くさび面の二次元衝突噴流に関する実験 : 乱れの分布とエネルギー収支

概要

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Turbulence properties and the balance of turbulence energy in a two-dimensional impinging jet on a wedge are investigated. The angles between the wedge surface to the jet axis φ are 30° and 45°. The profiles of u'/U_m, v'/U_m, q^^-^2/2U^2_m in the fully-developed flow region are larger than those of the two-dimensional wall jet, but the profile of w'/U_m is almost the same as those, and these profiles are not similar. Each term of the production, the dissipation and the diffusion in the turbulence energy equation is larger than that of the two-dimensional wall jet except for the advection term. The production and the diffusion terms in the case of φ=45° are larger than in the case of φ=30°. The pattern of the isopleths of <uv>^^-/U^2_j in the impinging region differs remarkably with each case of φ=30° and 45°.
一般社団法人日本機械学会の論文
1989-03-25