矩形管中流體經圓柱狀質源之混合對流研究

A Study of Duct Flow Passing in A Channel with Cylinder Sources

馮志成(Ji Chen Feng)

指導教授 ： 王立文

元智大學/工程學院/機械工程學系/碩士(2000年)

摘要

無資料

關鍵字

混合對流 ； 質傳 ； 圓柱 ； 傾斜

並列摘要

An experimental investigation of mixed convection mass transfer from a cylinder and a plate mass sources flow of a CuSO4＋H2SO4＋H2O solution will be carried in an inclined rectangular channel with an electrochemical system .
The purpose of the present study is to investigate laminar fully developed flow in inclined rectangular channels with the types of the boundary of test section are: (A) cylinder is cathode and top plate is anode (B) cylinder is anode and top plate is cathode (C) cylinder is cathode and bottom plate is anode. The influence of the mass transfer rate and the boundary types between the sources has been investigated. The experiments would include three parts : (1)inclined angle θ= 0°(2)inclined angle θ> 0° (3)inclined angle θ< 0°.
To visualize the flow, the shadowgraph technique will be used. Electrical measurements will be used to obtain mass transfer rates and to infer a Sherwood number. The ranges of the parameters in the work are Ar=1, Sc=1700~2400, Re=50~300, Gr,m = 1.88×105 (Red = 7.94 ~ 34.93，Gr,m* = 4378),θ= -22.5°~ 22.5°,d / H = 0.125.
The mass transfer rate, Sherwood number, increases with increasing Re for a fixed Ra,m and increases with cylinder change from anode to cathode. When cylinder is cathode, Sherwood number increases with increasing absolute inclined angel. When the cylinder is anode, Sherwood number increases with increasing inclined angel, but quaking decreases with decreasing inclined angel.

並列關鍵字

mixed convection ； mass transfer ； cylinder ； inclined

參考文獻

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