1328 大迎角物体背後の剥離渦における速度変動の相関

概要

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Three-dimensional separation of the flow over a slender body at high angles of attack is difficult to model and still a challenging problem. The singularity of the flow, such as large side forces and yawing moments, is caused by mutual interactions of three-dimensional separation and separated vortices. In this study, the flow in the cross-flow separation region of an axisymmetric paraboloid at 50 and 60 deg angles of attack has been investigated experimentally by hot wire anemometer. Reynolds numbers are 9.0×(10)^3 and 1.8×(10)^4 referred to the base diameter. It was suggested that the relations between separated vortex and the other flow regions, such as primary separated flow region, reattachment flow region and external flow region, are estimated calculating two-points velocity cross- correlation in various cross-sections.
社団法人日本機械学会の論文
2002-09-20