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A stable moving particle semi-implicit method with renormalized Laplacian model improved for incompressible free-surface flows
- Source :
- Computer Methods in Applied Mechanics and Engineering. 356:199-219
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- We present a stable and accurate moving particle semi-implicit (MPS) for free-surface flows. For simulating free-surface flows, previous formulations using renormalized procedure is only applicable to interior particles. Poor accuracy of the free-surface particle in turn contaminate the overall solution accuracy. In this study, dummy particle is introduced to stabilize the renormalized Laplacian model on free surface and to enforce the free-surface condition. The proposed renormalized Laplacian model enables accurate pressure calculation for both internal and free-surface particles. Modification also includes a modified gradient model in which linear consistency is guaranteed and stability is enhanced by introducing dummy particle. The proposed MPS scheme provides a more accurate and stable simulation of incompressible free surface flows. Several two-dimensional numerical simulations are presented to demonstrate the enhanced performance of the proposed MPS method.
- Subjects :
- Physics
Mechanical Engineering
Mathematical analysis
Computational Mechanics
General Physics and Astronomy
010103 numerical & computational mathematics
01 natural sciences
Stability (probability)
Computer Science Applications
010101 applied mathematics
Mechanics of Materials
Consistency (statistics)
Free surface
Turn (geometry)
Compressibility
Particle
0101 mathematics
Laplace operator
Subjects
Details
- ISSN :
- 00457825
- Volume :
- 356
- Database :
- OpenAIRE
- Journal :
- Computer Methods in Applied Mechanics and Engineering
- Accession number :
- edsair.doi...........a8aab3cc574da51b250b81eacbab1ece