Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Study on Transient Analysis of Hot Gas Valve with Pintle

핀틀이 적용된 고온 가스 밸브의 비정상상태 해석 기법에 관한 연구

  • Lee, Kyungwook (Department of Mechanical Engineering, Hanbat National University) ;
  • Heo, Seonuk (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kwon, Sejin (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Jongkwang (Department of Mechanical Engineering, Hanbat National University)
  • Received : 2017.11.22
  • Accepted : 2018.01.30
  • Published : 2018.04.01
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Abstract

A numerical simulation was conducted to establish the analysis methods of the unsteady conjugated heat transfer with a hot gas valve. Two methods are proposed to reduce the computational cost and analysis time of the unsteady conjugate heat transfer; namely, the multi-section analysis method and the one-way analysis method. The multi-section analysis method exhibits relatively high reliability. In the one-way analysis method, the unsteady conjugate heat transfer from the fluid domain to the solid domain was simulated from the analysis results of the steady-state flowfield. The incipient accuracy of the analysis results obtained by the one-way analysis method was slightly lower than that of the results obtained by the multi-section analysis method. However, the discrepancy became smaller with time, as the analysis progressed.

고온밸브의 비정상상태 복합열전달 해석 기법을 확립하기 위한 연구를 수행하였다. 장시간 작동하는 고온밸브의 특성과 해석의 경제성을 고려하여 두 가지 해석 기법을 제시하였다. 발달순서에 따라 구간을 나누고 구간별로 시간간격을 증가시켜 해석을 수행하는 다 구간 해석 기법과 정상상태 유동장 해석결과를 비정상상태 해석의 초기 값으로 사용하는 one-way 해석 기법을 제시 하였다. 다 구간 해석 기법의 경우 신뢰도가 높은 해석이 수행 가능하지만 경제적인 측면에서 설계 단계의 해석 기법으로는 부적합하였다. one-way 해석 기법의 경우 초기 신뢰도는 떨어지나 기민한 설계 변수 연구가 가능한 경제적인 해석 수행이 가능하였다.

Keywords

References

  1. "DACS", retrieved 03 Nov. 2015 from http://missiledefenseadvocacy.org/.
  2. Kim, J.K., "Study on the effects of pintle shapes and position in nozzle flow field, and thrust in a solid rocket motor with pintle nozzle," Ph. D. Thesis, Departmemt of Mechanical Engineering, Chungnam National University, Daejeon, Korea, 2011.
  3. Park, H.J., "Numerical Study on Dynamic Characteristics of Pintle Nozzle for Variable Thrust," Master's Thesis, School of Aerospace and Mechanical Engineering, Korea Aerospace University, Goyang-si, Korea, 2011.
  4. Lee, J.H., "A study of the Static and Dynamic characteristic of Pintle-perturbed Conical Nozzle Flows," Ph. D. Thesis, Departmemt of Mechanical Engineering, Yonsei University, Seoul, Korea, 2012.
  5. Lee, Y.W., "Computational Analysis of Pintle Nozzle for DACS(Divert andAttitude Control System)," Master's Thesis, Department of Aerospace Engineering, Chungnam National University, Daejeon, Korea, 2010.
  6. Jin, J.K., Ha, D.S. and Oh, S.J., "Experimental Study and Performance Analysis of the Solid Rocket Motor with Pintle Nozzle," Journal of the korean Society of Propulsion Engineers, Vol. 18, No. 5, pp. 19-28, 2014. https://doi.org/10.6108/KSPE.2014.18.5.019
  7. Kam, H.D., Ha D.S., Park, Y.S., Lee, J.W. and Cho, S.H., "An Ablation Characteristics for the Pintle-nozzle," 2014 KSPE Spring Conference, Seoul, Korea, pp.290-293, May 2014.
  8. Lee, K.W., Heo, S.W., Kwon, S.J. and Lee, J.K., "Study on Flow Analysis of Hot Gas Valve with pintle." Journal of the korean Society for aeronautical and Space Sciences, Vol. 19, No. 6, pp. 19-25, 2015.
  9. Kim, J.K. and Park J.H., "Thrust modulation performance analysis of pintle-nozzle motor," Journal of the korean Society for aeronautical and Space Sciences, Vol. 37, No. 4, pp. 392-398, 2009. https://doi.org/10.5139/JKSAS.2009.37.4.392
  10. Lim, S.T., Kim, J.K., Kang, Y.K., Kim, H.W. and Kim, Y.C., "Perspective on the Hot Component for Rocket Nozzle and Thruster," 2008 KSPE Fall Conference, Daejeon, Korea, pp. 67-71, Nov. 2008.