Chinese Journal of Theoretical and Applied Mechani ›› 2015, Vol. 47 ›› Issue (5): 830-838.DOI: 10.6052/0459-1879-14-412

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APPLICATION OF LAGRANGIAN BOUNDARY CONDITIONS BY CHARACTERISTICS METHOD USING TIME-LINE INTERPOLATION IN SPH

Gong Xiangfei1,2, Zhang Shudao2, Yang Jiming1   

  1. 1. University of Science and Technology of China, Hefei 230022, China;
    2. Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
  • Received:2014-12-24 Revised:2015-07-14 Online:2015-09-23 Published:2015-09-18
  • Supported by:

    The project was supported by the CAEP Project (2012B0201027, 2012B0201028, 2012A0201011, 2013A0101004, 2013A0201009).

Abstract:

Boundary conditions is an important research topic in the practical application of computational fluid dynamics. A new Lagrangian boundary conditions framework is constructed by characteristics method using time-line interpolation and is applied in SPH. Compared with methods within Euler framework this method is obvious and easily carrying out for the same formulations in inflow zone and in outflow zone whether for subsonic flow or supersonic flow. SPH numerical simulation in various wave inputs shows the feasibility of the method.

Key words:

time-line interpolation|method of characteristic|non-reflecting boundary conditions|Lagrangian boundary conditions|SPH

CLC Number: