Comparison between smoothed dissipative particle dynamics and Voronoi fluid particle model in a shear stationary flow |
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| Institution: | 1. Key Lab of Low Dimension Quantum Structures and Quantum Control of Ministry of Education, College of Physics and Information Science, Hunan Normal University, Changsha 410081, PR China;2. School of Opto-Electronic Information, University of Electronic Science and Technology of China, Chengdu 610054, PR China;1. School of Science, Wuhan University of Technology, Wuhan, 430070, China;2. Department of Mathematics, Sun Yat-sen University, Guangzhou, 510275, China;3. Faculty of Information Technology, Macau University of Science and Technology, Macau, China |
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| Abstract: | We present a numerical comparison between two Lagrangian techniques for the simulation of fluids, smoothed dissipative particle dynamics (SDPD) and Voronoi fluid particle model. These methods reproduce the movement of the fluid with extensive particles. The main differences between these techniques are the volume definition and the implementation of the second derivatives. The Voronoi model is computationally more efficient than SDPD. For quasi-regular meshes, the Voronoi method is more accurate than SDPD but for arbitrary configurations its precision degrades. This means that the SDPD discrete versions of the second derivative operators are better than the ones used in the Voronoi method. |
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