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Development on the Numerical Simulation Technique for General Purpose of Three-dimensional Non-Newtonian Pure Viscous and Viscoelastic Flows

三维非牛顿纯粘弹性流通用数值模拟技术的发展

基本信息

批准号：
08455359
负责人：
FUNATSU Kazumori
金额：
$ 1.47万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

项目摘要

1.Development of Three-dimensional Viscoelastic Flow Simulation Technique.(1-1) We developed the three-dimensional viscoelastic flow simulation technique for complex folw geometries, by applying the decoupled method for the equation of motion and the stream-wise integration method for extra elastic stress variables.(1-2) We developed the non-isothermal three-dimensional visocleastic flow simulation technique using (1) and the streamline up-winding FEM technique.2.Development of Viscoelastic Flow Simulation with Interface and Free-surfaces.(2-1) We examined the determination method of interface and free-surface and developed the multi-layr viscoelastic annular die-swell simulation technique. Further more, we considered the wall slip effects on the extruded swell behavior.(2-2) We developed the three-dimensional viscoelastic flow with interface simulation technique and applied it to the coextrusion.(2-3) We developed the three-dimensional viscoelastic flow with free surface and applied t … More o profiled die-swell.3.Developmemt of Three-dimensional Non-Newtonian Pure viscous Flow in Complex Geometries Simulation Technique and Establishment of Mixing Performance.(3-1) We developed the three-dimebsional non-Newtonian pure-viscous flow simulation technique in a each double-flighted screw and kneading discs region of twin screw extruders. We visualized the behavior of flow by animating the motion of markers, which tracking by our developed maker tracking method. We proposed one of the novel mixing index that the distribution of the nearest distance of markers.(3-2) We developed the three-dimensional non-Newtonian pure-viscous flow simulation technique in a assembled region of a double-flighted screw and kneading discs of twin screw extruders.(3-3) We developed the three-dimensional non-isothermal non-Newtonian pure-viscous flow simulation technique in a kneading discs region of twin screw extruders using the stream line up-winding FEM technique.(4-4) We developed the three-dimensional non-Newtonian pure-viscous flow simulation technique in a Agitated bioreactor of 250ml spine flask and 4 blade paddles in 6-L jar. We visualized the behavior of flow by animating the motion of markers, which tracking by our developed marker tracking method. Less

1.三维粘弹性流动模拟技术的发展。（1-1）采用运动方程的解耦方法和超弹性应力变量的流向积分方法，开发了复杂几何流道的三维粘弹性流动模拟技术。（1-2）利用(1)和流线上绕有限元技术开发了非等温三维粘弹性流动模拟技术。基于界面和自由曲面的粘弹性流动模拟研究进展。（2-1）研究了界面和自由表面的确定方法，发展了多层粘弹性环形模胀模拟技术。此外，我们还考虑了壁面滑移对挤压膨胀行为的影响。（2-2）采用界面模拟技术建立了三维粘弹性流动模型，并将其应用于共挤压。（2-3）建立了具有自由表面的三维粘弹性流动模型，并将其应用于多型模胀。三维非牛顿纯粘性复杂几何流动模拟技术的发展及混合性能的建立。（3-1）建立了双螺杆挤出机各双螺杆和捏合盘区域的三维非牛顿纯粘性流动模拟技术。我们通过动画化标记的运动来可视化流的行为，并利用我们开发的创客跟踪方法来跟踪这些标记。我们提出了一种新的混合指标，即标记物最近距离的分布。（3-2）建立了双螺杆挤出机双螺杆与捏合盘组合区域的三维非牛顿纯粘性流动模拟技术。（3-3）采用流线上卷有限元方法，建立了双螺杆挤出机捏合盘区三维非等温非牛顿纯粘性流动模拟技术。（4-4）在一个搅拌生物反应器中建立了三维非牛顿纯粘性流动模拟技术，该生物反应器为250ml脊椎烧瓶和4个桨叶，装在6-L瓶中。我们通过动画化标记的运动来可视化流的行为，并采用我们开发的标记跟踪方法对其进行跟踪。少