low events, which are found to enhance negative temperature gradients in the troposphere and thus lead to strong upward refraction. Smaller-scale and topographically driven phenomena, such as low-level jets, katabatic winds, and surface-based temperature inversions, are found to create frequent surface-based ducting out to 100 km. The simulations suggest that horizontal variations in the atmospheric profiles, in response to changing topography and surface property transitions, such as ice boundaries, play an important role in the propagation.

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Naughton, Brian Thomas, Robert Preus, Tony Jimenez, Brad Whipple, and Jake Gentle. Market Opportunities for Deployable Wind Systems for Defense and Disaster Response. Office of Scientific and Technical Information (OSTI), February 2020. http://dx.doi.org/10.2172/1634278.

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Naughton, Brian. Deployable Wind-Hybrid Power Systems for Defense and Disaster Response Applications. Office of Scientific and Technical Information (OSTI), November 2021. http://dx.doi.org/10.2172/1832973.

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Prowell, I., A. Elgamal, H. Romanowitz, J. E. Duggan, and J. Jonkman. Earthquake Response Modeling for a Parked and Operating Megawatt-Scale Wind Turbine. Office of Scientific and Technical Information (OSTI), October 2010. http://dx.doi.org/10.2172/992345.

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