A modified ghost fluid method for strong shock wave impacting on material interface

CHEN Rong-san; SHENG Wan-cheng

doi:10.11883/1001-1455(2008)02-0144-05

Volume 28 Issue 2

Sep. 2014

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Article Navigation > Explosion And Shock Waves > 2008 > 28(2): 144-148

PENG Qi-xian, LIU Jun, LI Ze-ren, DENG Xiang-yang, KONG Fan-long. An experimental study of increasing the driving power of explosive with restricted charge[J]. Explosion And Shock Waves, 2006, 26(5): 448-451. doi: 10.11883/1001-1455(2006)05-0448-04

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CHEN Rong-san, SHENG Wan-cheng. A modified ghost fluid method for strong shock wave impacting on material interface[J]. Explosion And Shock Waves, 2008, 28(2): 144-148. doi: 10.11883/1001-1455(2008)02-0144-05

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A modified ghost fluid method for strong shock wave impacting on material interface

doi: 10.11883/1001-1455(2008)02-0144-05

1.
Department of Mathematics, Shanghai University, Shanghai 200444, China

Publish Date: 2008-03-25

Abstract

Abstract

A modified ghost fluid method is developed to avoid the oscillations of pressure and velocity at the interface when the original ghost fluid method (GFM) is applied to a strong shock wave impacting on a material interface. The pressure and velocity of the ghost fluid are replaced respectively by the pressure and velocity of the interface which are obtained by solving a Riemann problem, the density of the ghost fluid is gained by extrapolating the entropy constant. The modified GFM keeps to the simplicity of the original GFM. Numerical tests are carried out by using the modified GFM for a one-dimensional strong shock wave impacting on the gas-gas, gas-liquid interfaces and a jet impacting on the gas-liquid interface. The satisfactory results are achieved.
- fluid mechanics,
- modified ghost fluid method,
- Riemann problem,
- strong shock wave

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