The scaling and self-similarity of the velocity and concentration profiles for a pollutant-contained impinging jet in crossflow

被引：0
作者：
Fan J.-Y. [1 ]
Zhang Y. [2 ]
Wang D.-Z. [1 ]
机构：
[1] Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai
[2] Shanghai Key Laboratory of Power Station Automation Technology & SMIT Center, School of Mechatronics Engineering and Automation, Shanghai University, Shanghai
来源：
J Hydrodyn | 2006年 / 1卷 / 454-458期
基金：
中国国家自然科学基金;
关键词：
crossflow; impinging jet; pollutant; scaling; self-similarity;
D O I：
10.1007/BF03400488
中图分类号：
学科分类号：
摘要：
The scaling and self-similarity of the velocity and concentration profiles for a pollutant-contained impinging jet in crossflow were investigated on the basis of corresponding numerical results of three-dimensional flow and concentration fields in near region by employing the RNG turbulence model and large-eddy simulation (LES). The computed results indicate that there exists no universal similarity scaling for the impinging jet in crossflow owing to high three-dimensionality of the flow pattern and the anisotropy of the turbulence transportation in overall near region. The relative appropriate characteristic scales in various subregions of the impinging jet in near region depend mainly upon the directionality and flow regime. The velocity profiles along the jet axial direction display height-dominant scaling in the impingement subregion due to the slight deflected jet trajectory, and the approximate self-similarity of the velocity and concentration decays along the longitudinal direction still vary with the velocity ratio and water depth in the transition subregion under the domination of the laterally-spreading wall jet, respectively. © 2006, China Ship Scientific Research Center.
引用
收藏
页码：454 / 458
页数：4
相关论文
共 10 条
  • [1] Smith S.H., Mungal M.G., Mixing, structure and scaling of the jet in crossflow, Journal of Fluid Mechanics, 357, pp. 83-122, (1998)
  • [2] Xia L.-P., Yang Z.-F., Lam K.M., On the self-similarity of a jet in crossflow, Journal of Hydrodynamics, 12, 1, pp. 117-126, (2000)
  • [3] Maurel S., Solliec C., A turbulent plane jet impinging nearby and far from a flat plate, Experiments in Fluids, 31, 6, pp. 687-696, (2001)
  • [4] Fan J.-U., Investigation on density submerged impinging jets in a crossflow, (2003)
  • [5] Yakhot A., Orszag S.A., Yakhot V., Israeli M., Renormalization group formulation of large-eddy simulation, Journal of Scientific Computing, 4, pp. 139-158, (1989)
  • [6] Zhang Y., Wang D.-Z., Fan J.-U., Experimental investigations on diffusion characteristics of high concentration jets in environmental currents, Applied Mathematics and Mechanics, 23, 12, pp. 1429-1436, (2002)
  • [7] Zhang Y., Experimental and numerical investigations on the vortical structures of an impinging jet in crossflow, (2005)
  • [8] Fan J.-Y., Wang D.Z.Y., Three-dimensional mean and turbulence characteristics of an impinging density jet in a confined crossflow in near field, Journal of Hydrodynamics, 16, 6, pp. 737-742, (2004)
  • [9] Fan J.-Y., Zhang Y., Wang D.-Z., Formation and characteristics analyses of lateral high concentration convergence zones produced by a pollutant-contained impinging jet in flowing water, Advances in Water Science, 16, 5, pp. 623-627, (2005)
  • [10] Beltaos S., Rajaratnam N., Impinging circular turbulent jets, Journal of the Hydraulics Division, ASCE, 100, HY10, pp. 1313-1328, (1974)
1