HyperMesh 和自定义导出模板简化了亚利桑那州立大学研究项目中的 CFD 分析
技术
- 传感器 - 红外传感器
- 传感器 - 液体检测传感器
适用行业
- 航天
- 设备与机械
适用功能
- 物流运输
- 产品研发
用例
- 网状网络
- 智慧校园
关于客户
亚利桑那州立大学是一所致力于卓越、机会和影响力的机构。它从事有助于公共利益的研究，并对其周围社区的经济、社会和文化活力承担主要责任。亚利桑那州立大学物质传输与能源工程学院 (SEMTE) 涵盖机械、航空航天、材料和化学工程。 SEMTE 的综合模拟和计算流体实验室研究小组专注于开发和利用工具来研究大规模并行机器上的复杂工程和物理系统。他们使用开源计算流体动力学 (CFD) 求解器 Nek5000 进行研究，该求解器应用广泛，包括反应堆堆芯的热水力学、血管流的转变、大气和海洋建模以及燃烧。
挑战
亚利桑那州立大学 (ASU) 物质传输与能源工程学院 (SEMTE) 的综合模拟和计算流体实验室研究人员面临着使用商业代码 HyperMesh 作为通用预处理器来网格化复杂几何形状的挑战。光谱元素 CFD 代码 Nek5000。 Nek5000 代码需要 3D 六面体元素，这造成了困难，因为大多数 CFD 工具使用更容易为传统几何图形生成的四面体网格。研究人员希望受益于 HyperMesh 等高级网格划分工具的丰富功能，这些工具能够在使用 Nek5000 解算器代码的同时生成高质量的六面体网格。在项目开始之前，研究人员没有适当的网格划分通用流程。大多数网格划分都是使用 15 至 20 年前开发的定制工具来处理的，自那时以来更新很少。其他用户针对 MatLab 等软件中的特定问题创建了自己的网格划分工具。
解决方案
为了克服这一挑战，SEMTE 的研究人员设立了一个项目来开发一种转换器工具，该工具可以将商业代码 HyperMesh 中的网格导出为 Nek5000 代码可以使用的形式。他们选择 HyperMesh 是因为它具有解算器中立的功能、出色的文档和开放式架构。研究人员从不超过五到十个元素的非常小的问题开始，逐步完成开发和调试过程，以在更大的领域进行测试。经过数周的深入研究和编码，他们最终确定了导出模板，创建了一个更加用户友好且不易出错的流程。转换器工具首先将每个元素的节点坐标从 HyperMesh 内的本机格式转换为 Nek5000 数据结构。用户还通过 HyperMesh 提供边界条件，并在几何转换后将数据转换为 Nek5000 格式。然后，所有这些数据都会写入一个文件，该文件可以输入 Nek5000 求解器。工程师还为网格添加了中侧节点支持，以提高几何灵活性，并且转换器根据 HyperMesh 中使用的元素类型自动实现此信息。
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