Friction in Micro-Channel Flows of a Liquid and Vapor in Trapezoidal Grooves

미소 사다리꼴 그루브를 갖는 채널내의 유동에서 기-액의 상호마찰의 영향

The flow of liquid and vapor is investigated in trapezoidal grooves. The effect of variable shear stress along the interface of the liquid and vapor is studied for both co-current and counter-current flows. Velocity contours and results fur the friction are obtained for both trapezoidal grooves. An approximate relation that was previously utilized for the friction for the liquid was modified to obtain accurate agreement with the results for trapezoidal grooves.