Gotowe bibliografie tematyczne / Boundary heat flux

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Gotowa bibliografia na temat „Boundary heat flux”

Autor: Grafiati
Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Boundary heat flux"

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Huang, Weichao, Jiahao Li, and Ding Liu. "Research on Unsteady Inverse Heat Conduction Based on Dynamic Matrix Control." Energies 16, no. 11 (2023): 4420. http://dx.doi.org/10.3390/en16114420.

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For the unsteady multi-boundary inverse heat conduction problem, a real-time solution method for boundary heat flux based on dynamic matrix control is proposed in the paper. The method solves the heat flux at the boundary in real-time by measuring the temperature information at the measurement points of the heat transfer system. A two-dimensional direct heat conduction model of the heat transfer system is established in the paper, and is solved by the finite difference method to obtain the temperature information of the measurement points under any heat flux boundary. Then, the correspondence
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Miao, Wenbo, Xiaoli Cheng, Bangcheng Ai, and Yonghui Dong. "Surface Slip Effect on Thermal Environment of Hypersonic Non-Equilibrium Flows." International Journal of Computational Methods 12, no. 04 (2015): 1540008. http://dx.doi.org/10.1142/s0219876215400083.

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Boundary slip effect caused by low gas density has an important influence on the thermal environment of the vehicles. Numerical studies on the boundary slip effect and accommodation for moment and energy have been carried out in this paper. The simulations considering slip boundary and surface catalysis are validated with Arc-jet test data. Mechanism and rules of impact on surface heat flux by different boundary slip level (Knudsen number from 0.0028 to 0.05) has been investigated in typical hypersonic flow conditions. The results show that mechanisms of boundary slip effect on mass diffusion
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Wang, Fu Qiang. "Ray-Thermal Sequential Coupled Heat Transfer ANALYSIS of Porous Media Receiver for Solar Dish Collector." Applied Mechanics and Materials 442 (October 2013): 169–75. http://dx.doi.org/10.4028/www.scientific.net/amm.442.169.

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For the sake of reflecting the concentrated heat flux distribution boundary condition as genuine as possible during simulation, the sequential coupled optical-thermal heat transfer analysis is introduced for porous media receiver. During the sequential coupled numerical analysis, the non-uniform heat flux distribution on the fluid entrance surface of porous media receiver is obtained by Monte-Carlo ray tracing method. Finite element method (FEM) is adopted to solve energy equation using the calculated heat flux distribution as the third boundary condition. The dimensionless temperature distrib
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Wen, Jun, and M. M. Khonsari. "Analytical Formulation for the Temperature Profile by Duhamel’s Theorem in Bodies Subjected to an Oscillatory Heat Source." Journal of Heat Transfer 129, no. 2 (2005): 236–40. http://dx.doi.org/10.1115/1.2424236.

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An analytical technique is presented for treating heat conduction problems involving a body experiencing oscillating heat flux on its boundary. The boundary heat flux is treated as a combination of many point heat sources, each of which emits heat intermittently based on the motion of the flux. The working function of the intermittent heat source with respect to time is evaluated by using the Fourier series and temperature profile of each point heat source is derived by using the Duhamel’s theorem. Finally, by superposition of the temperature fields over all the point heat sources, the tempera
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Alghamdi, A. "Inverse Estimation of Boundary Heat Flux for Heat Conduction Model." Journal of King Abdulaziz University-Engineering Sciences 21, no. 1 (2010): 73–95. http://dx.doi.org/10.4197/eng.21-1.5.

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Taylor, Robert P., Philip H. Love, Hugh W. Coleman, and M. H. Hosni. "Step heat flux effects on turbulent boundary-layer heat transfer." Journal of Thermophysics and Heat Transfer 4, no. 1 (1990): 121–23. http://dx.doi.org/10.2514/3.29175.

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Dewar, W. K., and R. X. Huang. "Fluid flow in loops driven by freshwater and heat fluxes." Journal of Fluid Mechanics 297 (August 25, 1995): 153–91. http://dx.doi.org/10.1017/s0022112095003041.

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Thermohaline convection in a salt water loop is discussed. Fluid temperature is affected by relaxation on the loop surface and fluid salinity by a freshwater flux through the loop surface. In addition, other boundary conditions on salinity, such as the equivalent virtual salt flux or salinity relaxation condition, are examined and the dynamic role of diffusion in thermohaline convection is analysed.Both analytical and numerical analyses indicate that the system behaviour depends sensitively on the nature of the salinity boundary condition. For the saline-only loop model, analysis indicates tha
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Voglar, Jure. "Physical Model of a Single Bubble Growth during Nucleate Pool Boiling." Fluids 7, no. 3 (2022): 90. http://dx.doi.org/10.3390/fluids7030090.

