Effect of Non-uniform Heating on Electroosmotic Flow Through Microchannel
2021
The effect of non-uniform heating on the heat transfer characteristics for electroosmotic flow through a microchannel has been investigated numerically. The temperature field and Nusselt number are studied by changing the normalized wavelength of non-uniform heat flux \(\left( \gamma \right)\) and thermal Peclet number \(\left( {\text{Pe}} \right)\) in the range of \(1.5 \le \gamma \le 6\) and \(1 \le {\text{Pe}} \le 100\), respectively. It is found that the intensity of maximum temperature reduces for non-uniform heating as compared to the uniform heating. The maxima of local Nusselt number increases with a decrease in the wavelength of the non-uniform heat flux. The critical Peclet number \(\left( {{\text{Pe}}_{\text{c}} } \right)\) is found such that average Nusselt number shows the monotonic and non-monotonic variation with \(\gamma\).
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