Simulation of a Wall Jet Flow over a Rectangular Cavity

Abstract:

The simulation of a turbulent wall jet flow over a rectangular cavity is realised by the low Re stress-omega model. FLUENT 6.3 CFD code was used as the solver. The structured grid was built using Gambit 2.3. A preliminary study of a wall jet flow and a wall jet backward facing step interaction has been undertaken to validate the turbulence model. The numerical approach reproduces fairly the experimental results. A wall jet flow over rectangular cavities of different aspect ratios was investigated. The cavity aspect ratio effect on the flow structure evolution, particularly on the reattachment phenomenon, was examined in this paper. The results of this study show that the flow structure is very sensitive to the cavity aspect ratio. The reattachment length in the wall jet incoming flow case is very short compared to that of the boundary layer incoming flow case.

• Periodical: Advanced Materials Research (Volume 274)
• Pages: 1-11
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.274.1
• Online since: July 2011
• Authors: Fatima Madi Arous, Amina Mataoui, Abdellali Terfous, Abdellah Guenaim
• Keywords: Backward Facing Step Flow, Cavity Flow, Reattachment, Turbulence Modelling

References

[1] P. S. B Zdanski, M. A. Ortega, G. C. R. Nide & Fico, International Communications in Heat and Mass Transfer (2006) Vol. 33 4 pp.458-466.

DOI: 10.1016/j.icheatmasstransfer.2006.01.007

[2] J. W. Ball, Proc ASCE, J. Hydraulics Division, (1959) 85, pp.81-114.

[3] S. Crook, R. Kelso & J. Drbik, 16th Australasian Fluid Mechanics Conference, Crown Plaza, Gold Coast, Australia, (2007) pp.429-435.

[4] C. Noger, Thèse de Doctorat (1999) Université de Poitiers.

[5] C. KyoungSilk, C. George & P. Seung-O, 4st International conference on computational heat and mass transfer. Paris Cachan, France (2005) 138 pp.17-20.

[6] L. Larcheveque, P. Comte & O. Labbé, 16éme Congrès Français de Mécanique (2003) Nice.

[7] K. K. Ahuja & J. Mendoza, NASA (1995) Contractor Report 4653.

[8] Rossiter, J. E., Aeronautical Research Council Reports and Memoranda (1964) Technical Report 3438.

[9] V. Sarohia, Thesis of Doctor of Philosophy (1975) California Institute of Technology) Pasadena.

[10] M. Sheryl, M. Gary Dewar & D. E. Wroblewski Experiments in Fluids (2004) 36 pp.781-804.

[11] D. C. Wilcox, DCW Industries, Inc. (1998), La Canada, California.

[12] H. K. Versteeg & W. Malalasekera (1995) First published.

[13] F. S. Lien & M. A. Leschziner, Computers and fluids (1994) 23 8 pp.983-1004.

[14] S. V Patankar, Series in computational methods in mechanics and thermal sciences hemisphere Publiching Corporation (1980).

[15] K. Badri, Thèse de doctorat, École doctorale sciences pour l'ingénieur de Nantes (1993).

[16] N. Nait Bouda, R. Schiestel, M. Amielh, C. Rey & T. Benabid, International Journal of Heat and Fluid Flow (2008) 29 4 pp.927-944.

DOI: 10.1016/j.ijheatfluidflow.2008.01.002

[17] Fluent 6. 3 Documentation.

[18] J. Eriksson, R. I. Karlsson, J. Persson, Experiments in Fluids (1998) 25 pp.50-60.

[19] E. B. Plentovich, Jr R. L. Stallings & M. B. Tracy (1993), Nasa Technical reports.

[20] A. Roshko (1955), NACA Technical Note, TN-3448.