Mathematical Model of Two‐Phase Flow in Advanced Micro Cooling Modules Incorporating Flow Pattern Phenomena

This paper presents the results of experimental research on two‐phase flow in a microchannel with verification and identification of data using concomitant measurement systems. Based on the results of the experimental research conducted on air‐water mixture flows in the full range of concentration and flow patterns in a horizontal square microchannel, a mathematical model based on in situ parameters is developed and presented. The model describes pressure losses in two‐phase flow incorporating flow pattern phenomena. A relation for the two‐phase heat transfer coefficient is also presented, which incorporates the flow patterns using a flow pattern coefficient. This model significantly reduces the difference between the experimental and calculated values typically encountered in previous efforts.