2022-05-29T08:12:43Zhttps://jaxa.repo.nii.ac.jp/?action=repository_oaipmhoai:jaxa.repo.nii.ac.jp:000452942022-03-15T09:33:46Z01887:0189301896:01898:01913:01917
Aerodynamic Forces Acting on a Finite Rectangular Slender Bodyenghttp://id.nii.ac.jp/1696/00045288/Technical Report角のある細長物体に作用する空気力楯, 篤志吉永, 崇TATE, AtsushiYOSHINAGA, Takashi航空宇宙技術研究所National Aerospace Laboratory(NAL)航空宇宙技術研究所報告 = Technical Report of National Aerospace Laboratory TR-10351035471989-09To estimate the nonlinear transient moment acting on spinning square cylinders in a plane normal to the flow direction, the force and moment coefficients were measured for a semi-finite square cylinder (fineness ratio 5) settled in a wind tunnel. Yaw angle β of the model was changed through a range of -45deg to 45deg and the Reynolds number was varied from 0.7×10(exp 5) to 5.7×10(exp 5). The results show : (1)Up to β(approximately)equal to 10deg the yawing moment coefficient Cn increases gradually and the magunitude is less than 1/3 of the two-dimensional square square cylinders. The Cn begins to increase rapidly from β(approximately)equal to 10deg showing the maximum value at β＝16deg. (2)The effect of the Reynolds number on the forces and the moments is small compared to that for a circular cylinder. (3)The velocity compoment directing to the finite end of the semi-finite square cylinder is great in the separated region around the cylinder.0389-4010https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=45294&item_no=1&attribute_id=31&file_no=1資料番号: NALTR1035000レポート番号: NAL TR-10352020-01-29