抄録
The performance of the groove-embedded rectangular duct is investigated in this paper in the meaning of enhancing the fluid mixing under very low Reynolds number conditions. Both numerical and experimental studies have been carried out to discuss the groove shape effect on the mixing characteristics and to evaluate the numerical scheme and experimental procedures. The results obtained by each approach agreed fairly well with each other in a qualitative manner. By applying the groove, a higher mixing rate was obtained in a shorter length compared to a rectangular duct even in the channels with high aspect ratio. A better mixing was achieved with the case of asymmetric pattern than the symmetric case. The difference of the groove width also changed the flow and mixing characteristics, however, the total performance eventually did not differ much.
