Numerical Investigation of Miscible Fluids Interaction in T Micromixer with and Without Obstacles

The present work focuses on analyzing the mixing improvements of micro-mixers in the presence of the obstacles for the interaction of two miscible fluids. In devoid of any external agencies (such as electro-magnetic fields, pulsatile flow), obstruction in the flow field considerably increases the miscibility of the fluids. Hence, the obstacles are integrated in the micro-mixers for better mixing. In this work, we analyse the role of the obstacle shape in the T shaped micro-mixer. The broadly used shapes like semi-circular, square, triangular and inclined obstacles are considered for the study. The contour plots of volume fractions and the detailed comparison are provided for mixing trends of different obstacles, which provides a clear direction for the best choice.