A Computational Study of Three-Dimensional Laminar Separation on a Prolate Spheroid at Incidence〔含討論〕

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This paper presents a computational study of three-dimensional laminar separation on a prolate spheroid at incidence. The fully-elliptic Navier-Stokes and continuity equations are solved using the regular grid, finite-analytic discretization, a PISO-type velocity-pressure coupling algorithm, and method of lines. An O-O-type body-conforming grid, which is suitable for the detailed study of the present problem, is used in the computation. An overview is give of the present approach, and numerical results are presented and discussed for a 6:1 prolate spheroid for several angles of attack. The latter includes comparisons with available experimental data. The present computational results display detailed flow structures in the post-separation region and near wake, such as the generation and development of the girthwise and longitudinal vortices or the separation patterns which can not be classified by the conventional open- and closed-type separation models.
社団法人日本船舶海洋工学会の論文
1996-03-25