Abstract:
Turbulence is the chaotic motion of fluid occurring in most of the natural and
other flow fields. Since it is very difficult to treat the turbulent flow analytically,
various techniques and models have been developed to describe turbulent flow -
with the help of the increasing power of computers- numerically. The present
study incorporates a numerical treatment of a turbulent flow over a backward
facing step having a circular obstacle. The standard k turbulence model is
used to simulate and obtain the numerical results. This turbulence model has
been solved using Galerkin weighted residual finite element method. The effect
of size and position of the circular obstacle on the streamlines, velocity
magnitude, pressure distribution, velocity profiles and turbulent kinetic energy
profiles are presented graphically. The result shows that size and position of the
obstacle has noteworthy effect on the aforementioned parameter profiles.
