Mesh Construction from Medical Imaging for Multiphysics Simulation: Heat Transfer and Fluid Flow in Complex Geometries

Mesh Construction from Medical Imaging for Multiphysics Simulation: Heat Transfer and Fluid Flow in Complex Geometries
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用于多物理场仿真的医学成像网格构建:复杂几何形状中的传热和流体流动

DOI:
10.1080/19942060.2007.11015187
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发表时间:
2014
影响因子:
6.1
通讯作者:
Tabor G
Tabor G
中科院分区:
工程技术1区
文献类型:
--
作者:
Tabor G

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医学成像技术,如MRI和CT扫描,是重建复杂物体几何形状的宝贵工具。生物力学研究领域已经投入了大量的精力来开发图像处理软件,该软件能够从这些扫描中为计算连续介质力学包生成有效的网格。迄今为止,这些技术主要应用于单一物理过程的计算,例如流体流动或应力分析。我们描述了图像到网格转换的技术,该技术允许为物体的不同体积创建多个网格,确保共享边界上网格之间的绝对一致性,并允许在总体的不同子区域上计算耦合物理过程。这些技术的应用远远超出了生物医学领域,我们用苹果派和金属泡沫的耦合流体流动/传热计算来说明这种可能性。
Medical imaging techniques, such as MRI and CT scanning, are valuable tools for reconstructing the geometry of complex objects. Much effort has been applied in the biomechanical research field to develop image processing software capable of generating valid meshes for computational continuum mechanics packages from such scans. To date these techniques have largely been applied to computation of single physical processes, e.g., fluid flow or stress analysis. We describe techniques for image to mesh conversion which permit the creation of multiple meshes for distinct volumes of the object, ensuring absolute conformity between the meshes on shared boundaries and allowing computation of coupled physical processes on distinct subregions of the total volume. Such techniques have application well beyond the biomedical field, and we illustrate the possibilities with coupled fluid flow/heat transfer calculations for an apple pie and a metal foam.
对经过弯管的完全发展的稳定和脉动层流进行 MRI 和 CFD 组合分析
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