Hydrodynamic Characteristics of Staggered Ribbed Backward Facing Step Flow with Inclined Impinging Jet

In this paper, A numerical study has been conducted to predict the hydrodynamic characteristics of the staggered ribbed backward facing step flow with inclined impinging jet. The impinging jet flow was inclined towards the main cross flow and the angle of inclination is ranged from  30 to  90 . The ribs were in staggered arrangement and aligned after the slot jet in normal direction to the main cross flow. The effect of angle of inclination and contraction ratio on hydrodynamic characteristics was investigated for jet and channel Reynolds number of 20000 and 16000 respectively. The aim of the present study is to verify how adding staggered ribs with inclined jet flow to the problem of backward facing can affect the hydrodynamic characteristics. The continuity, Navier-Stockes and energy equations was discretised on non-uniform staggered grid by using finite volume method. The resulted algebraic equations were solved by using a built home computer program based on simple algorithm. The obtained computed results verified that the recirculation regions and the turbulent kinetic energy is increased as ribs height and width increase. It was observed that the turbulent kinetic energy is increased as angle of inclination increases.