Prediction of a Turbulent Flow in Bluff Body Stabilized Burner by Using Two Classical Models of Turbulence

Abstract:

In present study, a detailed investigation of an annular jet at high diameter ratio r = 0,905 has been reported numerically. The numerical simulation was performed by making use of the commercial CFD code which discretizes the solution domain into quadrilateral elements and use a numerical finite volume method coupled with a multigrid resolution scheme. In this research the applications of k-epsilon and k-omega models for prediction of a turbulent flow in annular jet are described. The flow governing equations are solved by using a performed coupled algorithm. The results of predicted axial velocity profiles are compared with the experimental data. The computations indicated that the results predicted by k-epsilon model are in good agreement with the experiment.

• Periodical: International Journal of Engineering Research in Africa (Volume 32)
• Pages: 112-123
• DOI: https://doi.org/10.4028/www.scientific.net/JERA.32.112
• Online since: September 2017
• Authors: Merouane Habib*
• Keywords: Annular Jet, Bluff-Body, Turbulent Flow

References

[1] M. Vanierschot, E. Van den Bulck. Influence of swirl on the initial merging zone of a turbulent annular jet, Physics journal. 20 (2008) 105104.

DOI: 10.1063/1.2992191

[2] A. Danlos, B. Patte-Rouland. Proper Orthogonal Decomposition application on the aerodynamic study of controlled annular jets, 14th Int Symp on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal (2008).

[3] C. Del Taglia, L. Blum, J. Gass, Y. Ventikos, D. Poulikakos. Numerical and Experimental Investigation of an Annular Jet Flow with large blockage, Journal of Fluids Engineering. 126 (2004) 375.

DOI: 10.1115/1.1760533

[4] H.J. Sheen, W.J. Chen, S.Y. Jeng. Recirculation zones of unconfined and confined annular swirling jets, American Institute of Aeronautics and Astronautics journal. 34 (1996) 572-579.

DOI: 10.2514/3.13106

[5] M. Vanierschot, E. Vanden Bulck. Hysteresis in Flow Patterns in Annular Swirling Jets, Experimental Thermal and Fluid Science. 31 (2007) 513-524.

DOI: 10.1016/j.expthermflusci.2006.06.001

[6] P.P.J. Stroomer. Turbulence and OH Structure in Flames, Ph.D. thesis, TU-Delft, Netherlands (1995).

[7] A. Danlos, G. Lalizel, B. Patte-Rouland. Experimental characterization of the initial zone of an annular jet with a very large diameter ratio, Experiments in Fluids Springer, (2013) doi 10. 1007/s00348-012-1418-x.

DOI: 10.1007/s00348-012-1418-x

[8] B. Patte-Rouland, G. Lalizel, J. Moreau, E . Rouland. Flow analysis of an annular jet by particle image velocimetry and proper orthogonal decomposition, Measurement science and technology. 12 (2001) 1404 -1412.

DOI: 10.1088/0957-0233/12/9/305

[9] H.A. Warda, S.Z. Kassab, K.A. Elshorbagy, E.A. Elsaadawy. An experimental investigation of the near field region of free turbulent round central and annular jets, Flow Measurement and Instrumentation. 10 (1999) 1-14.

DOI: 10.1016/s0955-5986(98)00042-9

[10] ANSYS Fluent v. 13. , Theory Guide: Release 13. 0, http: /www. ansys. com.

[11] ANSYS Gambit 2. 4, http: /www. ansys. com.

[12] B. E. Launder, G. J. Reece, W. Rodi. Progress in the Development of a Reynolds-Stress Turbulent Closure, Journal of Fluid Mechanics. 68 (1975) 537-566.

DOI: 10.1017/s0022112075001814

[13] D. C. Wilcox. Turbulence Modeling for CFD, 3rd ed., DCW Industries, Inc. La Cañada, CA, (2006).

[14] G . Lalizel. Experimental characterization of aerodynamics of an annular jet with a very large diameter ratio, PhD thesis, University of Rouen (2004).

[15] B. E. Launder and D. B. Spalding. The Numerical Computation of Turbulent Flows, Computer Methods in Applied Mechanics and Engineering, 3 (1974) 269-289.

DOI: 10.1016/0045-7825(74)90029-2