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C.F. Miao¹ and Q.Z. Hou^1,2

¹State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, China
²School of Civil and Transportation Engineering, Qinghai Minzu University, Xining, China

doi:10.4203/ccc.2.2.13

C.F. Miao, Q.Z. Hou, "An SPH based Lagrangian particle model for transient convection-diffusion-reaction problems", in B.H.V. Topping, P. Iványi, (Editors), "Proceedings of the Eleventh International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 2, Paper 2.13, 2022, doi:10.4203/ccc.2.2.13

Keywords: reacting flow, smoothed particle hydrodynamics, QUICK, MTVDLF, convection dominated reacting problem.

Abstract

For numerical simulations of convection-dominated reacting flow problems governed by the convection-diffusion-reaction equations, the grid-based Eulerian methods may induce varying degrees of numerical dissipation or spurious oscillations. In this paper, the smooth particle hydrodynamics (SPH) method is applied to the autocatalytic reaction model with multicomponent reactants. For better comparison, three typical Eulerian methods are also introduced, including the high-resolution technique and the Superbee flux limiter, which is considered to be one of the most suitable methods for solving the convection-diffusion-reaction equations. Numerical results show that the Lagrangian particle algorithm has better numerical accuracy than traditional first- and second-order high-resolution methods. It can also correctly track the moving steep fronts without any numerical dispersion and spurious oscillations.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 2 PROCEEDINGS OF THE ELEVENTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: B.H.V. Topping and P. Iványi Paper 2.13 An SPH based Lagrangian particle model for transient convection-diffusion-reaction problems C.F. Miao¹ and Q.Z. Hou^1,2 ¹State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, China ²School of Civil and Transportation Engineering, Qinghai Minzu University, Xining, China doi:10.4203/ccc.2.2.13 Full Bibliographic Reference for this paper C.F. Miao, Q.Z. Hou, "An SPH based Lagrangian particle model for transient convection-diffusion-reaction problems", in B.H.V. Topping, P. Iványi, (Editors), "Proceedings of the Eleventh International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 2, Paper 2.13, 2022, doi:10.4203/ccc.2.2.13 Keywords: reacting flow, smoothed particle hydrodynamics, QUICK, MTVDLF, convection dominated reacting problem. Abstract For numerical simulations of convection-dominated reacting flow problems governed by the convection-diffusion-reaction equations, the grid-based Eulerian methods may induce varying degrees of numerical dissipation or spurious oscillations. In this paper, the smooth particle hydrodynamics (SPH) method is applied to the autocatalytic reaction model with multicomponent reactants. For better comparison, three typical Eulerian methods are also introduced, including the high-resolution technique and the Superbee flux limiter, which is considered to be one of the most suitable methods for solving the convection-diffusion-reaction equations. Numerical results show that the Lagrangian particle algorithm has better numerical accuracy than traditional first- and second-order high-resolution methods. It can also correctly track the moving steep fronts without any numerical dispersion and spurious oscillations. download the full-text of this paper (PDF, 7 pages, 793 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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