The effectiveness of using helium-air mixture jets to simulate heated jets at both subsonic and supersonic velocities is investigated. Particular emphasis is placed on replicating the aeroacoustic properties of heated jets. Acoustic directivity and spectral measurements of helium-air mixture jets are compared to existing heated jet data. Results typically indicate agreement within 2 dB with some discrepancy attributable to facility and run condition differences. In addition, mean flowfield measurements indicate a shortening of the potential core and a slight decrease in jet spreading with the addition of helium – the same trends observed for heated jets. The similarities in acoustic and mean flow behavior indicate that helium-air mixture jet experiments provide a viable low-cost alternative to heated jet experiments.
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References
1.
CorrsinS.Investigation of the flow in an axially symmetrical heated jet of air. N.A.C.A. ACR 3l23, 1943.
2.
CorrsinS., and UberoiM. S.Further experiments on the flow and heat transfer in a heated turbulent jet. N.A.C.A. Report, no. 998, 1950.
3.
MorfeyC. L.Amplification of aerodynamic noise by convected flow inhomogeneities. Journal of Sound and Vibration, 31, December 1973, pp. 391–397.
4.
TannaH. K.DeanP. D., and FisherM. J.The influence of temperature on shock-free supersonic jet noise. Journal of Sound and Vibration, 39 (4), 1975, pp. 429–460.
5.
HochR. G.DuponchelB. J.CockingB. J., and BryceW. D.Studies of the influence of density on jet noise. Journal of Sound and Vibration, 28, 1973, pp. 649–668.
6.
SeinerJ. M.PontonM. K.JansenB. J., and LagenN. T.The effects of temperature on supersonic jet noise emission. German Society for Aeronautics and Astronautics (DGLR)/AIAA Paper 92-02-046, 14th Aeroacoustics Conference, Aachen, Germany, 1992.
7.
TamC.K.W.ChenP., and SeinerJ. M.Relationship between instability waves and noise of high-speed jets. AIAA Journal, 30, (7), 1992, pp. 1747–1752.
8.
ViswanathanK.Aeroacoustics of hot jets. AIAA Paper 2002–2481, 8th AIAA/CEAS Aeroacoustics Conference, Breckenridge, CO, 2002.
9.
ChanY. Y. and WestleyR.Directional acoustic radiation generated by spatial jet instability. CASI Transactions, 6, 1973, pp. 36–41.
10.
KinzieK. W. and McLaughlinD. K.Measurements of supersonic helium-air mixture jets. AIAA Journal, 37, (11), 1999, pp. 1363–1369.
11.
PapamoschouD.Mach wave elimination in supersonic jets. AIAA Journal, 35, (10), October 1997, pp. 1604–1611.
12.
SmithD.J., and JohannesenMN. H.The effects of density on subsonic jet noise. IUTAM Symposium on Aero and Hydro-Acoustics, Lyon, July 1985.
13.
TessonV.DotyM. J., and McLaughlinD. K.Experimental investigation of core noise and jet noise using a small gas turbine engine. AIAA Paper 2002–2458, 8th AIAA/CEAS Aeroacoustics Conference, Breckenridge, CO, 2002.
14.
PowellA.On the noise emanating from a two-dimensional jet above the critical pressure. Aeronautical Quarterly, 4, 1953, pp. 103–120.
15.
PowellA.A survey of experiments on jet noise. Aircraft Engineering, 26, 1954, pp. 2–9.
16.
DotyM. J., An Experimental Investigation of the Aeroacoustic Properties of High-Speed, Helium/Air Mixture Axisymmetric Jets, PhD Thesis, The Pennsylvania State University, 2002.
17.
BassH. E.SutherlandL.C.BlackstockD. T., and HesterD. M.Atmospheric absorption of sound: Further developments. Journal of the Acoustical Society of America, 97 (1), 1995, pp. 680–683.
18.
BassH. E.SutherlandL.C.BlackstockD. T., and HesterD. M.Erratum: Atmospheric absorption of sound: Further developments. Journal of the Acoustical Society of America, 99 (2), 1996, pp. 1249.
19.
PetitjeanB. and McLaughlinD. K.Experiments on the nonlinear propagation of noise from supersonic jets. AIAA Paper 2003–3127, 9th AIAA/CEAS Aeroacoustics Conference, Hilton Head, SC, 2003.
20.
KinzieK. W.Aeroacoustic Properties of Moderate Reynolds Number Elliptic and Rectangular Supersonic Jets, PhD Thesis, The Pennsylvania State University, 1995.
21.
TannaH. K.DeanP. D., and BurrinR. H.The Generation and Radiation of Supersonic Jet Noise, Volume III Turbulent Mixing Noise Data. Air Force Aero-Propulsion Laboratory, Technical Report AFAPL-TR-76-65, September 1976.
22.
NorumT.NASA Langley Research Center, Jet Noise Laboratory, unpublished data, 1999.
23.
BurrinR. H.LushP. A., and WynneG. A., The Generation and Radiation of Supersonic Jet Noise, Volume V Appendix I. Air Force Aero-Propulsion Laboratory, Technical Report AFAPL-TR-72, July 1972.
24.
ViswanathanK.Analysis of the two similarity components of turbulent mixing noise. AIAA Journal, 40, (9), 2002, pp. 1735–1744.
25.
SeinerJ. M. and PontonM. K.Aeroacoustic data for high Reynolds number supersonic axisymmetric jets. NASA Tech. Memo 86296, January 1985.
26.
KinzieK. W.NASA Langley Research Center, Jet Noise Laboratory, private communication, 2002.
27.
YuJ. C., and DosanjhD. S.Noise field of a supersonic Mach 1.5 cold model jet. The Journal of the Acoustical Society of America, 51, (5), 1972, pp. 1400–1410.
28.
DotyM. J. and McLaughlinD. K.Supersonic helium/air mixture jets with comparison to heated jet experiments. AIAA Paper 2001–2186, 7th AIAA/CEAS Aeroacoustics Conference, Maastricht, The Netherlands, 2001.
29.
ParthasarathyS. P.CuffelR. F., and MassierP. F.Separation of core noise and jet noise. AIAA Paper 79–0589, 5th Aeroacoustics Conference, Seattle, WA, March 1979.
30.
TamC. K. W. and ZamanK. B. M. Q.Subsonic jet noise from nonaxisymmetric and tabbed nozzles. AIAA Journal, 38, 2000, pp. 592–599.
31.
TamC. K. W.GolebiowskiM., and SeinerJ. M.On the two components of turbulent mixing noise form supersonic jets. AIAA Paper 96–1716, 1996.
32.
LauJ. C.Effects of exit Mach number and temperature on mean-flow and turbulence characteristics in round jets. Journal of Fluid Mechanics, 105, 1981, pp. 193–218.
