Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지
DOI QR코드

DOI QR Code

Characteristics of the Transverse Fuel Injection into a Supersonic Crossflow using Various Injector Geometries

분사구 형상에 따른 초음속 유동장 내 수직 연료 분사 특성

  • Kim, Seihwan (Daewoo Shipbuilding & Marine Engineering Co., Ltd.) ;
  • Lee, Bok Jik (School of Mechanical Engineering, Gwangju Institute of Science and Technology) ;
  • Jeung, In-Seuck (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Lee, Hyoungjin (Department of Aerospace Engineering, Inha University)
  • Received : 2018.01.05
  • Accepted : 2018.03.26
  • Published : 2018.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, computational simulation was performed to investigate the characteristics of air/fuel mixing according to the shape of the injector exit when the transverse jet was injected into a supersonic flow. Non-reacting flow simulation was conducted with fixed mass flow rate and the same cross-sectional area. To validate the results, free stream Mach number and jet-to-crossflow memetum ratio are set to 3.38 and 1.4, respectively, which is same as the experimental condition. Further, separation region, structure of the under-expended jet, jet penetration height, and flammable region of hydrogen for five different injectors compared.

본 논문에서는 초음속 유동장 내 연료 수직 분사 조건에서 분사구의 형상에 따른 연료/공기 혼합 특성을 분석하고자 하였다. 이를 위해 동일한 분사구 출구 면적과 유량 조건에 대해 수소와 공기에 대한 비반응 유동장 전산 해석을 수행하였다. 해석 결과의 검증을 위하여 자유류 마하수 3.38, 제트-자유류 운동량 플럭스비 1.4 인 평판 분사 시험을 모의하였다. 5개의 서로 다른 형상을 갖는 분사구를 이용하여 형태에 따른 박리 구간, 분사 제트의 구조의 차이를 살펴보고 분사구 후류에서 수소의 침투 높이와 수소-공기의 혼합에 따른 가연 면적에 변화를 확인함으로써 분사구 형상에 따른 연료/공기 혼합 특성을 정량적으로 비교하였다.

Keywords

References

  1. Santiago, J. and Dutton, J., "Crossflow Vortices of a Jet Injected into a Supersonic Crossflow," AIAA Journal, Vol. 35, No. 5, pp. 915-917, 1997. https://doi.org/10.2514/2.7468
  2. Ben-Yakar, A., Kamel, M., Morris, C. and Hanson, R.K., "Experimental investigation of H2 transverse jet combustion in hypervelocity flows," 33rd Joint Propulsion Conference and Exhibit, Joint Propulsion Conferences, Seattle, WA, U.S.A., AIAA 1997-3019, July. 1997.
  3. Koo, B.S. and Kim, H.D., "Study of the air jet normally injected into supersonic stream," Journal of the Korean Society of Propulsion Engineers, Vol. 4, No. 4, pp. 42-49, 2000.
  4. Kim, K.M. and Baek, S.W., "Numerical Study on Injecton and Mixing of Secondary Gas into a Supersonic Stream," Journal of The Korean Society for Aeronautical & Space Sciences, Vol. 29, No. 2, pp. 10-19, 2001.
  5. Shin, H.B. and Lee, S.H., "Characteristics of Dual Transverse Injection in Supersonic Flow Fields I-Mixing Characteristics," Journal of The Korean Society for Aeronautical & Space Sciences, Vol. 30, No. 6, pp. 53-60, 2002. https://doi.org/10.5139/JKSAS.2002.30.6.053
  6. Tomioka, S., Jacobsen, L. S. and Schetz, J. A., "Sonic Injection from Diamond-Shaped Orifices into a Supersonic Crossflow," Journal of Propulsion and Power, Vol. 19, No. 1, pp. 104-114, 2003. https://doi.org/10.2514/2.6086
  7. Ben-Yakar, A., Mungal, M.G. and Hanson, R.K., "Time evolution and mixing characteristics of hydrogen and ethylene transverse jets in supersonic crossflows," Physics and Fluids, Vol. 18, No. 2, pp. 1-16, 2006.
  8. Won, S.H., Jeung, I.S. and Choi, J.Y., "Unsteady Three-Dimensional Analysis of Transverse Fuel Injection into a Supersonic Crossflow using Detached Eddy Simulation Part I : Non-Reacting Flowfield," Journal of The Korean Society for Aeronautical & Space Sciences, Vol. 37, No. 9, pp. 863-878, 2009. https://doi.org/10.5139/JKSAS.2009.37.9.863
  9. Won, S.H., Jeung, I.S., Parent, B., and Choi, J.Y., "Numerical investigation of transverse hydrogen jet into supersonic crossflow using detached-eddy simulation," AIAA Journal, Vol. 48, No. 6, pp. 1047-1058, 2010. https://doi.org/10.2514/1.41165
  10. Menter, F.R., "Two-equation eddy-viscosity turbulence modeling for engineering applications", AIAA Journal, Vol. 32, No. 8, pp. 1598-1605, 1994. https://doi.org/10.2514/3.12149
  11. Won, S.H., Jeung, I.S. and Choi, J.Y., "Verification and Validation of the Numerical Simulation of Transverse Injection Jets using Grid Convergence Index," Journal of The Korean Society for Aeronautical & Space Sciences, Vol. 34, No. 4, pp. 53-62, 2006. https://doi.org/10.5139/JKSAS.2006.34.4.053
  12. Ogawa, H., "Effects of injection angle and pressure on mixing performance of fuel injection via various geometries for upstream-fuel-injected scramjets," Acta Astronautica, Vol. 128, pp. 485-498, 2016. https://doi.org/10.1016/j.actaastro.2016.08.008
  13. Aso, S., Okuyama, S., Kawai, M. and Ando, Y., "Experimental study on mixing phenomena in supersonic flows with slot injection," 29th Aerospace Sciences Meeting, Reno, NV, U.S.A., AIAA 91-0016, January, 1991.
  14. Rothstein, A.D. and Wantruck, P.J., "A study of the normal injection of hydrogen into a heated supersonicflow using planar laser-induced fluorescence," 28th Joint Propulsion Conference and Exhibit, Nashville, TN, U.S.A., AIAA 1992-3423, July, 1992.
  15. McDaniel, J.C. and Graves, J., "Laser-induced-fluorescence visualization of transverse gaseous injection in a nonreacting supersonic combustor," Journal of Propulsion and Power, Vol. 4, No. 6, pp. 591-597, 1988. https://doi.org/10.2514/3.23105
  16. Forster, L.E. and Engblom, W.A, "Computational of Transverse Injection into Supersonic Crossflow with Various Injector Orifice Geometries," 42nd AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, U.S.A., AIAA 2004-1199, Jan., 2004.
  17. Song, C.S., and Park, S.O., "Assessment of URANS and DES Simulations for Two-dimensional Backward Bacing Step Flow," Journal of Computational Fluids Engineering, Vol. 11, pp. 25-31, 2006.
  18. Hassan, Ez., Luke, E.A., Walters, K., Peterson, D.M, Eklund, D., Hagenmaier, M., "Computations of a Hydrogen-Fueled Scramjet Combustor on Locally Refined Mesh," Journal of Flow Turbulence Combust, Vol. 99 No. 2, pp. 437-459, 2017. https://doi.org/10.1007/s10494-017-9821-2