한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제18권3호
  • /
  • Pages.34-39
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  • 2014
  • /
  • 1226-6027(pISSN)
  • /
  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
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Center-body 디퓨져 형상설계를 위한 수치적연구

Numerical Study for Design of Center-body Diffuser

  • Kim, Jong Rok (R&D Center, Aerospace Division, Korean Air) ;
  • Kim, Jae-Soo (Department of Aerospace Engineering, Chosun University)
  • 투고 : 2012.11.27
  • 심사 : 2014.05.08
  • 발행 : 2014.06.01
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초록

center-body디퓨져에 대한 형상 설계 요소를 분석하고 수치적 기법을 통한 설계형상 변수를 구성하였다. 수치기법으로는 Center-body 디퓨져의 내부유동해석을 위하여 2차원 축대칭 Navier-Stokes equation와 $k-{\epsilon}$ 난류모델을 사용하였다. 또한 center-body디퓨져의 시동압력과 진공도 및 형상설계변수에 대해서 2차목 디퓨져와 비교하였다. 냉각시스템의 성능향상 방안으로 CBD의 원추선단에 역류제트를 활용한 TPS시스템의 개념을 제시하였다.

A study is analyzed on the design factor of center-body diffuser and performed on conceptual design of center-body diffuser with computational fluid dynamic. The flow field of center-body diffuser is calculated using axisymmetric two-dimensional Navier-Stokes equation with $k-{\epsilon}$ turbulencemodel. The center-body diffuser is compared with second throat exhaust diffuser in terms of starting pressure, the degree of vacuum pressure and the design factors. The counter flow jet on cone-tip of the center-body is applied for thermal protection system in the center-body diffuser.

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참고문헌

  1. Schafer, K., Zimmermann, H. and Kruehsel, G., "Altitude Simulation Bench for VINCI Engine," 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Jul. 2003.
  2. Stinnett W.D., "Centerbody Diffuser Study" AEC-NASA Space Nuclear Propulsion Office, Report No. RN-S-0243, Oct. 1965.
  3. Christopher L.C., "High Speed Flight Vehic le Structures : An Overview," Journal of Aircraft, Vol. 41, No. 5, pp. 978-985, 2004. https://doi.org/10.2514/1.3880
  4. Park, B.H., Lim J.H. and Yoon, W.S, "Fuid dynamics in starting and terminating transients of zero-secondary flow ejector," international journal of hear and fluid flow, Vol. 29, pp. 327-339, Feb. 2008. https://doi.org/10.1016/j.ijheatfluidflow.2007.06.008
  5. Park, B.H., Lee J.H. and Yoon, W.S., " Studies on the starting transient of a straight cylindrical supersonic exhaust diffuser," international journal of hear and fluid flow, Vol. 29, pp. 1369-1379, Oct. 2008. https://doi.org/10.1016/j.ijheatfluidflow.2008.04.006
  6. Sankaran, S., Satyanarayana, T.N.V., Anna malai, K., Visvanathan, K., Babu, V. and Sundararajan, T., "CFD Analysis for Sim ulated Altitude Testing of Rocket Motors," Canadian Aeronautics and Space Journal, Vol. 48, No. 2, 2002.
  7. Fortini, A., "Performance Investigation of a Nonpumping Rocket-Ejector System for Altitude Simulation," NASA TN D-257, 1959.
  8. William L. J., "Experimental Study of Zero -Flow Ejectors Using Gaseous Nitrogen," NASA-TD-203, 1960.
  9. Fluent 14.0, FLUENT Inc.
  10. Fortini, A. and Nucci, L.M., "Preliminary inves tigation of a new type of supersonic inlet," Langley Aeronautical Laboratory, Report-1104, 1965.
  11. Kruehsel, G., Schafer, K., Zimmermann, H. and Pauly, C., "Operation of VINCI Altitude Simulation Test Bench P4.1," Aerospace testing, Munich, Germany, 2008.