Numerical Predictions of Turbulent Flow over a Surface-Mounted Rib
Publication: Journal of Engineering Mechanics
Volume 125, Issue 5
Abstract
This study accurately predicts cases of turbulent flow around a surface-mounted two-dimensional rib of varying length. The numerical method employs a finite-difference scheme for integrating the elliptic Reynolds-averaged Navier-Stokes equations and the continuity equation. The two-equation k − ε turbulence model is employed to simulate the turbulent transport quantities and solve the problem. The near-wall regions of the separated sides of the rib are resolved by a near-wall model in a two-layer approach instead of the wall-function approximation. Computations for flow over a surface-mounted rectangular rib are conducted for varying rib lengths. Results indicate that upstream of the obstacle the length of the recirculating region remains unchanged with varying rib length, while the downstream length of the recirculating region is a strong function of rib length and changes nearly linearly as B/H varies from 0.1 to 4.0. Reattachment on top of the rib, owing to its increasing length, affects the downstream boundary layer development.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Acharya, S., Dutta, S., Myrum, T. A., and Baker, R. S. ( 1994). “Turbulent flow past a surface-mounted two-dimensional rib.” ASME, J. Fluids Engrg., 116, 238–246.
2.
Antoniou, J., and Bergeles, G. ( 1988). “Development of the reattached flow behind surface-mounted two-dimensional prisms.” ASME J. Fluids Engrg., 110, 127–133.
3.
Benodekar, R. W., Goddard, A. J. H., Gosman, A. D., and Issa, R. I. ( 1983). “Numerical prediction of turbulent flow over surface-mounted ribs.” AIAA J., 23, 359–366.
4.
Bergeles, G., and Athanassiadis, N. ( 1983). “The flow past a surface-mounted obstacle.” ASME J. Fluids Engrg., 105, 461–463.
5.
Chen, H. C., and Patel, V. C. ( 1988). “Near-wall turbulence models for complex flows including separation.” AIAA J., 26, 641–648.
6.
Durst, F., and Rastogi, A. K. ( 1979). “Turbulent flow over two-dimensional fences.” Turbulent Shear Flows, 2, 218–232.
7.
Hwang, R. R., and Peng, Y. F. ( 1994). “Effect of near-wall approach methods on the predictions of complex flows with flow separation and secondary reversed flow.” J. Chinese Inst. Engrs., 17, 421–428.
8.
Hwang, R. R., and Peng, Y. F. ( 1995). “Computation of backward-facing step flows by a second-order Reynolds stress closure model.” Int. J. Numer. Methods in Fluids, 21, 223–235.
9.
Launder, B. E., and Spalding, D. B. ( 1974). “The numerical computation of turbulent flows.” Computational Methods in Appl. Mech. and Engrg., 3, 269–289.
10.
Michelassi, V., and Shih, T. H. ( 1991). “Low Reynolds number two-equation modeling of turbulent flows.” NASA Tech. Memor. 104368, National Aeronautics and Space Administration, Washington, D.C.
11.
Nichols, B. D., Hirt, C. W., and Hotchkiss, R. S. ( 1988). “SOLA-VOF: A solution algorithm for transient fluid flow with multiple free boundaries.” Los Alamos Scientific Lab. Rep. LA-8355, Los Alamos, N.M.
12.
Patal, V. C., Rodi, W., and Scheuerer, G. ( 1984). “Turbulence models for near-wall and low Reynolds number flows: A review.” AIAA J., 23, 1308–1319.
13.
Patankar, S. V., and Spalding, D. B. ( 1972). “A calculation procedure for heat, mass, and momentum transfer in three-dimensional parabolic flows.” Int. J. Heat and Mass Transfer, 5, 1878–1906.
14.
Rodi, W. ( 1991). “Experience with two-layer models combining the k-model with a one-equation model near the wall.” AIAA Paper 91-0216, Proc., 29th Aerosp. Sci. Meeting, American Institute of Aeronautics and Astronautics, Reston, Va.
15.
Van Doormaal, J. P., and Raithby, G. D. ( 1984). “Enhancements of the simple method for predicting incompressible fluid flow.” Numerical Heat Transfer, 7, 147–163.
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 125 • Issue 5 • May 1999
Pages: 497 - 503
History
Published online: May 1, 1999
Published in print: May 1999
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.