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Keywords: natural convection
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Proceedings Papers

Proc. ASME. HT2021, ASME 2021 Heat Transfer Summer Conference, V001T06A001, June 16–18, 2021
Paper No: HT2021-62306
... in AC to DC power conversion and in switching Keywords: CFD, Natural Convection, Conjugate Heat applications. One of the most common applications of these Transfer, STAR CCM+ semiconductor devices is variable speed drive compressors. Variable speed drive compressors are used in a multitude...
Proceedings Papers

Proc. ASME. HT2020, ASME 2020 Heat Transfer Summer Conference, V001T09A004, July 13–15, 2020
Paper No: HT2020-9025
...MICRO-COMPUTED TOMOGRAPHY PORE-SCALE STUDY ON NATURAL CONVECTION IN A CUBIC CAVITY FILLED WITH COMPLEX POROUS MEDIUM Xu Wang1, Peng Li2, Anyi Xu2, Zhenyu Liu1,* 1Shanghai Jiao Tong University, Shanghai, China 2Shanghai Institute of Aerospace System Engineering, Shanghai, China ABSTRACT A pore-scale...
Proceedings Papers

Proc. ASME. HT2013, Volume 3: Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat Transfer in Electronic Equipment; Symposium in Honor of Professor Richard Goldstein; Symposium in Honor of Prof. Spalding; Symposium in Honor of Prof. Arthur E. Bergles, V003T21A005, July 14–19, 2013
Paper No: HT2013-17732
... Waals and the Peng-Robinson equations of state. Ideal gas Low Mach number micro-fluidics natural convection piston effect supercritical fluids 1 Copyright © 2013 by ASME A NOVEL NUMERICAL APPROACH FOR LOW MACH NUMBER APPLICATION TO SUPERCRITICAL FLUIDS Jalil Ouazzani1, 2 1Arcofluid Parc...
Proceedings Papers

Proc. ASME. HT2013, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Theory and Fundamental Research in Heat Transfer, V001T01A012, July 14–19, 2013
Paper No: HT2013-17090
... Nanofluids are colloidal suspensions of nano-scale particles in water, or other base fluids. In this paper, the effect of natural convection on laminar flow of nanofluids in a horizontal tube has been addressed. The obtained experimental data could not be reconciled with existing correlations...
Proceedings Papers

Proc. ASME. HT2012, Volume 2: Heat Transfer Enhancement for Practical Applications; Fire and Combustion; Multi-Phase Systems; Heat Transfer in Electronic Equipment; Low Temperature Heat Transfer; Computational Heat Transfer, 1129-1136, July 8–12, 2012
Paper No: HT2012-58589
... In this article a numerical simulation is employed to obtain dimensionless heat transfer in laminar natural convection condition for isothermal bodies which are similar to sphere and cylinder. Then, the numerical results for different bodies are compared with each other to figure out the effect...
Proceedings Papers

Proc. ASME. HT2009, Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer, 309-315, July 19–23, 2009
Paper No: HT2009-88478
... 14 06 2010 The current research utilizes disk-shaped thermistors to indirectly measure the convective heat transfer coefficient in the case of natural convection. Thermistors are resistors which have a resistance that is extremely temperature sensitive, so that experiments can be run...
Proceedings Papers

Proc. ASME. HT2009, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment, 981-988, July 19–23, 2009
Paper No: HT2009-88477
... 23 02 2010 A numerical study is carried out for natural convective flow and heat transfer in a two-dimensional enclosure with centrally located sinusoidal thin partition for a range of Rayleigh numbers, partition heights and aspect ratios. The partition is oriented parallel to the two...
Proceedings Papers

Proc. ASME. HT2009, Volume 3: Combustion, Fire and Reacting Flow; Heat Transfer in Multiphase Systems; Heat Transfer in Transport Phenomena in Manufacturing and Materials Processing; Heat and Mass Transfer in Biotechnology; Low Temperature Heat Transfer; Environmental Heat Transfer; Heat Transfer Education; Visualization of Heat Transfer, 897-905, July 19–23, 2009
Paper No: HT2009-88438
... 14 06 2010 The present study is an experimental and numerical analysis on the natural convection of air in square enclosures with partially active side walls. The experimental equipment is based on two different systems: an holographic interferometer and a 2D-PIV. The test cell...
Proceedings Papers

