首页|非等温eXtended Pom-Pom泊肃叶流动的光滑粒子流体动力学方法模拟

非等温eXtended Pom-Pom泊肃叶流动的光滑粒子流体动力学方法模拟

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开展非等温黏弹性泊肃叶流动的光滑粒子流体动力学(SPH)方法模拟,其中流体的黏弹特性依据eXtended Pom-Pom(XPP)本构模型进行建模和计算.推导温度方程的SPH离散格式,并依据时温等效原理考量流体的黏弹特性对温度的依赖.将SPH模拟结果与利用有限体积方法得到的结果进行比较,验证SPH方法模拟非等温XPP泊肃叶流动的准确性和有效性.利用 4 个不同粒子初始间距进行模拟,讨论SPH方法的数值收敛性.研究温度方程的引入对泊肃叶流动带来的影响.深入分析不同物理参数对流动过程的影响.
Smoothed Particle Hydrodynamics Simulation of Non-isothermal eXtended Pom-Pom Poiseuille Flow
Smoothed particle hydrodynamics(SPH)simulation of non-isothermal viscoelastic poiseuille flow is carried out,in which the viscoelastic properties of the fluid are modeled and calculated according to the eXtended Pom-Pom(XPP)constitutive model.The SPH discrete format of the temperature equation is derived,and the temperature dependence of viscoelastic properties of fluid is considered based on the principle of time temperature equivalence.The accuracy and effectiveness of the SPH method for simulating non-isothermal XPP poiseuille flow are verified by comparing the SPH results with those obtained by the finite volume method.The numerical convergence of the SPH method is discussed by performing simulations with four different initial particle spacings.The influence of the introduction of the temperature equation on poiseuille flow is studied.The influence of different physical parameters on the flow process is deeply analyzed.

smoothed particle hydrodynamicseXtended Pom-Pom modelnon-isothermalpoiseuille flow

许晓阳、赵雨婷

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西安科技大学计算机科学与技术学院,陕西 西安 710054

光滑粒子流体动力学 eXtended Pom-Pom模型 非等温 泊肃叶流动

国家自然科学基金陕西省特支计划青年拔尖人才项目

12071367289890259

2024

计算物理
中国核学会

计算物理

CSTPCD北大核心
影响因子:0.366
ISSN:1001-246X
年,卷(期):2024.41(2)