Numerical smulation of turbulent flow around a rectangular prism located in a plane channel by non- linear K-s model

Abstract EN

The flow characteristics around a two dimensional rectangular prism located in a plane channel were investigated numerically.

The block is mounted on the bottom rectangular channel wall.

The Turbulent governing equations are solved in two-dimensional domain using a control volume method with power-law scheme and the k-s model associated with wall function to describe the flow.

The velocity and pressure terms of momentum equation are solved by PISO algorithm using the TEAM code (Turbulent Elliptic Algorithm Manchester). The parameters .studied include the entrance Reynolds number Re (lxlO5 —5xl05.

The obstacle height (h = 0.25 H, 0.5 H and 0.75 H).

Special emphasis is given in the systematic analysis to detail the effect of the Reynolds number (Reoh).

The validity of the numerical simulation presented in the present work has been evaluated by comparing with the experimental data.

As a result, the numerical predictions show good agreement with some experimental result.