American Journal of Physics and Applications

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Numerical Investigation on the Effect of Inlet Conditions on the Oblique Shock System in a High-Speed Wind Tunnel

Received: 20 October 2013    Accepted:     Published: 30 November 2013
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Abstract

The Present study is conducted to find out the best inlet conditions for designing process of a high-speed wind tunnel. The inlet conditions are appropriate for the cases that the real nozzle has not been calculated and downstream parts designers (such as test section and diffuser designers) need a reasonable upstream flow condition for their calculations. Inlet boundary condition of each case has been specified by User-Defined Function. The process of User-Defined Function (UDF) specification is time-consuming and is based on a try and error method. Several cases of inlet conditions have been designed and examined. The comparison of results is shown in terms of cross-sectional and axial distributions of parameters and contours of Mach number and static pressure. Finally, the 1.2 m-length Ogive curve with 0.5 degree initial angle and after that, the case of 1.2 m-length ducthave been chosen as the equivalent nozzles.

DOI 10.11648/j.ajpa.20130103.16
Published in American Journal of Physics and Applications (Volume 1, Issue 3, November 2013)
Page(s) 91-98
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

High-Speed Flow, Wind Tunnel Design, Nozzle Curve Calculations, Computational Fluid Dynamics, Equivalent Nozzle

References
[1] J.M.A.Longo,"Modeling of high-speed flow phenomena," RTO AVI Lecture series on Critical Technologies for High-speed Vehicle Development, Belgium, May, 2004.
[2] R.E. Deem, "Pressure and heat-transfer distribution tests on a standard ballistic-type model HB-2 at mach 2 to 5, including the effects of shock impingement," Report S-R6, Douglas Aircraft Company, California, USA, Jun, 1963.
[3] J.D. Gray, and E. E. Lindsay, "Summary report on aerodynamic characteristics of standard model HB-1 and HB-2," Technical report AEDC-TDR-63-137, Arnold engineering development center, USA, 1964.
[4] S. Kuchi-Ishi, And E. Watanabe, "Comparative force/heat flux measurements between JAXA hypersonic test facilities using standard model HB-2 Part 1&2," JAXA research and development report, Japan Aerospace Exploration Agency, Japan, 2005.
[5] J.D.Anderson, "Modern compressible flow with historical perspective," McGraw-Hill Inc., New York, 2003.
[6] Group of writers, "Handbook of supersonic aerodynamics," Vol.6. Sec.17 Ducts, Nozzles and Diffusers, NAVWEPS Report 1488, 1964.
[7] B. E. Launder, N. D. Sandham, "Closure strategies for turbulent and transitional flows," Cambridge University Press, Cambridge, UK, 2002.
Author Information
  • Islamic Azad University, Parand Branch, Tehran, IRAN

  • Islamic Azad University, Parand Branch, Tehran, IRAN

  • Islamic Azad University, Parand Branch, Tehran, IRAN

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  • APA Style

    Mohammad Reza Heidari, Mahdi Karami, Fata Mohammadi Fard. (2013). Numerical Investigation on the Effect of Inlet Conditions on the Oblique Shock System in a High-Speed Wind Tunnel. American Journal of Physics and Applications, 1(3), 91-98. https://doi.org/10.11648/j.ajpa.20130103.16

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    ACS Style

    Mohammad Reza Heidari; Mahdi Karami; Fata Mohammadi Fard. Numerical Investigation on the Effect of Inlet Conditions on the Oblique Shock System in a High-Speed Wind Tunnel. Am. J. Phys. Appl. 2013, 1(3), 91-98. doi: 10.11648/j.ajpa.20130103.16

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    AMA Style

    Mohammad Reza Heidari, Mahdi Karami, Fata Mohammadi Fard. Numerical Investigation on the Effect of Inlet Conditions on the Oblique Shock System in a High-Speed Wind Tunnel. Am J Phys Appl. 2013;1(3):91-98. doi: 10.11648/j.ajpa.20130103.16

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  • @article{10.11648/j.ajpa.20130103.16,
      author = {Mohammad Reza Heidari and Mahdi Karami and Fata Mohammadi Fard},
      title = {Numerical Investigation on the Effect of Inlet Conditions on the Oblique Shock System in a High-Speed Wind Tunnel},
      journal = {American Journal of Physics and Applications},
      volume = {1},
      number = {3},
      pages = {91-98},
      doi = {10.11648/j.ajpa.20130103.16},
      url = {https://doi.org/10.11648/j.ajpa.20130103.16},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.ajpa.20130103.16},
      abstract = {The Present study is conducted to find out the best inlet conditions for designing process of a high-speed wind tunnel. The inlet conditions are appropriate for the cases that the real nozzle has not been calculated and downstream parts designers (such as test section and diffuser designers) need a reasonable upstream flow condition for their calculations. Inlet boundary condition of each case has been specified by User-Defined Function. The process of User-Defined Function (UDF) specification is time-consuming and is based on a try and error method. Several cases of inlet conditions have been designed and examined. The comparison of results is shown in terms of cross-sectional and axial distributions of parameters and contours of Mach number and static pressure. Finally, the 1.2 m-length Ogive curve with 0.5 degree initial angle and after that, the case of 1.2 m-length ducthave been chosen as the equivalent nozzles.},
     year = {2013}
    }
    

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    T1  - Numerical Investigation on the Effect of Inlet Conditions on the Oblique Shock System in a High-Speed Wind Tunnel
    AU  - Mohammad Reza Heidari
    AU  - Mahdi Karami
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    JF  - American Journal of Physics and Applications
    JO  - American Journal of Physics and Applications
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    AB  - The Present study is conducted to find out the best inlet conditions for designing process of a high-speed wind tunnel. The inlet conditions are appropriate for the cases that the real nozzle has not been calculated and downstream parts designers (such as test section and diffuser designers) need a reasonable upstream flow condition for their calculations. Inlet boundary condition of each case has been specified by User-Defined Function. The process of User-Defined Function (UDF) specification is time-consuming and is based on a try and error method. Several cases of inlet conditions have been designed and examined. The comparison of results is shown in terms of cross-sectional and axial distributions of parameters and contours of Mach number and static pressure. Finally, the 1.2 m-length Ogive curve with 0.5 degree initial angle and after that, the case of 1.2 m-length ducthave been chosen as the equivalent nozzles.
    VL  - 1
    IS  - 3
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