DNSによる間欠制御された多重衝突噴流の流動・伝熱特性

抄録

In order to analysis the performance of heat transfer with multiple impinging jets, we investigate the DNS (direct numerical simulation) of two round impinging jets arranged at an inflow of flow field. In addition we introduce the intermittent control of inflow velocity. And a parameter, distance between jets is varied. From the view of time-averaged velocity distribution of multiple impinging jets, it reveals that the generation of flow phenomenon such as up-wash due to the interaction between two jets are reduced through the intermittent control. In the case that distance between jets is small, heat transfer performance is improved compared to when distance is large.