Proc. ASME. HT2009, Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer, 259-263, July 19–23, 2009
Paper No: HT2009-88382
... 14 06 2010 We consider the two-dimensional problem of steady natural convection in a circular cavity with periodic heat generation filled with viscous fluid subject to cosine temperature variation on the boundary. The solution is expanded for low Rayleigh number and extended to 16...
Proceedings Papers

Proc. ASME. HT2009, Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer, 421-428, July 19–23, 2009
Paper No: HT2009-88607
... 14 06 2010 Experimental investigations have been reported on steady state natural convection from the outer surface of vertical triangular cross section ducts in air. Three ducts have been used with equilateral side length of 0.044, 0.06 and 0.08 m. The ducts are heated using internal...
Proceedings Papers

Proc. ASME. HT2009, Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer, 883-888, July 19–23, 2009
Paper No: HT2009-88433
... 14 06 2010 Natural-convection flow in the presence of a magnetic field in an enclosure heated from bottom and cooled from top is considered. The fluid (molten sodium) properties are function of temperature. To solve the governing non-linear differential equations (mass, momentum...
Proceedings Papers

Proc. ASME. HT2009, Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer, 627-632, July 19–23, 2009
Paper No: HT2009-88085
... 14 06 2010 This work analyses the natural convective heat transfer from a horizontal circular cylinder with constant surface heat flux using radial equally spaced exterior low conductivity baffles. The dimensionless governing equations in the stream function–vorticity formulation were...
Proceedings Papers

Proc. ASME. HT2007, ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 3, 555-559, July 8–12, 2007
Paper No: HT2007-32866
.... In addition, boundary layer thickness appreas explicitly in the analysis, which again tends to yield more insight at the expense of some accuracy. heat transfer natural convection free convection cone Proceedings of HT2007 2007 ASME-JSME Thermal Engineering Summer Heat Transfer Conference July 8...
Proceedings Papers

Proc. ASME. HT2008, Heat Transfer: Volume 1, 159-165, August 10–14, 2008
Paper No: HT2008-56238
... their values for the case without baffle and this implies that a reduction in the heat transfer through the cavity occurs. Natural Convection Cavity baffle Nusselt Number ASME 2008 Summer Heat Transfer N S f e y m [1]. The Results are presented for Rayleigh number from 104 Proceedings of 2008 ASME...
Proceedings Papers

Proc. ASME. HT2008, Heat Transfer: Volume 1, 293-300, August 10–14, 2008
Paper No: HT2008-56413
... 10 07 2009 Experimental investigations have been reported on steady state natural convection from the outer surface of vertical square ducts in air. Five ducts have been used with cross section side length of 0.08, 0.07, 0.06, 0.04, and 0.02 m. The ducts are heated using internal...
Proceedings Papers

Proc. ASME. HT2008, Heat Transfer: Volume 3, 493-501, August 10–14, 2008
Paper No: HT2008-56078
... and incompressible flows. Stationary inserts can be efficiently employed as heat transfer enhancement device in the natural convection systems with compressible flow. Generally, a stationary heat transfer enhancement insert consists of a number of equal motionless units, placed on the inside of a pipe or channel...
Proceedings Papers

Proc. ASME. HT2008, Heat Transfer: Volume 1, 141-147, August 10–14, 2008
Paper No: HT2008-56172
... 10 07 2009 Steady, laminar, natural-convection flow in the presence of a magnetic field in a differentially heated square cavity which two insulated horizontal baffles attached to its vertical walls is considered. The vertical walls are at different temperatures while the horizontal...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 1, 157-159, July 17–22, 2005
Paper No: HT2005-72341
... 03 04 2009 Fundamental level research is presented in this paper discovering the optimum pin fin profile maximizing material utilization (maximum heat transfer with minimum volume) in the case of natural convection. Although this problem has been studied in the past, the current...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 1, 545-553, July 17–22, 2005
Paper No: HT2005-72300
... 03 04 2009 In this paper, a numerical study of natural convection from a disk is presented. The disk is placed vertically in a closed cavity (cylinder) and has a constant heat flux. Different numerical simulations of this test case are executed at various gravity accelerations (=g...
Proceedings Papers

Proc. ASME. HT2005, Heat Transfer: Volume 1, 645-652, July 17–22, 2005
Paper No: HT2005-72702
... 03 04 2009 Different Rayleigh (Ra)-Nusselt (Nu)-correlations exist for natural convection from bodies. Different characteristic lengths are used by different authors. This paper reports of an experiment in which Ra is varied in an intermediate range. It is an interesting range because...