The study of flow characteristics of curved microchannel

Some curved microchannels with different curvature radiuses and geometrical dimensions were designed, and the flow characteristics of them were all tested. Based on the experiment results, different flow characteristics of them were obtained. The flow characteristics of the fluid in curved microchannels were numerically studied by the classical N–S equation, and the obvious difference between the results of the numerical calculation and the experimental results was found. In order to explain this kind of difference, introduced a roughness-viscosity model to the classical N–S equation, and it was found that the prediction of roughness-viscosity model was in agreement with the experimental data.