In this paper,we studied the characteristic of four kernel functions of Moving Particle Semi-implicit method (MPS).In order to find the dependence of pressure oscillation on kernel functions, the dam break problem was selected for as a benchmark.Results showed that proper value of a kernel function was required in the compact support region to smooth the pressure distribution. The value of the kernel function should approach zero when the particle distance was close to the edge of compact support region to avoid large replusive force.When the distance between particles was close to zero,the value of kernel function should be large enough to avoid particle clustering. At the same time,the kernel function should be simple to stabilize the simulation process and decrease the computational time.
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2017 25th International Conference on Nuclear Engineering
July 2–6, 2017
Shanghai, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5786-1
PROCEEDINGS PAPER
Study on Kernel Functions of Pressure Oscillation in MPS Method
Jiang Shengyao,
Jiang Shengyao
Tsinghua University, Beijing, China
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Yang Xingtuan,
Yang Xingtuan
Tsinghua University, Beijing, China
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Duan Riqiang
Duan Riqiang
Tsinghua University, Beijing, China
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Zhu Yue
Tsinghua University, Beijing, China
Sun Chen
Tsinghua University, Beijing, China
Jiang Shengyao
Tsinghua University, Beijing, China
Yang Xingtuan
Tsinghua University, Beijing, China
Duan Riqiang
Tsinghua University, Beijing, China
Paper No:
ICONE25-67721, V008T09A050; 7 pages
Published Online:
October 17, 2017
Citation
Yue, Z, Chen, S, Shengyao, J, Xingtuan, Y, & Riqiang, D. "Study on Kernel Functions of Pressure Oscillation in MPS Method." Proceedings of the 2017 25th International Conference on Nuclear Engineering. Volume 8: Computational Fluid Dynamics (CFD) and Coupled Codes; Nuclear Education, Public Acceptance and Related Issues. Shanghai, China. July 2–6, 2017. V008T09A050. ASME. https://doi.org/10.1115/ICONE25-67721
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