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Acoustic characteristics of supersonic rectangular jets issuing from nozzles with diagonal expansion ramps

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Abstract

The effect of expansion ramps on the acoustic behavior of a supersonic rectangular jet (AR = 2) is studied and compared to a plain rectangular jet. Unheated air jets are issued from converging–diverging nozzles which are operated at Mach number 1.8, Reynolds number (based on equivalent diameter) \(1.86 \times 10^{5}\), and at three different inlet total pressures corresponding to over, optimum and underexpansion levels. A plain rectangular nozzle is considered as the baseline model; two separate nozzles with expansion ramps cut at the diagonal ends on major and minor internal surfaces are considered for the investigation. These expansion ramps are intended to cause a Prandtl–Meyer expansion near the nozzle exit and together the diagonal arrangement of ramps induces vorticity to the jet in addition to the corner vortices emanating from the rectangular nozzle exit section. To understand the jet acoustic behavior and directivity of noise, far-field microphone measurements are performed in planes that are downstream, sideline, and upstream to the nozzle exit. The noise results obtained reveal a highly asymmetric nature in the sound field. Compared to the plain rectangular jet, the screech noise has been observed to be lesser in jet from the nozzle with ramps on the major sides. Acoustic benefit in terms of overall sound pressure levels has been exhibited by both ramped jets, especially for the overexpanded condition in all directions. For optimum expansion level, the plain rectangular jet radiated lesser noise levels in all directions. Of all cases studied, minor side ramps are observed to be the loudest at underexpansion conditions in upstream directions. With the obtained results, the major side ramps are observed to act as effective screech noise suppressors at all expansion levels. Both ramped jets have resulted in reduced overall noise levels (in comparison with the plain rectangular jet) at overexpansion level, with minor side ramps performing better.

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References

  1. Ahuja KK (1990) An evaluation of various concepts of reducing supersonic jet noise. In: 13th Aeroacoustics conference. AIAA-90-3982. https://doi.org/10.2514/6.1990-3982

  2. Ahuja KK (2003) Designing clean jet noise facilities and making accurate jet-noise measurements. In: AIAA Aerospace Sciences Meeting and Exhibit, p 0706

  3. Aoki T, Kweon YH, Miyazato Y, Kim HD, Setoguchi T (2006) An experimental study of the nozzle lip thickness effect on supersonic jet screech tones. J Mech Sci Technol 20(4):522–532

    Article  Google Scholar 

  4. Beranek LL, Sleeper HP Jr (1946) The design and construction of anechoic sound chambers. J Acoust Soc Am 18(1):140–150

    Article  Google Scholar 

  5. Bogadi S, Sridhar BTN (2019) Decay of supersonic rectangular jet issuing from a nozzle with diagonal expansion ramps. Therm Sci 23(6B):3929–3940

    Article  Google Scholar 

  6. Cavalieri AVG, Jordan P, Colonius T, Gervais Y (2012) Axisymmetric superdirectivity in subsonic jets. J Fluid Mech 704:388–420

    Article  MathSciNet  Google Scholar 

  7. Chen Z, Wu JH, Ren AD, Chen X, Huang Z (2017) Energy transfer mechanism of supersonic jet noise through rectangular nozzles. Noise Control Eng J 65(2):110

  8. Edgington-Mitchell D, Jaunet V, Jordan P, Towne A, Soria J, and Honnery D (2018) Upstream-travelling acoustic jet modes as a closure mechanism for screech. J Fluid Mech. https://doi.org/10.1017/jfm.2018.642

  9. Edgington-Mitchell D (2019) Aeroacoustic resonance and self-excitation in screeching and impinging supersonic jets—a review. Int J Aeroacoust 18(2–3):118–188

    Article  Google Scholar 

  10. Edgington-Mitchell D, Wang T, Nogueira P, Schmidt O, Jaunet V (2021) Waves in screeching jets. J Fluid Mech 913(A7):1–29

    MathSciNet  Google Scholar 

  11. Goss AE, Veltin J, Lee J, McLaughlin DK (2009) Acoustic measurements of high-speed jets from rectangular nozzle with thrust vectoring. AIAA J 47(6):1482–1490

    Article  Google Scholar 

  12. Gutmark E, Bowman HL, Schadow KC (1992) Flow and acoustic features of a supersonic tapered nozzle. Exp Fluids 13:49

    Article  Google Scholar 

  13. Gutmark EJ, Grinstein FF (1999) Flow control with noncircular jets. Annu Rev Fluid Mech 31(1):239–272

    Article  Google Scholar 

  14. Hay JA, Rose EG (1970) In-flight shock cell noise. J Sound Vib 11(4):411–420

    Article  Google Scholar 

  15. Jordan P, Colonius T (2013) Wave packets and turbulent jet noise. Annu Rev Fluid Mech 45:173–195

    Article  MathSciNet  Google Scholar 

  16. Kerechanin CW, Samimy M, Kim JH (2001) Effects of nozzle trailing edges on acoustic field of supersonic rectangular jet. AIAA 39(6):1065–1070

    Article  Google Scholar 

  17. Kim JH, Samimy M (1999) Mixing enhancement via nozzle trailing edge modifications in a high-speed rectangular jet. Phys Fluids 11(9):2731–2742

