A coupled SDPH-FVM method for gas-particle multiphase flow: Methodology

作者：Chen, Fuzhen^*; Qiang, Hongfu; Zhang, Han; Gao, Weiran

来源：International Journal for Numerical Methods in Engineering, 2017, 109(1): 73-101.

DOI：10.1002/nme.5279

• meshfree methods
• particle methods
• fluid-solid systems

This paper describes a novel methodology that combines smoothed discrete particle hydrodynamics (SDPH) and finite volume method (FVM) to enhance the effective performance in solving the problems of gas-particle multiphase flow. To describe the collision and fluctuation of particles, this method also increases a new parameter, namely, granular temperature, according to the kinetic theory of granular flow. The coupled framework of SDPH-FVM has been established, in which the drag force and pressure gradient act on the SDPH particles and the momentum sources of drag force are added back onto the FVM mesh. The proposed technique is a coupled discrete-continuum method based on the two-fluid model. To compute for the discrete phase, its SDPH is developed from smoothed particle hydrodynamics (SPH), in which the properties of SPH are redefined with some new physical quantities added into the traditional SPH parameters, so that it is more beneficial for SDPH in representing the particle characteristics. For the continuum phase, FVM is employed to discretize the continuum flow field on a stationary grid by capturing fluid characteristics. The coupled method exhibits strong efficiency and accuracy in several two-dimensional numerical simulations.

• 出版日期2017-1-6
• 单位中国科学院声学研究所