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International Journal of Information Technology & Computer Science ( IJITCS )

Abstract :

The numerical finite element method of Newtonian fluid through the abrupt 4:1 contraction flow of rounded corner geometry was studied by forcing inlet boundary with pressure-driven velocity flow. The kinematic behaviors of flow were observed from streamline path, shear stress value and vortex size with a models of Navier-Stokes equation in two-dimensional planar isothermal incompressible creeping flow with no-slip condition. Pressure driven condition at inlet boundary was enforced each time step to achieve the accurate result and made the outcome more secure. The solution was attained via semi-implicit Taylor-Galerkin pressure-correction scheme before the treatment of streamline-Upwind/Petrov-Galerkin and velocity gradient recovery are employed to confirm the stability. The benchmark of velocity for each mesh patterns before and after treatment of drag velocity was displayed via visualization of color contours. Finally the presentation of line contours for streamline was depicted to reflect the vortex size.

Keywords :

: pressure-driven velocity flow; 4:1 contraction flow; rounded corner; fractional step; feedback.

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