Analysis of circular and square cylinder at low Reynolds number using CFD
Rahul Kumar, Kajal Sarmah, Kamlesh Kumari Sharma
The Flow past over a circular and square body for are carried out for Reynolds number 100 and numerically by using CFD code fluid fluent. Direct numerical simulation of two-dimensional, unsteady and incompressible laminar flow is numerically investigated at Reynolds number of 100. In the present work Navier-Stokes equations are solved by using finite difference Marker and Cell (MAC) method. The accuracy of the Navier-Stokes solver is validated by the simulation of flow past a square cylinder without the splitter plate. In the present analysis, the flow is assumed to be two dimensional. Results indicate that the In case of circular cylinder pressure in the upstream cylinder face has got large pressure than the front end face of square cylinder but in downstream of square cylinder has less pressure compared to circular cylinder. The lift coefficients of Square cylinder are less when compared with circular cylinder. The increase in Strouhal number decreases the vortex wavelength. The results are presented in the form of streamlines pattern, pressure distribution over the different type of cylinder, velocity Counter, drag coefficient and Strouhal number.
Rahul Kumar, Kajal Sarmah, Kamlesh Kumari Sharma. Analysis of circular and square cylinder at low Reynolds number using CFD. International Journal of Advanced Engineering and Technology. 2018; 2(3): 15-18.