渦発生体を付設した矩形管流路の熱伝達特性

抄録

In recent years, EGR coolers, which are heat exchangers for automobiles, are required to improve heat transfer performance and reduce size and weight for the purpose of improving fuel efficiency and reducing nitrogen oxides. Previous studies have revealed that longitudinal vortices induced by vortex generators installed near the surface of the heat exchanger promote heat transfer from the main vortex to the boundary layer. In this study, the heat transfer performance by the shape of the vortex generator (VG) using CFD is compared for the flow in the rectangular pipe channel. Moreover, the effect of the continuous shape is clarified from the calculation result of the case where the VG is installed in the offset fin channel.