Academic literature on the topic 'Green's Lag Entrainment Method'

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Journal articles on the topic "Green's Lag Entrainment Method"

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KIM, JONG-YUN, KYUNG-SEOK KIM, SEUNG-JUN LEE, and IN LEE. "TRANSONIC AEROELASTIC ANALYSIS OF AIRCRAFT WINGS CONSIDERING THE BOUNDARY-LAYER EFFECTS." Modern Physics Letters B 23, no. 03 (2009): 473–76. http://dx.doi.org/10.1142/s0217984909018680.

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Aerodynamic solver using the transonic small-disturbance (TSD) equation has frequently been used to perform practical aeroelastic analysis for many aircraft models. In the present study, the more accurate aeroelastic analysis solver using the TSD equation was developed by considering the viscous effects of the boundary-layer. The viscous effects were considered using Green's lag-entrainment equations and an inverse boundary-layer method. Through aerodynamic analyses for several aircraft wings, the viscous-inviscid interaction approach could improve the accuracy of the aerodynamic computation u
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Yavuz, Tahir, and Serpil Özkiliç. "Prediction of the turbulent boundary layer development by the lag-entrainment method." International Journal for Numerical Methods in Fluids 15, no. 6 (1992): 673–91. http://dx.doi.org/10.1002/fld.1650150604.

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Gopinathan, Sreenath M., Dmytro Iurashev, Alessandra Bigongiari, and Maria Heckl. "Nonlinear analytical flame models with amplitude-dependent time-lag distributions." International Journal of Spray and Combustion Dynamics 10, no. 4 (2017): 264–76. http://dx.doi.org/10.1177/1756827717728056.

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In the present work, we formulate a new method to represent a given Flame Describing Function by analytical expressions. The underlying idea is motivated by the observation that different types of perturbations in a burner travel with different speeds and that the arrival of a perturbation at the flame is spread out over time. We develop an analytical model for the Flame Describing Function, which consists of a superposition of several Gaussians, each characterised by three amplitude-dependent quantities: central time-lag, peak value and standard deviation. These quantities are treated as fitt
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Erkens, Jules, Michael Schulte, Matthias Vormann, and Christoph S. Herrmann. "Lacking Effects of Envelope Transcranial Alternating Current Stimulation Indicate the Need to Revise Envelope Transcranial Alternating Current Stimulation Methods." Neuroscience Insights 15 (January 2020): 263310552093662. http://dx.doi.org/10.1177/2633105520936623.

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In recent years, several studies have reported beneficial effects of transcranial alternating current stimulation (tACS) in experiments regarding sound and speech perception. A new development in this field is envelope-tACS: The goal of this method is to improve cortical entrainment to the speech signal by stimulating with a waveform based on the speech envelope. One challenge of this stimulation method is timing; the electrical stimulation needs to be phase-aligned with the naturally occurring cortical entrainment to the auditory stimuli. Due to individual differences in anatomy and processin
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Li, Na, Xueming Zhu, Hui Wang, Shouwen Zhang, and Xidong Wang. "Intraseasonal and interannual variability of sea temperature in the Arabian Sea Warm Pool." Ocean Science 19, no. 5 (2023): 1437–51. http://dx.doi.org/10.5194/os-19-1437-2023.

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Abstract. The Arabian Sea Warm Pool (ASWP) is a part of the Indian Ocean Warm Pool, formed in the Arabian Sea before the onset of the Indian summer monsoon. The ASWP has a significant impact on climate change in the Indian Peninsula and globally. In this study, we examined the intraseasonal and interannual variability of sea temperature in the ASWP using the latest Simple Ocean Data Assimilation (SODA) reanalysis dataset. We quantified the contributions of sea surface heat flux forcing, horizontal advection, and vertical entrainment to the sea temperature using the mixed-layer heat budget anal
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Masuda, Kosaku, Tatsuya Yamada, Yuya Kagawa, and Hirokazu Fukuda. "Time Lag Between Light and Heat Diurnal Cycles Modulates CIRCADIAN CLOCK ASSOCIATION 1 Rhythm and Growth in Arabidopsis thaliana." Frontiers in Plant Science 11 (February 11, 2021). http://dx.doi.org/10.3389/fpls.2020.614360.

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Plant growth responses to cues such as light, temperature, and humidity enable the entrainment of the circadian rhythms with diurnal cycles. For example, the temperature variations between day and night affect plant growth and accompany the time lag to light cycle. Despite its importance, there has been no systematic investigation into time lags, and the mechanisms behind the entrainment of the circadian rhythms with multiple cycles remain unknown. Here, we investigated systemically the effects of the time lag on the circadian rhythm and growth in Arabidopsis thaliana. To investigate the entra
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Masuda, Kosaku, Tatsuya Yamada, Yuya Kagawa, and Hirokazu Fukuda. "Application of time lags between light and temperature cycles for growth control based on the circadian clock of Lactuca sativa L. seedlings." Frontiers in Plant Science 13 (October 13, 2022). http://dx.doi.org/10.3389/fpls.2022.994555.

