Numerical Studies on Fluid Flow over a Cavity Involving Density Fields with and without Use of Spoiler Expending LES Approach

Authors

  • Dr. Nirmal Kumar Kund  Associate Professor, Department of Production Engineering, Veer Surendra Sai University of Technology, Burla, Odisha, India

Keywords:

Numerical Simulation, Supersonic Flow, Open Cavity, Spoiler, LES, Density Contour

Abstract

The present research implicates the development of an apposite numerical model concerning the supersonic flow past a three-dimensional open cavity with length-to-depth ratio of 2. The Mach number of the supersonic free-stream is 2 as well as the Reynolds number of the flow is 105.  The numerical simulations have been carried out by means of Large Eddy Simulation (LES) method. The Smagorinky model is considered for this investigation. The results have been demonstrated in the form of flow fields represented by the density contours. Very large recirculation is observed within the open cavity without the installation of the spoiler. However, the reduction of the recirculation inside the open cavity is attained by installing a spoiler at the leading edge of the cavity in the form of one-fourth of a cylinder. In addition, the changes in the flow structures within the open cavity by keeping the spoiler is fully examined. And, there exists the qualitative agreement between the two. The trends of results for both the stated cavities are as expected. In overall, the comparisons between the results of the open cavity flows with and without the installation of the spoiler at the leading edge of the cavity is also made.

References

  1. Heller, H. H., Holmes, D. G., & Covert, E. E. (1971). Flow-induced pressure oscillations in shallow cavities. Journal of sound and Vibration, 18(4), 545-553.
  2. Tam, C. K., & Block, P. J. (1978). On the tones and pressure oscillations induced by flow over rectangular cavities. Journal of Fluid Mechanics, 89(02), 373-399.
  3. Kaufman, I. I., Louis, G., Maciulaitis, A., & Clark, R. L. (1983). Mach 0.6 to 3.0 flows over rectangular cavities (No. AFWAL-TR-82-3112). Air force wright aeronautical labs wright-patterson AFB, OH.
  4. Sweby, P. K. (1984). High resolution schemes using flux limiters for hyperbolic conservation laws. SIAM journal on numerical analysis, 21(5), 995-1011.
  5. Rizzetta, D. P. (1988). Numerical simulation of supersonic flow over a three-dimensional cavity. AIAA journal, 26(7), 799-807.
  6. Anderson, J. D., & Wendt, J. F. (1995). Computational fluid dynamics (Vol. 206). New York: McGraw-Hill.
  7. Piomelli, U. (1999). Large-eddy simulation: achievements and challenges. Progress in Aerospace Sciences, 35(4), 335-362.
  8. Hamed, A., Das, K., & Basu, D. (2004). Numerical simulations of fluidic control for transonic cavity flows. AIAA Paper, 429, 2004.
  9. Li, W., Nonomura, T., Oyama, A., & Fujii, K. (2010). LES Study of Feedback-loop Mechanism of Supersonic Open Cavity Flows. AIAA paper, 5112, 2010.
  10. Vijayakrishnan, K. (2014) Unsteady RANS computations of supersonic flow over two dimensional cavity using OpenFOAM-A validation study. AIAA 2014.
  11. Sousa, R. G., et al. (2016). Lid-driven cavity flow of viscoelastic liquids. Journal of Non-Newtonian Fluid Mechanics, 234, 129-138, 2016.
  12. Tuerke, F., Pastur, L. R., Sciamarella, D., Lusseyran, F., & Artana, G. (2017). Experimental study of double cavity flow. Experiments in Fluids, 76, 2017.

IInternational Journal of Scientific Research in Computer Science, Engineering and Information Technology

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Published

2018-02-28

Issue

Volume 3, Issue 1, January-February-2018

Section

Research Articles

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This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
Dr. Nirmal Kumar Kund, " Numerical Studies on Fluid Flow over a Cavity Involving Density Fields with and without Use of Spoiler Expending LES Approach" International Journal of Scientific Research in Computer Science, Engineering and Information Technology(IJSRCSEIT), ISSN : 2456-3307, Volume 3, Issue 1, pp.153-159, January-February-2018.