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A simplified physical model of a single bubble growth during nucleate pool boiling was developed. The model was able to correlate the experimentally observed data of the bubble’s growth time and its radius evolution with the use of the appropriate input parameters. The calculated values of separated heat fluxes from the heater wall, thermal boundary layer, and to the bulk liquid gave us a new insight into the complex mechanisms of the nucleate pool boiling process. The thermal boundary layer was found to supply the majority of the heat to the growing bubble. The heat flux from the thermal boun
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Ji, Xuan, Nora Bailey, Daniel Fabrycky, Edwin S. Kite, Jonathan H. Jiang, and Dorian S. Abbot. "Inner Habitable Zone Boundary for Eccentric Exoplanets." Astrophysical Journal Letters 943, no. 1 (2023): L1. http://dx.doi.org/10.3847/2041-8213/acaf62.

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Abstract The climate of a planet can be strongly affected by its eccentricity due to variations in the stellar flux. There are two limits for the dependence of the inner habitable zone boundary (IHZ) on eccentricity: (1) the mean stellar flux approximation ( S IHZ ∝ 1 − e 2 ), in which the temperature is approximately constant throughout the orbit, and (2) the maximum stellar flux approximation (S IHZ ∝ (1 − e)2), in which the temperature adjusts instantaneously to the stellar flux. Which limit is appropriate is determined by the dimensionless parameter Π = C BP , where C is the heat capacity
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Juliano, Thomas J., Jonathan Poggie, Kevin M. Porter, Roger L. Kimmel, Joseph S. Jewell, and David W. Adamczak. "HIFIRE-5b Heat Flux and Boundary-Layer Transition." Journal of Spacecraft and Rockets 55, no. 6 (2018): 1315–28. http://dx.doi.org/10.2514/1.a34147.

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Rozprawy doktorskie na temat "Boundary heat flux"

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Vega, Thomas. "Quantification of the Fire Thermal Boundary Condition." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/78052.

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The thermal boundary condition to a fire exposed surface was quantified with a hybrid heat flux gage. Methods were developed to determine the net heat flux through the gage, incident heat flux, cold surface heat flux, convective heat transfer coefficient, adiabatic surface temperature, and the separated components of radiative and convective heat flux. Experiments were performed in a cone calorimeter with the hybrid gage flush mounted into UNIFRAX Duraboard LD ceramic board. The results were then compared to results obtained with a Schmidt-Boelter gage and a plate thermometer. The hybrid heat
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Kharche, Sanjay. "Stefan problems with two-dimensional, linearised perturbations in their boundary geometry or boundary conditions." Thesis, University of Hull, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327179.

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Schmid, Hans Peter Emil. "Spatial scales of sensible heat flux variability : representativeness of flux measurements and surface layer structure over suburban terrain." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/29385.

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The surface character of a suburban area is far from the uniform, smooth and flat planes over which current surface-layer theory is valid and where vertical eddy-fluxes can be assumed to be almost constant horizontally and vertically. The complexity of the surface introduces considerable variability into the atmosphere at small spatial scales. This variability is partly reduced and spatially-averaged by turbulent mixing but still leaves the concerns about the spatial representativeness of sensible heat flux measurements over a suburban area. The spatial scales of sensible heat flux variability
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Magee, Michael P. "Thermal boundary resistance in a high temperature thin-film superconductor under varying heat flux." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA326312.

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Thesis (M.S. in Mechanical Engineering) Naval Postgraduate School, December 1996.<br>"December 1996." Thesis advisor(s): Matthew Kelleher, Pat E. Phelan. Includes bibliographical references (p. 73-75). Also available online.
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Sahlée, Erik. "Fluxes of Sensible and Latent Heat and Carbon Dioxide in the Marine Atmospheric Boundary Layer." Doctoral thesis, Uppsala University, Department of Earth Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8184.

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<p>Oceans cover about 70% of the earth’s surface. They are the largest source of the atmospheric water vapour and act as enormous heat reservoirs. Thus in order to predict the future weather and climate it is of great importance to understand the processes governing the exchange of water vapour and heat between the ocean and atmosphere. This exchange is to a large extent mediated by turbulent eddies. Current numerical climate and weather forecast models are unable to resolve the turbulence, which means that the turbulent exchange needs to be simplified by using parameterizations. </p><p>Tower
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Lindgren, Kristina. "The Behaviour of the Latent Heat Exchange Coefficient in the Stable Marine Boundary Layer." Thesis, Uppsala University, Department of Earth Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9140.

