分岐による流量分配に関する研究

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In a branching or bifurcation of fluid flow duct, the divided flow rates in the two downstream channels are influenced by the combination of angles, local shapes of splitter edge and downstream loads. In this paper, experimental results are discussed on the bifurcated water flow in rectangular cross section channels of 1 cm2 area. Not only the combination of angles 10°-30°, 10°-50° and 20°-50° but also the effect of the local shape modification as shown in Fig. 1 are examined. The divided flow rates are also influenced by Reynolds number and pulsation. Low Reynolds number flow results approximately equal the flow rates in both legs of different angle bifurcations. In the second part of this paper, a method to control the flow dividing ratio is presented. Flow rate is controlled by inserting a control plate into the flow passage from one side of the wall of rectangular channel in bifurcating area. The effects of control plates are measured in an equiangular bifurcation. The calculated values by a flow deflection model are compared with measured values in Fig. 17 when d_c=0. The tip position of the plate e/b=0.2 can deflect all the flow to either of the two channels.
明治大学の論文