Advanced SearchSearch Tips
A Numerical Study on Flow and Heat Transfer Characteristics for an Oblique Impingement Jet Using Model
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A Numerical Study on Flow and Heat Transfer Characteristics for an Oblique Impingement Jet Using Model
Choe, Yeong-Gi; Choe, Bong-Jun; Lee, Jeong-Hui;
  PDF(new window)
The numerical simulation has been conducted for the investigation of flow and heat transfer characteristics of an oblique impingement jet injected to a flat plate. The finite volume method was used to discretize the governing equations based on the non-orthogonal coordinate with non-staggered variable arrangement. The --ν(sup)'2 turbulence model was employed to consider the consider the anisotropic flow characteristics generated by the impingement jet flow. The predicted results were compared with the experimental data and those of the standard - turbulence model. The results of the --ν(sup)'2 model showed better agreement with the experimental data than those of the standard - model. In order to get the optimum condition, the flow and temperature fields were calculated with a variation of inclined angle(=30~90) and the distance between the jet exit and impingement plate-to-diameter (L/D=4~10) at a fixed Reynolds number(Re=20,000). For a small L/D, the near-peak Nusselt numbers were not significantly effected by the inclined angle. The near-peak Nusselt numbers were not significantly affected by the L/D in the case of a large . The overall shape of the local Nusselt numbers was influenced by both the jet orifice-to-plate spacing and the jet angle.
Oblique Impingement Jet; Model;Near-Pear Nusselt Number;
 Cited by
Cooper, D., Jackson, D. C., Launder, B. E., and Liao, G. X., 1993, 'Impinging Jet Studies for Turbulence Model Assessment-Ⅰ.Flow-Field Experiments,' Int. J. Heat and Mass Transfer, Vol. 36, No.10, pp. 2675-2684

Demuren, A. O., Robi, W. and Schonung, B. 1986, 'Systematic Study of Film Cooling with a Three Dimensional Calculation Procedure', ASME J. of Turbomachinery, Vol.108, pp. 125-130

Foss, J. F., 1979, 'Measurements in a Large-Angle Oblique Jet Impingement Flow,' AIAA J., Vol. 17, pp. 801-802

Goldstein, R. J., and Franchett, M. E., 1988, 'Heat Transfer From a Flat Surface to an Oblique Impinging Jet,' Transaction of the ASME, Vol. 110, pp. 84-90

이창호, 황상동, 조형희, 정학재, 1999, '단일축대칭 제트에 의한 경사충돌면에서 유동 및 열전달 특성,' 한국추진공학회지 제3권 제 1호, p.34-40

Rubel, A., 1981, 'Computations of the Oblique Impingement of Round Jets upon a Plane Wall,' AIAA J., Vol. 19, pp. 863-871

Launder, B. E., 1986, 'Low Reynolds Number Turbulence Near Walls,' UMIST Mechanical Engineering Dept. Rept. TFD/86/4, Univ. of Manchester, England, UK.

Durbin, P. A., 1991, 'Near-wall Turbulence Closure Modeling Without Damping Functions,' Theor and Comp. Fluid Dynamics, Vol. 3, No. 1, pp.1-13 crossref(new window)

Durbin, P. A., 1993, 'A reynolds Stress Model for Near-Wall Trubulence,' J. Fluid Mech. Vol. 249, pp. 456-498 crossref(new window)

Durbin, P. A., 1993, 'Application of a Near-Wall Turbulence Model to Boundary Layers and Heat Transfer,' Int. J. Heat and Fluid Flow, Vol, 14, No. 4, pp. 316-323 crossref(new window)

Durbin, P. A., 1995, 'Separated Flow Computations with the $k-e-v^2$ Model,' AIAA J.,Vol. 33, No. 4, pp. 659-664