Abstract
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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Smith S H, Mungal M G. Mixing, structure and scaling of the jet in crossflow[J]. Journal of Fluid Mechanics, 1998, 357: 83–122.
XIA Li-ping, YANG Zhi-feng, LAM Kit Ming. On the self-similarity of a jet in crossflow[J]. Journal of Hydrodynamics (Ser. B), 2000, 12(1): 117–126.
Maurel S, Solliec C. A turbulent plane jet impinging nearby and far from a flat plate[J]. Experiments in Fluids, 2001, 31(6): 687–696.
FAN Jing-yu. Investigation on density submerged impinging jets in a crossflow[D]. Ph.D. Thesis, Shanghai: Shanghai University, 2003. (in Chinese)
Yakhot A, Orszag S A, Yakhot V, Israeli M. Renormalization group formulation of large-eddy simulation[J]. Journal of Scientific Computing, 1989, 4: 139–158.
ZHANG Yan, WANG Dao-zeng, FAN Jing-yu. Experimental investigations on diffusion characteristics of high concentration jets in environmental currents[J]. Applied Mathematics and Mechanics (English Edition), 2002, 23(12): 1429–1436.
ZHANG Yan. Experimental and numerical investigations on the vortical structures of an impinging jet in crossflow[D]. Ph.D. Thesis, Shanghai: Shanghai University, 2005. (in Chinese)
FAN Jing-yu, WANG Dao-zeng, Zhang Yan. Three-dimensional mean and turbulence characteristics of an impinging density jet in a confined crossflow in near field[J]. Journal of Hydrodynamics (Ser. B), 2004, 16(6): 737–742.
Fan Jing-yu, Zhang Yan, Wang Dao-zeng. Formation and characteristics analyses of lateral high concentration convergence zones produced by a pollutant-contained impinging jet in flowing water[J]. Advances in Water Science, 2005, 16(5): 623–627. (in Chinese)
Beltaos S, Rajaratnam N. Impinging circular turbulent jets[J]. Journal of the Hydraulics Division, ASCE, 1974, 100(HY10): 1313–1328.
Author information
Authors and Affiliations
Corresponding author
Additional information
Project supported by the National Natural Science Foundation of China (Grant No: 10572084) and Shanghai Leading Academic Discipline Project (No: T0103, Y0103)
Biography: FAN Jing-yu (1968-), Male, Doctor
Rights and permissions
About this article
Cite this article
Fan, Jy., Zhang, Y. & Wang, Dz. The scaling and self-similarity of the velocity and concentration profiles for a pollutant-contained impinging jet in crossflow. J Hydrodyn 18 (Suppl 1), 454–458 (2006). https://doi.org/10.1007/BF03400488
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03400488