Solutions to the incompressible Reynolds-averaged Navier–Stokes equations have been obtained for turbulent vortex breakdown within a slightly diverging tube. Inlet boundary conditions were derived from available experimental data for the mean flow and turbulence kinetic energy. The performance of both two-equation and full differential Reynolds stress models was evaluated. Axisymmetric results revealed that the initiation of vortex breakdown was reasonably well predicted by the differential Reynolds stress model. However, the standard model failed to predict the occurrence of breakdown. The differential Reynolds stress model also predicted satisfactorily the mean azimuthal and axial velocity profiles downstream of the breakdown, whereas results using the model were unsatisfactory. [S0098-2202(00)01601-1]
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March 2000
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A Numerical Study of Vortex Breakdown in Turbulent Swirling Flows
Robert E. Spall, Associate Professor Mem. ASME,
Robert E. Spall, Associate Professor Mem. ASME
Department of Mechanical and Aerospace Engineering, Utah State University, Logan, UT 84322-4130
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Blake M. Ashby, Research Assistant Student Mem. ASME
Blake M. Ashby, Research Assistant Student Mem. ASME
Department of Mechanical and Aerospace Engineering, Utah State University, Logan, UT 84322-4130
Search for other works by this author on:
Robert E. Spall, Associate Professor Mem. ASME
Department of Mechanical and Aerospace Engineering, Utah State University, Logan, UT 84322-4130
Blake M. Ashby, Research Assistant Student Mem. ASME
Department of Mechanical and Aerospace Engineering, Utah State University, Logan, UT 84322-4130
Contributed by the Fluids Engineering Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the Fluids Engineering Division November 23, 1998; revised manuscript received November 2, 1999. Associate Technical Editor: U. Ghia.
J. Fluids Eng. Mar 2000, 122(1): 179-183 (5 pages)
Published Online: November 2, 1999
Article history
Received:
November 23, 1998
Revised:
November 2, 1999
Citation
Spall , R. E., and Ashby , B. M. (November 2, 1999). "A Numerical Study of Vortex Breakdown in Turbulent Swirling Flows." ASME. J. Fluids Eng. March 2000; 122(1): 179–183. https://doi.org/10.1115/1.483247
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