Abstract
An experimental study of mixed-convection mass transfer flow of a CuS04 + H2S04 + H20 solution in a horizontal channel is performed using an electrochemical system. Unstable concentration gradients imposed by a cathodic bottom initiate an ascending (secondary) flow of light boundary-layer fluid into the free stream. To visualize the flow, the shadowgraph technique is used. Electrical measurements are used to obtain mass transfer rates and to infer a Sherwood number. The ranges of the parameters studied in the present work for the square channel are Sc = 1,700-2,300, Re = 100-1,000, and Ra = 7·09 × 108-2·60 × 109
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