한국전산유체공학회지 (Journal of computational fluids engineering)

한국전산유체공학회 (Korean Society of Computational Fluids Engineering)
권호 표지
DOI QR코드

DOI QR Code

핵폭발 초기 화구에 대한 수치해석

NUMERICAL SIMULATION OF INITIAL FIREBALL AFTER NUCLEAR EXPLOSION

  • 송승호 (연세대학교 계산과학공학과) ;
  • 이창훈 (연세대학교 계산과학공학과) ;
  • 최정일 (연세대학교 계산과학공학과)
  • Song, Seungho (Dept. of Computational Science and Engineering, Yonsei Univ.) ;
  • Lee, Changhoon (Dept. of Computational Science and Engineering, Yonsei Univ.) ;
  • Choi, Jung-Il (Dept. of Computational Science and Engineering, Yonsei Univ.)
  • 투고 : 2014.09.23
  • 심사 : 2014.12.03
  • 발행 : 2014.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

We develop a numerical method for solving the radiation hydrodynamic equations in one-dimensional spherical coordinates. The present method is validated through simulations of shock tube, thermal radiative diffusion and point explosion problems. The transient growth of the fireball is investigated by varying explosion yields. The present study clearly captures well-known breakaway phenomena related to the shock separation between pressure waves and thermal shock front. The fireball radius at the breakaway point is roughly increased by the yield to power of 0.4.

키워드

참고문헌

  1. 1977, Glasstone, S. and Dolan, P.J., "The Effects of Nuclear Weapons," US Department of Defense.
  2. 2010, Needham, C.E., Blast Waves, Springer-Verlag.
  3. 1995, Symbalisty, E.M., Zinn, J. and Whitaker, R.W., "RADFLO Physics and Algorithm," LA-12988-MS, Los Alamos National Laboratory.
  4. 1972, Zinn, J., "A Finite Difference Scheme for Time-Dependent Spherical Radiation Hydrodynamics Problems," Journal of Computational Physics, Vol.13, No.4, pp.569-590.
  5. 2001, Bates, J.W., Knoll, D.A., Rider, W.J., Lowrie, R.B. and Mousseau, V.A., "On Consistent Time-Integration Methods for Radiation Hydrodynamics in the Equilibrium Diffusion Limit: Low-Energy-Density Regime," Journal of Computational Physics, Vol.167, No.10, pp.99-130. https://doi.org/10.1006/jcph.2000.6661
  6. 2010, Kadioglu, S.Y. and Knoll, D.A. "A Fully Second Order Implicit/Explicit Time Integration Technique for Hydrodynamics plus Nonlinear Heat Conduction Problems," Journal of Computational Physics, Vol.229, No.9, pp.3237-3249. https://doi.org/10.1016/j.jcp.2009.12.039
  7. 2009, Toro, E.F., "Riemann Solvers and Numerical Methods for Fluid Dynamics," Chap.9, 3rd Edition, Springer-Verlag.
  8. 1979, Barenblatt, G.I., "Similarity, Self-Similarity and Intermediate Asymptotics, Consultants Bureau," Plenum Press.
  9. 1991, Reinicke, P. and Meyer-ter-Vehn, J., "The Point Explosion with Heat Conduction," Physics of Fluids, Vol.A3, No.7, pp.1807-1818.
  10. 1999, Lowrie, R.B., Morel, J.E. and Hittinger, J.A., "The Coupling of Radiation and Hydrodynamics," The Astrophysical Journal, Vol.521, pp.432-450. https://doi.org/10.1086/307515
  11. 1984, Colella, P. and Woodward, P.R., "The Piecewise Parabolic Method(PPM) for Gas-dynamical Simulations," Journal of Computational Physics, Vol.54, No.1, pp.174-201. https://doi.org/10.1016/0021-9991(84)90143-8