| 基于非结构化网格同位有限体积法的粘弹流体数值模拟 |
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| 引用本文： | 阮春蕾,欧阳洁,刘帅强.基于非结构化网格同位有限体积法的粘弹流体数值模拟[J].高分子材料科学与工程,2009(9). |
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| 作者姓名： | 阮春蕾 欧阳洁 刘帅强 |
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| 作者单位： | 西北工业大学理学院; |
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| 基金项目： | 国家自然科学基金重大项目资助(10590353); 国家重点基础研究发展计划(2005CB321704) |
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| 摘 要： | 采用基于非结构化三角网格的同位有限体积法模拟了聚合物溶液平板收缩流。其中,聚合物溶液微观尺度大分子的信息通过FENE-P本构模型得以在宏观场上体现。数值求解过程中,速度与压力、速度与应力间的耦合通过动量插值实现。通过与结构化网格数值结果及实验结果的比较,验证了该方法在粘弹流动问题求解中的正确性。与此同时,文中根据构象张量给出了分子微观结构直观的可视化描述方法,并分析了不同流动区域分子形变以及分子取向等微观信息。
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| 关 键 词： | 非结构化网格 有限体积 FENE-P模型 平板收缩流 分子构象 |
Numerical Simulation of Viscoelastic Fluid by Collocated Finite Volume Method on Unstructured Meshes |
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| RUAN Chun-lei,OU Yang-Jie,LIU Shuai-qiang.Numerical Simulation of Viscoelastic Fluid by Collocated Finite Volume Method on Unstructured Meshes[J].Polymer Materials Science & Engineering,2009(9). |
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| Authors: | RUAN Chun-lei OU Yang-Jie LIU Shuai-qiang |
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| Affiliation: | RUAN Chun-lei,OU Yang-Jie,LIU Shuai-qiang(School of Science,Northwestern Polytechnical University,Xi' an 710072,China) |
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| Abstract: | In this paper,the collocated finite volume method on unstructured triangle meshes was used to simulate the polymeric liquids in contraction flow. The FENE-P constitutive equation was introduced to describe the stress caused by the macromolecule in the microscopic level. The velocity-pressure and velocity-stress decoupling was removed by the development of a new interpolation technique inspired of Rhie and Chow. The distributions of velocity and stress showed fair agreement with the structured mesh results a... |
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| Keywords: | unstructured meshes finite volume method FENE-P model contraction flow conformation of microstructure |
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