加熱小物体による後向きステップ流れの圧力損失低減

抄録

In this study, numerical analysis is performed to consider a method for reducing the pressure loss over backward-facing step in low Reynolds number range. We attempted to reduce pressure loss with a heated small obstacle that is installed on the downstream wall of the step side. As a result, strength of backward flow behind the small obstacle in vortex is reduced due to buoyancy force, compared with the case where the small obstacle is not heated. Therefore, the pressure drop is further reduced by a heated obstacle.