    Article  Google Scholar 

  18. Krothapalli A, Hsia Y, Baganoff D, Karamcheti K (1986) The role of screech tones in mixing of an underexpanded rectangular jet. J Sound Vib 106(1):119–143

    Article  Google Scholar 

  19. Kuo CW, Veltin J, McLaughlin DK (2014) Acoustic measurements of models of military-style supersonic nozzle jets. Chin J Aeronaut 27(1):23–33

    Article  Google Scholar 

  20. Mancinelli M, Jaunet V, Jordan P, Towne A (2019) Screech-tone prediction using upstream-travelling jet modes. Exp Fluids 60:22

    Article  Google Scholar 

  21. Norum T (1982) Screech suppression in supersonic jets. In: 20th Aerospace Sciences Meeting, AIAA-82-0050

  22. Ponton MK, Seiner JM (1992) The effects of nozzle exit lip thickness on plume resonance. J Sound Vib 154(3):531–549

    Article  Google Scholar 

  23. Powell A (1953) On the mechanism of choked jet noise. In: Proceedings of the Physical Society. Section 12B, vol 66, pp 1039–1057

  24. Raman G (1997) Screech tones from rectangular jets with spanwise oblique shock-cell structures. J Fluid Mech 330:141–168

    Article  Google Scholar 

  25. Raman G, Rice E (1994) Mixing and noise benefit versus thrust penalty in supersonic jets using impingement tones. In: 30th joint propulsion conference and exhibit. AIAA-94-2955

  26. Raman G (1999) Supersonic jet screech: half-century from Powell to the present. J Sound Vib 225(3):543–571

    Article  Google Scholar 

  27. Rice E, Taghavi R (1992) Screech noise source structure of a supersonic rectangular jet. In: 30th Aerospace Sciences Meeting and Exhibit. AIAA-92-0503

  28. Samimy M, Kim JH, Clancy P (1997) Supersonic jet noise reduction and mixing enhancement through nozzle trailing edge modifications. In: 35th Aerospace Sciences Meeting and Exhibit, AIAA-97-0146

  29. Sang YH (2013) Passive control of supersonic rectangular jets through boundary layer swirl. Int J Turbo Jet-Engines 30(2):199–216

  30. Seiner J, Manning J, Ponton M (1988) Dynamic pressure loads associated with twin supersonic plume resonance. AIAA 26(8):954–960

    Article  Google Scholar 

  31. Semlitsch B, Malla B, Gutmark EJ, Miháescu M (2020) The generation mechanism of higher screech tone harmonics in supersonic jets. J Fluid Mech 893(A9):1–13

    MathSciNet  MATH  Google Scholar 

  32. Shen H, Tam CKW (2000) Effects of jet temperature and nozzle-lip thickness on screech tones. AIAA 38(5):762–767

    Article  Google Scholar 

  33. Sinha A, Rodríguez D, Brès GA, Colonius T (2014) Wavepacket models for supersonic jet noise. J Fluid Mech 742:71–95

    Article  Google Scholar 

  34. Srinivasan K, Rathakrishnan E (2001) A simple mobile anechoic chamber for experiments in jet acoustics. Int J Turbo Jet Engines 18:59–64

    Article  Google Scholar 

  35. Tam CKW (1995) Supersonic jet noise. Annu Rev Fluid Mech 27:17–43

    Article  Google Scholar 

  36. Tam CKW, Shen H, Raman G (1997) Screech tones of supersonic jets from bevelled rectangular nozzles. AIAA 35(7):1119–1125

    Article  Google Scholar 

  37. Tam CKW (1998) Jet noise: since 1952. Theor Comput Fluid Dyn 10:393

    Article  Google Scholar 

  38. Tam CKW, Viswanathan K, Ahuja KK, Panda J (2007) The sources of jet noise: experimental evidence. In: 28th AIAA Aeroacoustics Conference, AIAA 2007-3641

  39. Tam CKW, Parrish SA, Viswanathan K (2014) Harmonics of jet screech tones. AIAA 52(11):2471–2479

    Article  Google Scholar 

  40. Walker SH, Thomas FO (1997) Experiments characterizing nonlinear shear layer dynamics in a supersonic rectangular jet undergoing screech. Phys Fluids 9(9):2562–2579

    Article  Google Scholar 

Download references

Acknowledgements

The authors would like to acknowledge the University Grants Commission (India) for providing financial support (Nos. F MRP 6150/15, SERO/UGC) for the research. The authors would also like to thank the Center for Research and Consultancy of Rajalakshmi Engineering College (Chennai, India) for its support.

Funding

Funding was provided by UGC-DAE Consortium for Scientific Research, University Grants Commission (Grant Nos. F MRP 6150/15, SERO/UGC).

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Correspondence to Surendra Bogadi.

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Technical Editor: Andre Cavalieri.

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Bogadi, S., Sridhar, B.T.N. Acoustic characteristics of supersonic rectangular jets issuing from nozzles with diagonal expansion ramps. J Braz. Soc. Mech. Sci. Eng. 43, 572 (2021). https://doi.org/10.1007/s40430-021-03286-w

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