Adaptive solution techniques for simulating underwater explosions and implosions

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Kadioglu S. Y., Sussman M.

JOURNAL OF COMPUTATIONAL PHYSICS, cilt.227, sa.3, ss.2083-2104, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 227 Sayı: 3
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1016/j.jcp.2007.10.019
  • Dergi Adı: JOURNAL OF COMPUTATIONAL PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2083-2104
  • Yıldız Teknik Üniversitesi Adresli: Hayır

Özet

Adaptive solution techniques are presented for simulating underwater explosions and implosions. The liquid is assumed to be an adiabatic fluid and the solution in the gas is assumed to be uniform in space. The solution in water is integrated in time using a semi-implicit time discretization of the adiabatic Euler equations. Results are presented either using a non-conservative semi-implicit algorithm or a conservative semi-implicit algorithm. A semi-implicit algorithm allows one to compute with relatively large time steps compared to an explicit method. The interface solver is based on the coupled level set and volurne-of-fluid method (CLSVOF) [M. Sussman, A second order coupled level set and volume-of-fluid method for computing growth and collapse of vapor bubbles, J. Comput. Phys. 187 (2003) 110-136; M. Sussman, E.G. Puckett, A coupled level set and volume-of-fluid method for computing 3D and axisymmetric incompressible two-phase flows, J. Comput. Phys. 162 (2000) 301-337]. Several underwater explosion and implosion test cases are presented to show the performances of our proposed techniques. (C) 2007 Elsevier Inc. All rights reserved.