... evaporation rate for screen mesh wicks is discussed. thin-film evaporation model liquid–vapor meniscus capillary pressure phase change screen wicks ansys fluent multiphase CFD VOF model electronics cooling heat pipes thermosyphons evaporation-driven flow heat and mass transfer Heat...

... of water vapor condensation phenomena were experimentally studied on a vertically aligned smooth copper substrate for a range of pressures and temperatures for two different liquid wettability conditions. The heat transfer performance is dominated by the phase change process at the solid–vapor interface...

... small bubbles essentially occurs in heat transfer regime. e-mail:  swapanparuya@gmail.com 18 01 2019 02 10 2019 13 01 2020 bubble collapse interfacial heat transfer numerical analysis phase change nonlinear dynamics Insight of growth and collapse history...

...), the method used here exploits a direct nonlinear numerical model associated with a parameter estimation technique to determine temperature dependent thermal conductivities. It has been applied to a water-agar gel during phase change and the thermal conductivities within the corresponding temperature interval...

.... The numerical model is based on the one-fluid mixture approach combined with the single-domain enthalpy porosity model for phase change, and it is implemented in fluent software package. The linear dependence of the liquidus and solidus temperatures with the concentration of the nanoparticles was assumed...

... of 13th International Heat Pipe Conference , Vol. 2 , pp. 76 – 86 . [15] Cai , Q. , and Chen C. L. , 2010 , “ Design and Test of Carbon Nanotube Biwick Structure for High-Heat-Flux Phase Change Heat Transfer ,” ASME J. Heat Transfer , 132 , p. 052403 . 10.1115/1.4000469 [16...

... for jet impingement heat transfer with phase change is presented combining these correlations. Critical heat flux (CHF) data were compared with literature correlations and a new correlation was developed for arrays of boiling jets. jet impingement phase change oblique jet arrays Impinging...

... opened within 25 ns. The second stage of the process is slower and lasts between 100 and 200 ns. The rapid hole opening process at high fluences can be attributed to recoil pressure from explosive phase change. Measurements of the transient shock wave position using the imaging apparatus in shadowgraph...

... condensation on the tube surface under different conditions are included in the paper. Marangoni condensation steam-ethanol mixture heat transfer mass transfer phase change heat-transfer enhancement Condensation of vapor mixtures has been widely studied for many years. In most cases...

...Liwu Fan; J. M. Khodadadi Highly-conductive nanostructures may be dispersed into phase change materials (PCM) to improve their effective thermal conductivity, thus leading to colloidal systems that are referred to as nanostructure-enhanced PCM (NePCM). Results of a theoretical and experimental...

... agreement between the two curves confirms that the total heat transfer withdrawn from the substrate is used for heat transfer associated with phase transformation. The phase-change enthalpy is not taken from the surrounding air. The heat flux withdrawn is thus the product of the phase-change enthalpy...

... dominated models. The results emphasize that natural convection has a critical effect in actual phase change processes. In numerical analyses, following assumptions are adopted: (1) PCM ( water ) is treated as the Newtonian and incompressible fluid (2) natural convection of water is laminar without...

... measurement sprays two-phase flow undercooling spray cooling phase change critical heat flux Spray cooling can be used to remove large amounts of heat from a target surface through single-phase and two-phase mechanisms. Increased mixing and agitation in the liquid layer and rapid removal...

... of a microchannel type vapor generator composed of parallel plates is one possible approach to satisfy the requirements of high efficiency heat exchange and low heat capacity. However, phase-change heat transfer mechanisms and characteristics for the microscale show distinct differences from the macroscale behavior...

... a solid wall reveals that the presence of the solid wall induces a change in the phase change heat transport by the working fluid, besides facilitating axial heat conduction in the solid wall. The analysis also highlights the effects of the thickness and thermal conductivity of the solid wall on its axial...

... surfaces with enhanced boiling heat transfer performance and novel phase-change based micro-actuators and energy harvesters. 28 09 2007 28 03 2008 15 10 2009 bubbles cavitation flow simulation hydrophobicity wetting single bubble hydrophobic surface nucleate boiling...

...Ali Siahpush; James O’Brien; John Crepeau A detailed experimental and analytical study has been performed to evaluate how copper porous foam (CPF) enhances the heat transfer performance in a cylindrical solid/liquid phase change thermal energy storage system. The CPF used in this study had a 95...

... polymers soft materials evaporation nonboiling evaporative cooling phase change surface interface thermal management systems integration Microtrusses, also known as microframes ( 1 ), are polymeric sheetlike structures whose ordered networks of micro- to nanoscale rods, struts, cells...

... and subcooled water flowing in opposite directions. The transport equations for the two fluids are alternately solved in separate domains and then coupled at the interface by imposing mass, momentum, and energy jump conditions with phase change. The effects induced by changes in the interfacial shear were...

... with the modified two-phase mixture model is indispensable under the high heat flux conditions of over 1 MW ∕ m 2 . 04 10 2005 03 05 2007 30 01 2008 convection flow simulation flow through porous media phase change materials porous materials two-phase flow porous media phase...