Conservative particle weighting scheme for particle collision in gas-solid flows

He, Yakun

doi:10.1016/j.ijmultiphaseflow.2016.03.008

Cited by 5 publications

(2 citation statements)

References 50 publications

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“…e calculation results are used in some numerical calculations of the GRP format of the nonconservative ideal fluid mechanics equations, and some numerical calculations and analyses of the GRP format of the nonconservative ideal fluid mechanics equations are obtained [14].…”

Section: Parallel Solving Of Linear Systemsmentioning

confidence: 99%

Numerical Calculations of the GRP Scheme for Nonconservative Ideal Fluid Mechanics Equations Relying on Parallel Calculation of Multifluid Grids

Zhan

2021

Advances in Multimedia

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In order to solve the numerical method of nonconservative ideal hydrodynamics equations, the viscous perturbation technique for solving nonconservative hydrodynamics equations is improved and tested by solving the Riemann problem. The calculation of nonconservative ideal fluid mechanics is based on the GRP format. This article aims at the calculation method of nonconservative ideal fluid mechanics in the GRP format. Riemann and the corresponding periodic vortex are processed. The multifluid network processing method in the article is compared with the current method. The result can prove that this format can be used to solve the nonconservative ideal fluid dynamics equation of multiple values in the GRP format group, its computing power is strong, and the result of the solution is accurate.

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Section: Parallel Solving Of Linear Systemsmentioning

confidence: 99%

Numerical Calculations of the GRP Scheme for Nonconservative Ideal Fluid Mechanics Equations Relying on Parallel Calculation of Multifluid Grids

Zhan

2021

Advances in Multimedia

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“…Apart from DSMC and PIC methods, various strategies for controlling the number of particles have been implemented in other particle-based gas flow simulation methods, such as the ellipsoidal statistical Bhatnagar-Gross-Krook model [45]. Similar control mechanisms have also been proposed for simulating solid-gas flows in which, the solid phase is modelled using the DSMC method [46,47].…”

mentioning

confidence: 99%

Improving computational efficiency in DSMC simulations of vacuum gas dynamics with a fixed number of particles per cell

Sabouri,

Zakeri,

Ebrahimi

2024

Phys. Scr.

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The present study addresses the challenge of enhancing computational efficiency without compromising accuracy in numerical simulations of vacuum gas dynamics using the direct simulation Monte Carlo (DSMC) method. A technique termed “fixed particle per cell (FPPC)” was employed, which enforces a fixed number of simulator particles across all computational cells. The proposed approach eliminates the need for real-time adjustment of particle weights during simulation, reducing calculation time. Using the SPARTA solver, simulations of rarefied gas flow in a micromixer and rarefied supersonic flow around a cylinder were conducted to validate the proposed approach. Results demonstrate that the FPPC concept effectively reduces computational costs while yielding results comparable to conventional DSMC implementations. Additionally, the application of local grid refinement coupled with the FPPC concept is investigated. The results show that integrating local grid refinement with the FPPC concept enables accurate prediction of flow behavior in regions with significant gradients. These findings highlight the efficacy of the proposed approach in improving the accuracy and efficiency of numerical simulations of complex vacuum gas dynamics at a reduced computational cost.

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An adaptable direct simulation Monte Carlo method for simulating acoustic agglomeration of solid particles

Fan

Yan³

et al. 2022

Chemical Engineering Science

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Conservative particle weighting scheme for particle collision in gas-solid flows

Cited by 5 publications

References 50 publications

Numerical Calculations of the GRP Scheme for Nonconservative Ideal Fluid Mechanics Equations Relying on Parallel Calculation of Multifluid Grids

Numerical Calculations of the GRP Scheme for Nonconservative Ideal Fluid Mechanics Equations Relying on Parallel Calculation of Multifluid Grids

Improving computational efficiency in DSMC simulations of vacuum gas dynamics with a fixed number of particles per cell

An adaptable direct simulation Monte Carlo method for simulating acoustic agglomeration of solid particles

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