The Intermediate Wake of a Thick Flat Plate with a Circular Trailing Edge

[摘要] The intermediate wake region of a thick flat plate with a circular trailing edge (TE) is investigated with a direct numerical simulation (DNS). The upper and lower separating boundary layers are both turbulent and are statistically identical; the resulting wake is symmetric in the mean. Earlier research dealt with the near/very-near wake of the same plate (x/D < 13.0, x is the streamwise distance from the center of the circular TE and D is the plate-thickness/TE-diameter). In the present investigation the emphasis is on the evolution of shed-vortex structure and turbulence intensity distributions with increasing x; the focus is on the region 20.0 < x/D < 40.0. Profile similarity in wake velocity statistics is explored.

[发布日期] 2019-08-01

[学科分类] 力学，机械学

[关键词] DIRECT NUMERICAL SIMULATION;WAKES;TRAILING EDGES;FLAT PLATES;THICK PLATES;TURBULENCE;BOUNDARY LAYERS