Institute of Space and Aeroautical Science University of Tokyo
Institute of Space and Aeroautical Science University of Tokyo
Institute of Space and Aeroautical Science University of Tokyo
In the study of an inviscid supersonic flow past conical bodies at large angles of attack (relative incidence α/θ_0 > 1), one of the difficulties is the appearance of the vortical singularity in the flow field pointed out by Ferri. The phenomenon of the "lift off" of the vortical singularity causes the divergence of the computation of the conical flow field. In order to avoid the divergence, in this report we have proposed the method that varied a standard circular cone as follows; the windwardside shape leaves a circular cone as it is and the leeward-side shape is replaced by an elliptic cone, which is expanded gradually in proportion to the increase of the angle of attack as including the vortical singularity. By solving the flow field of this equivalent body and applying this results, we have attempted to approximate the pressure distribution of the standard circular cone at large angles of attack. The agreement between the results of the present method and the experiments is good.
大きな迎角をもつ錐体を過ぎる流れの研究(1)
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