Conference Paper

Lid-Driven Cavity Flow with Elliptic Obstacle at Different Orientations

Elbadry Y.T.
Hamada A.A.
Boraey M.A.
Abdelrahman M.M.

The aim of the present work is to predict the flow field around an elliptic obstacle at different orientations inside a square Lid-Driven Cavity (LDC). The Lattice Boltzmann Method (LBM) is used to simulate the flow at a Reynolds number, Re, of 100, using the two-dimensional nine-velocity, (D2Q9) lattice configuration and the BGK collision operator. The in-house code is validated using data from the literature for the case of LDC with a central circular cylinder. Different ellipse orientations are tested (0°, 30°, 45°, 90°, 120°, 145°, and 150°) to check the effect of orientation on the vortex formation. Further, the cases are compared with the case of a circular obstacle. The results show that the orientation affects the induced vortex size and location. The vortex size is maximum at an orientation angle of 0° and starts to decrease until it reaches its minimum size at an orientation angle of 90°. Then, it increases again with the increase of the orientation angle until 180°. © 2021 IEEE.