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<p>Knowledge of the turbulent fluxes at the sea surface is important for understanding the interaction between atmosphere and ocean. With better knowledge, improvements in the estimation of the heat exchange coefficients can be made and hence models are able to predict the weather and future climate with higher accuracy.</p><p>The exchange coefficients of latent and sensible heat during stable stratification vary in the literature. Therefore it is necessary to investigate the processes influencing the air-sea exchange of water vapour and heat in order to estimate these values. With measurement
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Moosbrugger, John C. "Numerical computation of metal/mold boundary heat flux in sand castings using a finite element enthalpy model." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/16365.

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Brunner, Daniel Frederic. "Development of probes for assessment of ion heat transport and sheath heat flux in the boundary of the Alcator C-Mod Tokamak." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/86420.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2013.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis. Pages [228-229] blank.<br>Includes bibliographical references.<br>Progress towards a viable fusion reactor will require comprehensive understanding of boundary plasma physics. Knowledge in this area has been growing, yet there are critical gaps. Measurements of the sheath heat flux
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Nilsson, Erik. "Flux Attenuation due to Sensor Displacement over Sea." Thesis, Uppsala University, Department of Earth Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8024.

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<p>In this study the flux attenuation due to sensor displacement has been investigated over sea using an extensive set of data from the "Ocean Horizontal Array Turbulence Study". All previous investigations of the flux attenuation have been performed over land.</p><p>A function developed for correcting fluxes in the homogenous surface layer was compared to measured flux attenuation. This investigation revealed the possibility to find new functions describing the flux attenuation when measurements are carried out over sea. From the measured flux attenuation studied here a change in the form of
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Lammert, Andrea, and Armin Raabe. "Berechnung sensibler Wärmeströme mit der Surface Renewal Analysis und der Eddy - Korrelations - Methode." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-215495.

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Die Surface Renewal Analysis wurde zur Bestimmung sensibler Wärmeflußdichten im bodennahen Bereich der atmosphärischen Grenzschicht genutzt und mit der Eddy - Korrelations - Methode verglichen. Dazu wurden beide Berechnungsmethoden auf Temperatur - und Vertikalwinddaten angewandt, die unter Verwendung von Strukturfunktionen simuliert wurden. Zur Überprüfung der Resultate wurden über zwei verschiedenen Unterlagen (Wiese und Düne) hochfrequente Zeitreihen von Temperatur und Vertikalwind gemessen und mit der Surface Renewal Analysis und der Eddy - Korrelations - Methode analysiert<br>The Surface
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Książki na temat "Boundary heat flux"

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Zaman, K. B. M. O., Reshotko Eli, and United States. National Aeronautics and Space Administration., eds. Turbulent heat flux measurements in a transitional boundary layer. National Aeronautics and Space Administration, 1992.

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Zaman, K. B. M. Q., Reshotko E, and United States. National Aeronautics and Space Administration., eds. Turbulent heat flux measurements in a transitional boundary layer. National Aeronautics and Space Administration, 1992.

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Bradley, E. F. A guide to making climate quality meteorological and flux measurements at sea. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Office of Oceanic and Atmospheric Research, Earth System Research Laboratory, Physical Sciences Division, 2007.

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Bradley, E. F. A guide to making climate quality meteorological and flux measurements at sea. National Oceanic and Atmospheric Administration, Office of Oceanic and Atmospheric Research, Earth System Research Laboratory, Physical Sciences Division, 2006.

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Michels, Berenice I. Fluxes of heat and water vapour in a convective mixed layer during EFEDA. Deutsche Forschungsanstalt für Luft- und Raumfahrt, 1992.

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Jankovsky, Robert S. High-area-ratio rocket nozzle at high combustion chamber pressure--experimental and analytical validation. National Aeronautics and Space Administration, Glenn Research Center, 1999.

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D, Smith Timothy, Pavli Albert J, and NASA Glenn Research Center, eds. High-area-ratio rocket nozzle at high combustion chamber pressure--experimental and analytical validation. National Aeronautics and Space Administration, Glenn Research Center, 1999.

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D, Smith Timothy, Pavli Albert J, and NASA Glenn Research Center, eds. High-area-ratio rocket nozzle at high combustion chamber pressure--experimental and analytical validation. National Aeronautics and Space Administration, Glenn Research Center, 1999.

