Mixed Solutal Convection in the Duct Flow Passing Through a Channelwith an Inclined finite Flat Plate Source（Cathode）
| Autor: | Cheng-Nan Huang, 黃正男 |
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| Rok vydání: | 2007 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 95 An experimental investigation of mixed solutal convection in the duct flow passing through a channel with an inclined finite flat plate source(cathode). With the mass transport factor on the channel flow, the flow patterns have become more complex. The fluids from the anode or the cathode are denser or less dense so that they do not match the flow patterns in the pure fluid dynamics. Seldom research can be found on this subject. An experimental study of mixed convection with CuSO4+ H2SO4 + H2O solution in the inclined channel is performed. The shadowgraph technique is used to visualize the flow and to determine the nature and effect of solutal driven secondary flows in the inclined channel with the an inclined finite flat plate sources(cathode) inside. The ranges of the parameters in the present work are : Ar=1 ， Sc=1700~2400， Re=50~300，Grm=1.67×105，（Reb= 10~60，Grm* =2.09×104) ，θ= -15°~15°，ψ = -10°~10°, b/ H =0.2， w/ b = 8。 Some results about the mass transfer rate are also clearly found. With increasing the Reynolds number, the corresponding Sherwood number is increasing, for the Reynolds number is directly proportional to the Sherwood number. When the finite flat plate is inclined, the corresponding Sherwood number is increasing, the angle of the finite flat plateψ＝-10°, the larger Sherwood number can be. While changing anode position, because the inclination angle changes, Sherwood number will also have different values. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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