601 L 型断面を有する鈍い物体のまわりの流れと流体抵抗

概要

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The research on the flow around a bluff body with L-type cross section was carried out by an experiment and numerical simulation. The effects of the body position for flow direction and Reynolds number Re on drag and lift coefficients were considered. The measurements of the drag and lift carried out by a direct method using the strain gauge load cells. Two kinds of L-type cross section body with equal sides of one side 35mm and the right-angled isosceles triangle of one side 35mm were used as test bodies. As the results, the drag and lift coefficients hardly are affected in Re. Those coefficients are entirely dominated by the body position for the flow direction. The drag coefficient shows the maximum value at the position in which the projected area of body in flow direction becomes a maximum. The lift coefficient shows the maximum value at the position in which the projected area becomes a minimum. The numerical simulation of the flow around a body was carried out by using CFD2000 developed by Adaptive Research Co, . Except for the position in which the projected area of the body became a minimum, the results of the calculation were agreed well the experimental values.
一般社団法人日本機械学会の論文
2003-10-30