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D, Smith Timothy, Pavli Albert J, and NASA Glenn Research Center, eds. High-area-ratio rocket nozzle at high combustion chamber pressure--experimental and analytical validation. National Aeronautics and Space Administration, Glenn Research Center, 1999.

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Foken, Th. Turbulenter Energieaustausch zwischen Atmosphäre und Unterlage: Methoden, messtechnische Realisierung sowie ihre Grenzen und Anwendungsmöglichkeiten. Selbstverlag des Deutschen Wetterdienstes, 1990.

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Części książek na temat "Boundary heat flux"

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Burton, Ralph A. "Coupling of Waviness and Boundary Heat Flux in Reynolds Flow." In Heat, Bearings, and Lubrication. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1248-5_12.

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Desjardins, R. L., J. I. Macpherson, P. H. Schuepp, and F. Karanja. "An Evaluation of Aircraft Flux Measurements of CO2, Water Vapor and Sensible Heat." In Boundary Layer Studies and Applications. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0975-5_5.

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Amar, M., D. Andreucci, R. Gianni, and C. Timofte. "Homogenization of a Heat Conduction Problem with a Total Flux Boundary Condition." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-41057-5_119.

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Hasebe, Norio. "Thermal Stress for Mixed Heat Conduction Boundary Around an Arbitrarily Shaped Hole Under Uniform Heat Flux." In Encyclopedia of Thermal Stresses. Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-2739-7_117.

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Helmig, Thorsten, Hui Liu, Simon Winter, Thomas Bergs, and Reinhold Kneer. "Development of a Tool Temperature Simulation During Side Milling." In Lecture Notes in Production Engineering. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-34486-2_22.

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AbstractCurrent modeling approaches of cutting processes require on the one hand extensive numerical and analytical simulations and further an experienced user in the field of numerical simulations, which makes a large-scale application time-consuming to apply.Therefore, the goal is to implement existing models into an established side-milling simulation program aiming for a computationally fast and user-friendly simulation approach capable of predicting transient tool temperatures along the cutting edge. Aim of this work is the development of the thermal model, which can later be implemented into existing programs. The model process involves the following two major steps: First, a geometric engagement simulation of the milling process with a parameterizable tool geometry is performed. These results are used to form a database linking the specific cutting force components with the heat flux components. Second, a three-dimensional transient heat conduction model of the cutter is established, applying the calculated heat flux components as boundary conditions in the simulation. Finally, first results of the performed simulation are presented and evaluated, in particular to validate the work flow and user accessibility. Future studies will then focus on further parameter analysis and experimental validation.
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Vaka, Ananda S., Pedduri Jayakrishna, Saurav Chakraborty, Suvankar Ganguly, and Prabal Talukdar. "Application of Inverse Heat Transfer Technique in Thin Slab Continuous Casting for Estimating the Interfacial Boundary Heat Flux." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-7214-0_32.

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Ferdows, M., and Sakawat Hossain. "Local Non-similar Solution of Induced Magnetic Boundary Layer Flow with Radiative Heat Flux." In Flow and Transport in Subsurface Environment. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8773-8_12.

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Fuselier, S. A., W. C. Feldman, S. J. Bame, E. J. Smith, and F. L. Scarf. "Heat Flux Observations and the Location of The Transition Region Boundary of Giacobini-Zinner." In Special Publications. American Geophysical Union, 2013. http://dx.doi.org/10.1029/sp027p0165.

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Prajapati, Ravi, Viral Thakkar, Sanil Shah, and Ajit Kumar Parwani. "Estimation of Transient Boundary Heat Flux Using Modified JAYA Algorithm in Laminar Duct Flow." In Recent Advances in Mechanical Infrastructure. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4176-0_29.

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Sathavara, Parth, Ajit Kumar Parwani, Maulik Panchal, and Paritosh Chaudhuri. "Estimation of Boundary Heat Flux with Conjugate Gradient Method by Experimental Transient Temperature Data." In Recent Advances in Mechanical Infrastructure. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4176-0_30.

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Streszczenia konferencji na temat "Boundary heat flux"

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Juliano, Thomas J., Jonathan Poggie, Kevin Porter, Roger L. Kimmel, Joseph S. Jewell, and David Adamczak. "HIFiRE-5b Heat Flux and Boundary-Layer Transition." In 47th AIAA Fluid Dynamics Conference. American Institute of Aeronautics and Astronautics, 2017. http://dx.doi.org/10.2514/6.2017-3134.

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Saidi, Arash, and Jungho Kim. "Heat Flux Sensor With Minimal Impact on Boundary Conditions." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47567.

