Abstract
The aim of the present work is to investigate the mass transfer evolution in developing flow of Newtonian and non-Newtonian electrolyte solution flowing through an annulus with radius ratio a = 0.70. The non-Newtonian solution can be described in terms of power-law model. The rheological behaviour of the electrolyte was experimentally determined. Using the electrochemical method, the mass transfer coefficients were determined for different electrode lengths L= 0.1; 0.3 and 0.5 m, always located just downstream of the cell entrance, taking into account both developments of the hydrodynamic and concentration boundary layers. The results corresponding to Newtonian and non-Newtonian power law fluid flows were presented and were compared to the literature data.
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