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| A Technique of Reduction Pressure Fluctuation for Moving-Particle Semi-implicit Method |
| SUN Xue-Yao-a, ZHANG Huai-Xin-a, b , PAN Xu-Jie-a |
| （a. School of Naval Architecture, Ocean and Civil Engineering;b. State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China） |
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Abstract A common defect of movingparticle semi-implicit method and other mesh free method such as SPH is that the pressure fluctuation is obvious and hard to resolve. A new method was proposed to reduce pressure fluctuation and has good effect. Divergence-free condition representing fluid incompressible is used to calculate pressure smoothly, then time average is used to deal with the calculation. There are two kinds of cases being numerically simulated which are water collapse and ship roll sloshing. Comparing to the original MPS method, the result from the new method is real, so that the new method has good practicability and reliability.
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Received: 20 July 2010
Published: 31 October 2011
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