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On enhancement of energy conservation properties of projection-based particle methods

机译:关于投影基础粒子方法节能特性的提高

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Abstract The paper investigates the energy conservation properties of two well-known projection-based particle methods, namely, MPS and ISPH methods. The enhancing effects of a set of refined schemes including Higher order Source term (HS), Higher order Laplacian (HL), Error Compensating Source (ECS), Dynamic Stabilizer (DS) and pressure Gradient Correction (GC) are shown through the simulations of a standing wave, oscillating drop and impacts of two fluid patches. The results highlight the superiority of corrected Taylor series consistent pressure gradient models for projection-based particle methods in providing accurate results with the best energy conservation as well as accurate reproductions of physical dissipations in fluid impact problems. Highlights Energy conservation properties of two projection-based particle methods, MPS and ISPH, are investigated. The enhancing effects of a set of refined schemes are illustrated. The energy conservation properties are shown to be directly linked with Taylor series consistency of pressure gradient models. The superiority of corrected Taylor series consistent pressure gradient models for enhanced energy conservation and physical dissipation reproduction is highlighted. ]]>
机译:<![cdata [ 抽象 纸张调查了两个众所周知的基于投影的粒子方法的节能特性,即MPS和ISPH方法。通过模拟示出了一组精细方案,包括高阶源术语(HS),更高阶拉普拉斯(HL),误差补偿源(ECS),动态稳定器(DS)和压力梯度校正(G​​C)的提高效果站立波,振荡下降和两个流体贴片的影响。结果突出了校正泰勒系列一致压力梯度模型的优越性,用于基于投影的颗粒方法,提供最佳节能的准确效果,以及流体影响问题中的物理耗散的精确复制。 < / ce:abstract-sec> 亮点 基于投影的粒子方法,MPS和Isph的节能属性,被调查。 增强效果示出了一组精细方案的s。 节能属性显示与泰勒串联压力梯度模型的一致性直接相关。 纠正泰勒系列的优势一致的压力梯度模型,用于增强节能和增强节能和突出显示物理耗散再现。 ]] >

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