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An Experimental investigation of flow boiling characteristics of water in parallel microchannels
(American Society of Mechanical Engineers, 2004-08)
Microchannels are being considered in many advanced heat transfer applications including
automotive and stationary fuel cells as well as electronics cooling. However, there are
a number of fundamental issues from the ...
Numerical study of an evaporating meniscus on a moving heated surface
(American Society of Mechanical Engineers (ASME), 2004-07)
The present study is performed to numerically analyze an evaporating meniscus on a moving heated surface. This phenomenon is similar to the one observed at the base of a vapor bubble during nucleate boiling. The complete ...
Effect of entrance condition on frictional losses and transition to turbulence in minichannel flows
(American Society of Mechanical Engineers (ASME), 2004-06)
In studying the fluid flow and heat transfer in
microchannels and minichannels, various claims have been
made regarding transition at Reynolds numbers significantly
below 2300. As a first step in identifying the reasons ...
Optimization of microchannel geometry for direct chip cooling using single phase heat transfer
(American Society of Mechanical Engineers (ASME), 2004-06)
Direct cooling of an electronic chip of 25mm x 25mm
in size is analyzed as a function of channel geometry for
single-phase flow of water through small hydraulic
diameters. Fully developed laminar flow is considered ...
Effect of gravitational orientation on flow boiling of water in 1054 x 197 micron parallel minichannels
(American Society of Mechanical Engineers (ASME), 2004-06)
Microchannels and minichannels are being considered for high heat flux applications under microgravity environment in space missions. Due to the small hydraulic diameter, the effect of gravitational forces on flow boiling ...
Experimental study of flow patterns, pressure drop and flow instabilities in parallel rectangular minichannels
(American Society of Mechanical Engineers (ASME), 2004-06)
The use of phase change heat transfer in parallel minichannels and microchannels is one of the solutions proposed for cooling high heat flux systems. The increase in pressure drop in a two phase system is one of the problems, ...
Numerical simulation of growth of a vapor bubble during flow boiling of water in a microchannel
(American Society of Mechanical Engineers (ASME), 2004-06)
The present study is performed to numerically analyze growth of a vapor bubble during flow of water in a microchannel. The complete Navier-Stokes equations along with continuity and energy equations are solved using the ...
Evaluation of single phase flow in microchannels for high flux chip cooling - Thermohydraulic performance enhancement and fabrication technology
(American Society of Mechanical Engineers (ASME), 2004-06)
The increased circuit density on today’s computer chips
is reaching the heat dissipation limits for air-cooled
technology. Direct liquid cooling of chips is being
considered as a viable alternative. This paper reviews ...
Experimental study of heat transfer, pressure drop, and dryout for flow boiling of water in an oil heated minichannel
(American Society of Mechanical Engineers (ASME), 2004-06)
Heat transfer and pressure drop, are experimentally
recorded for flow boiling water in a single 706 mm circular
copper channel 158.75 mm long. Heat is supplied by heat
transfer oil at specified temperatures to a helical ...
Heat transfer mechanisms during flow boiling in microchannels
(American Society of Mechanical Engineers, 2004-02)
The forces due to surface tension and momentum change during evaporation, in conjunction
with the forces due to viscous shear and inertia, govern the two-phase flow patterns
and the heat transfer characteristics during ...