VOLUME OF FLUID SIMULATION OF BOILING TWO-PHASE FLOW IN A VAPOR-VENTING MICROCHANNEL

By C. Fang, M. David, Anita Rogacs, Kenneth E. Goodson. 2010

139 citations recorded by the source corpus.

Vapor-venting microchannel heat exchangers are promising because they address the problems of high pressure drop, flow instability, and local dryout that are common in conventional two-phase microchannel heat sinks. We present a 3D numerical simulation of the vapor-venting process in a rectangular microchannel bounded on one side by a hydrophobic porous membrane for phase-separation. The simulation is based on the volume of fluid (VOF) method together with models for interphase mass transfer and capillary force. Simulation shows the vapor-venting mechanism can effectively mitigate the vapor accumulation issue, reduce the pressure drop, and suppress the local dry-out in the microchannel. Pressure surge is observed in the vapor-venting channel. The simulation provides some insight into the design and optimization of vapor-venting heat exchangers.

Subfields: Biomedical Engineering, Computational Mechanics, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/346622de1c7279e5d4c4e51c81de37fa6d293079

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In Biomedical Engineering

In Computational Mechanics

In Mechanical Engineering

Citations in the corpus

Experimental and computational investigation of vertical downflow condensation (2015, background): “[56] also set ri = 100, and, like Yang et al.”
Modeling of the Evaporation and Condensation Phase-Change Problems with FLUENT (2014, background): “However, r was specified at a different value, 100 s (1), in [16] and [17].”