... unexplored. In this study, a two-phase flow distribution model is used to investigate the impact of uneven heating on the flow distribution behavior of parallel microchannels undergoing boiling. Under lateral uneven heating (i.e., the channels are each heated to different levels, but the power input...

... natural convection neural nets two-phase flow Recently, artificial neural networks (ANNs) have become increasingly prevalent in solving engineering problems particularly in natural convection heat and flow processes ( 17 18 19 20 ) with a considerable reduction in computation time. ANNs...

... a complex molding compound flow behavior with multiple microchips in a single cavity. The developed numerical algorithm is based on the finite difference method combined with the robustness of volume of fluid volume-tracking method to solve the two-phase flow field in complex mold and die geometries. Twelve...

...Jaeseon Lee; Issam Mudawar This study examines the pressure drop characteristics of subcooled two-phase microchannel heat sinks. A new model is proposed, which depicts the subcooled flow as consisting of a homogeneous two-phase flow layer near the heated walls of the microchannel and a second...

...Christopher A. Konishi; Weilin Qu; Frank E. Pfefferkorn This study concerns pressure drop of adiabatic water liquid-vapor two-phase flow across an array of 1950 staggered square micropin-fins having a 200 × 200 μ m cross section by 670 μ m height. The ratios of longitudinal pitch and transverse...

.... cooling refrigerants refrigeration two-phase flow cooling inverter electronics R-134a two-phase flow rotary compressor The rapid increase in cooling demand subject to the advances of the high performance electronic chips and the microelectronic devices becomes more and more severe...

... procedure. 25 02 2004 17 12 2004 thermal management (packaging) heat sinks integrated circuit packaging two-phase flow microfluidics channel flow coolants Thermal engineers in the electronics industry are facing unprecedented challenges of removing enormous amounts of heat...

... and heat transfer in two-phase micro-channel heat sinks. In the present study, experiments were conducted with adiabatic nitrogen-water two-phase flow in a rectangular micro-channel having a 0.406 × 2.032 mm 2 cross-section. Superficial velocities of nitrogen and water ranged from 0.08 to 81.92 m/s...

... vertical tubes Δ P . Preliminary experiments without power input to the test chip were conducted to study the natural circulation characteristics of the test loop. Due to the nature of two-phase flow, the flow rate of FC-72 showed a fluctuation. Figure 4 shows the average flow rate W...

... coolant passages. This understanding is the primary goal of this paper. This goal is realized by exploring the following aspects of boiling in micro-channels: hydrodynamic instability, two-phase flow patterns, pressure drop, and convective boiling heat transfer. High-speed photographic methods were used...

... cooling channel flow two-phase flow power semiconductor devices Several cooling schemes have been developed in recent years to combat the large increases in heat dissipation from electronic and power devices. Air-cooled heat sinks are presently found in most personal computers, but are rapidly...

.... Culham. 12 October 2001 10 06 2003 heat pipes capillarity two-phase flow evaporation undercooling flow separation flow through porous media thermal conductivity pipe flow The control of operating temperature, regardless of power input, makes future use of CPL systems...