| 非等温粘弹流体平板收缩流的数值模拟 |
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| 引用本文： | 阮春蕾,欧阳洁,赵智峰,刘德峰.非等温粘弹流体平板收缩流的数值模拟[J].高分子材料科学与工程,2009(6). |
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| 作者姓名： | 阮春蕾 欧阳洁 赵智峰 刘德峰 |
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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);;西北工业大学博士创新基金(GX200817) |
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| 摘 要： | 基于线性PTT本构模型对非等温粘弹流体4∶1平板收缩流进行了模拟,其中分子松弛时间、聚合物黏度与温度的依赖关系通过WLF公式描述。控制方程采用同位网格有限体积法求解,速度-压力以及速度-应力间的耦合采用动量插值技术处理。文中给出了不同We数下粘弹流体等温和非等温情况下流场和应力场的变化情况,分析了温度对流场和应力场的影响,考察了Pe数、We数以及能量方程中参数k对温度场的影响。
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| 关 键 词： | 有限体积 非等温 PTT本构模型 WLF公式 粘弹流体 |
Numerical Simulation of Non-Isothermal Viscoelastic Fluid in the Planner Contraction |
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| RUAN Chun-lei,OUYANG Jie,ZHAO Zhi-feng,LIU De-feng.Numerical Simulation of Non-Isothermal Viscoelastic Fluid in the Planner Contraction[J].Polymer Materials Science & Engineering,2009(6). |
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| Authors: | RUAN Chun-lei OUYANG Jie ZHAO Zhi-feng LIU De-feng |
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| Affiliation: | School of Science;Northwestern Polytechnical University;Xi' an 710072;China |
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| Abstract: | Non-isothermal viscoelastic fluid in the planner contraction was simulated in this paper.The constitutive equation for the simulations is a Phan-Thien-Tanner(PTT)model whose temperature dependence is described by the WLF equation.The equations of mass,momentum,constitutive and energy are discretized by the collocated finite volume method.The velocity-pressure and velocity-stress decoupling is removed by the development of a new interpolation technique inspired of Rhie and Chow.Both the filed of velocity and... |
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| Keywords: | finite volume method non-isothermal PTT model WLF equation viscoelastic fluid |
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