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A technique for determining the heat transfer on the far surface of a wall based on measuring the heat transfer and temperature on the near wall is presented. Although heat transfer measurements have previously been used to augment temperature measurements in inverse heat conduction methods, the sensors used alter the heat flow through the surface, disturbing the very quantity that is desired to be measured. The ideal sensor would not alter the boundary condition that would exist were the sensor not present. The innovation of this technique in that it has minimal impact on the wall boundary co
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Walsh, P. A., E. J. Walsh, and Y. S. Muzychka. "Laminar Slug Flow: Heat Transfer Characteristics With Constant Heat Flux Boundary." In ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/ht2009-88428.

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The problem of elevated heat flux in modern electronics has led to the development of numerous liquid cooling devices which yield superior heat transfer coefficients over their air based counterparts. This study investigates the use of liquid/gas slug flows where a liquid coolant is segregated into discrete slugs, resulting in a segmented flow, and heat transfer rates are enhanced by an internal circulation within slugs. This circulation directs cooler fluid from the center of the slug towards the heated surface and elevates the temperature difference at the wall. An experimental facility is b
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Wu, Zhijian, Jing Feng, Xueyan Zhang, and Aixia Zhou. "Study on Reconstruction of Heat Flux in Moving Boundary." In 2012 National Conference on Information Technology and Computer Science. Atlantis Press, 2012. http://dx.doi.org/10.2991/citcs.2012.203.

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Molavi, Hosein, Ali Hakkaki-Fard, Alireza Pourshaghaghy, Mehdi Molavi, and Ramin K. Rahmani. "Heat Flux Estimation in a Nonlinear Inverse Heat Conduction Problem With Moving Boundary." In ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/ht2009-88501.

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Estimation of heat flux in the nonlinear heat conduction problem becomes more challenging when the material at the boundary loses its mass due to phase change, chemical erosion, oxidation, or mechanical removal. In this paper, a new gradient-type method with adjoint problem is employed to predict the unknown time-varying heat flux at the receding surface in the nonlinear heat conduction problem. Particular features of this novel approach are discussed and examined. Results obtained by the new method for several test cases are benchmarked and analyzed using the numerical experiments with the si
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Park, Chul. "Radiative to Convective Heat Flux Conversion by Boundary Layer Absorption." In 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition. American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-1583.

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Breidenthal, R. E. "Wall Heat Flux Under Persistent Vortices." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31244.

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It is commonly perceived that turbulent flows yield turbulent wall fluxes, while laminar flows yield correspondingly laminar wall fluxes. Experiments support a recent theory that turbulent flows can yield laminar wall fluxes if the flow is “persistent.” Adding strong, stationary vortices to a turbulent boundary layer lowers the wall heat flux to a laminar value.
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Wang, Q. W., Q. W. He, X. N. Suo, and Y. N. Wu. "GASEOUS FLOW AND HEAT TRANSFER IN MICRO-CHANNEL WITH HEAT FLUX SPECIFIED BOUNDARY CONDITION." In Annals of the Assembly for International Heat Transfer Conference 13. Begell House Inc., 2006. http://dx.doi.org/10.1615/ihtc13.p14.130.

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Lee, Man, Luthur Siu Lun Cheung, Yi-Kuen Lee, and Yitshak Zohar. "Two-Phase Flow in Microchannel Heat Sink with Nearly Uniform Heat Flux Boundary Condition." In 2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems. IEEE, 2006. http://dx.doi.org/10.1109/nems.2006.334888.

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Lu, Wen-Qiang, and Qing-Mei Fan. "Non-Fourier Heat Conduction Phenomena Applied Different Temperature and Heat Flux Pulses on Boundary." In ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer. ASMEDC, 2008. http://dx.doi.org/10.1115/mnht2008-52287.

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A new numerical method [1], which combines the dual reciprocity boundary element method with Laplace transforms, has been used to solve ultrafast heat conduction problems. By this method, the time micro scale heat transfer problems applied different extreme high frequency temperature and heat flux pulses (the width of a single pulse is less than 10−12 s) on the boundary are simulated in this paper. Numerical results open out some phenomena of non-Fourier heat conduction. “Thermal accumulation (TA)” as a typical phenomenon of non-Fourier heat conduction takes on different characteristics under
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Raporty organizacyjne na temat "Boundary heat flux"

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Mahrt, Larry, and Jielun Sun. A New Heat Flux Formulation Based on Effective Surface Temperatures, With Extension to the Nocturnal Boundary Layer. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada369931.

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