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The circadian clock plays an important role in agriculture, especially in highly controlled environments, such as plant factories. However, multiple environmental factors have an extremely high degree of freedom, and it is difficult to experimentally search for the optimal design conditions. A recent study demonstrated that the effect of time lags between light and temperature cycles on plant growth could be predicted by the entrainment properties of the circadian clock in Arabidopsis thaliana. Based on this prediction, it was possible to control plant growth by adjusting the time lag. However
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Ma, Changxiao, Haonan Li, Bingyi Shen, et al. "Differential Effects of Light and Dark Phase Modifications on Jet Lag Adaptability in Mice." Journal of Pineal Research 76, no. 7 (2024). http://dx.doi.org/10.1111/jpi.13010.

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ABSTRACTIn chronobiology, shifting light/dark cycles is a common method to disrupt circadian rhythms. While the direction and magnitude of a phase shift (e.g., +6 denoting a 6‐h advanced shift) dictate the temporal change before and after the shift, little attention has been paid to the duration and relative proportion of daytime and nighttime during the shift, leading to a critical, unexamined variable in circadian research. In this study, we introduce the concepts of “L‐shift” (longer light phase on the shift day) and “D‐shift” (longer dark phase), and investigate how these variations impact
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Dissertations / Theses on the topic "Green's Lag Entrainment Method"

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Bhanderi, Harish Shantilal. "Lag-entrainment method in the case of transonic shock/boundary layer interactions." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614132.

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Sai, Kiran Ramarapu. "Numerical Study of Accelerating Turbulent Boundary Layers." Thesis, 2022. https://etd.iisc.ac.in/handle/2005/5932.

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This thesis focuses on the prediction of favourable pressure gradient turbulent boundary layer flows. Particularly, the focus is on mild favourable pressure gradient turbulent boundary layers and relaminarising turbulent boundary layers (where the favourable pressure gradient is relatively large.) The calculations were performed on ANSYS FLUENT software, and the turbulence models used are the Spalart-Allamaras model and k-ω ​SST model. Furthermore, an integral method called Green's Lag Entrainment method is also used, which was originally designed for the prediction of turbulent flows. A
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Conference papers on the topic "Green's Lag Entrainment Method"

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Bhanderi, Harish, and Holger Babinsky. "Improving the Lag Entrainment Method in the Case of Transonic Shock Wave/Boundary Layer Interaction." In 34th AIAA Fluid Dynamics Conference and Exhibit. American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-2147.

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Gostelow, J. P., G. Hong, G. J. Walker, and J. Dey. "Modeling of Boundary Layer Transition in Turbulent Flows by Linear Combination Integral Method." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-358.

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Transitional boundary layer parameters in zero and variable pressure gradient flows, typical of turbomachinery applications, are predicted using an integral method of the linear combination type. The code used is that of Dey and Narasimha and the turbulent layer is calculated by a lag-entrainment method. The predictions of test data represent an improvement upon earlier methods; although reasonable agreement is obtained for these low Reynolds number test cases further refinement of predictive correlations to account for free-stream turbulence effects on laminar boundary layers and transition i
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Hirschmann, A., M. Casey, and M. Montgomery. "A Zonal Calculation Method for Axial Gas Turbine Diffusers." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94117.

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The axial exhaust downstream of a gas turbine in a combined cycle plant includes an annular diffuser with struts and a closed hub carrying the turbine rotor bearing. Flow separation occurs at the blunt end of the hub and can also occur on the casing wall and on the struts. A zonal method for the computation of the flow in such diffusers is described. A throughflow code is used for the axisymmetric core flow, a lag-entrainment-integral-method for the blockage of the boundary layers and the wake of the hub. For cases with separated flow a semi-inverse procedure for the coupling is needed. Additi
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Nigim, Hani H., Hide S. Koyama, and Kohta Shiino. "Active Control of the Profile Drag of Two-Dimensional Cylinders." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33589.

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The control of profile drag on a circular cylinder was studied experimentally at Reynolds numbers, ranging from 160 to 400, using an acoustic active control system. The investigation has been carried by, quantitatively, hot-wire to measure the mean and fluctuating velocities and, qualitatively, by using smoke-wire flow visualization technique to examine the formation of the flow field down-stream of the cylinder. The present active control method is able to influence the rate of entrainment from main flow into the wake flow. When the Reynolds number is relatively small, it is the size of the c
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Nigim, Hani H., Kohta Shiino, Hide S. Koyama, and Hyung Jin Sung. "A Study of Active Control of Vortex Shedding and Wake From a Cylinder." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31043.

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The control of vortex shedding and wake from a circular cylinder was studied experimentally at Reynolds numbers, ranging from 160 to 400, using an acoustic active control system. The investigation has been carried by, quantitatively, hot-wire to measure the mean and fluctuating velocities and, qualitatively, by using smoke-wire flow visualization technique to examine the formation of the flow field downstream of the cylinder. The present active control method is able to influence the rate of entrainment from main flow into the wake flow. When the Reynolds number is relatively small, it is the
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