This paper proposes a new non-oscillatory energy-splitting conservative algorithm for computing multi-fluid flows in the Eulerian framework. In comparison with existing multi-fluid algorithms in the literature, it is shown that the mass fraction model with isobaric hypothesis is a plausible choice for designing numerical methods for multi-fluid flows. Then we construct a conservative Godunov-based scheme with the high order accurate extension by using the generalized Riemann problem solver, through the detailed analysis of kinetic energy exchange when fluids are mixed under the hypothesis of isobaric equilibrium. Numerical experiments are carried out for the shock-interface interaction and shock-bubble interaction problems, which display the excellent performance of this type of schemes and demonstrate that nonphysical oscillations are suppressed around material interfaces substantially.
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A non-oscillatory energy-splitting method for the computation of compressible multi-fluid flows
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April 2018
Research Article|
March 15 2018
A non-oscillatory energy-splitting method for the computation of compressible multi-fluid flows
Special Collection:
Papers Selected from the Seventh International Symposium on Physics of Fluids
Xin Lei
;
Xin Lei
a)
1
School of Mathematical Sciences, Beijing Normal University
, Beijing 100875, People’s Republic of China
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Jiequan Li
Jiequan Li
b)
2
Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics
, Beijing 100088, People’s Republic of China
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a)
Electronic mail: xinlei@mail.bnu.edu.cn
b)
Author to whom correspondence should be addressed: li_jiequan@iapcm.ac.cn
Physics of Fluids 30, 040906 (2018)
Article history
Received:
October 30 2017
Accepted:
December 27 2017
Citation
Xin Lei, Jiequan Li; A non-oscillatory energy-splitting method for the computation of compressible multi-fluid flows. Physics of Fluids 1 April 2018; 30 (4): 040906. https://doi.org/10.1063/1.5011093
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