Pressure Drop Distribution Measurement Analysis In Micro Liquid Flow Channel

• Main Authors: Yu-Houl Shih, 施宇豪
• Other Authors: C. Gau
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/w68mf9

碩士 === 國立成功大學 === 航空太空工程學系碩博士班 === 90 === 　　The purpose of the thesis is to use DI water as the work fluid and to investigate the cold liquid fluid flow phenomenon of the rectangular microchannel. Microchannels are constructed of the silicon and SU8 photoresist respectively. The widths of the microchannels are always 500μm, and the heights of the microchannels are about 15μm and 36μm in different materials respectively. Because the aspect ratio of our microchannel is bigger than 8[16], I take the parallel plates theory in my analysis. 　　To avoid the error of the pressure loss calculation in my experiment analysis, I construct a correlation about the difference of the microchannel length and the driven pressure drop from inlet sump to outlet sump. To use the correlation I can get the pressure drop in fully velocity development region precisely. And the correlation formulation is conveniently to analysis another relative factors. 　　The results of our microchannel experiment demonstrate that the mass flow rate is less than the prediction of the conventional theory. And the introduced Reynolds number is less than the prediction of the conventional theory, but the skin friction coefficient (Cf) and friction factor (f) is bigger than the prediction of the conventional theory.