Multi-physics CFD simulations in engineering
Multi-physics CFD simulations in engineering
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DOI：
10.1007/s11630-013-0626-x
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发表时间：
2013-08
影响因子：
2.5
通讯作者：
M. Yamamoto
中科院分区：
文献类型：
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作者：
M. Yamamoto
目前，许多工程领域都采用计算流体力学(CFD)软件作为设计和分析工具。可以说，单物理CFD在实践上已经足够成熟。现有的CFD软件主要针对的是水、空气等单相流。然而，工程中存在许多多物理问题。它们大多由流动和其他物理组成，不同物理之间的相互作用是非常重要的。显然，多物理现象在开发机器和过程中是至关重要的。一个多物理现象似乎非常复杂，很难通过在流动现象中加入其他物理来预测。因此，多物理CFD技术仍在研究和开发中。这可能是由于目前计算机的处理速度不足以进行多物理模拟，而且除了流动物理之外还没有合适的物理模型。因此，在不久的将来，我们必须开发各种物理模型和高效的CFD技术，才能在工程上成功地进行多物理模拟。在本文中，我将描述多物理CFD模拟的现状，然后给出我实验室获得的三维压气机叶片的结冰和电化学加工过程等数值结果。多物理CFD模拟是未来的关键技术。
Nowadays Computational Fluid Dynamics (CFD) software is adopted as a design and analysis tool in a great number of engineering fields. We can say that single-physics CFD has been sufficiently matured in the practical point of view. The main target of existing CFD software is single-phase flows such as water and air. However, many multi-physics problems exist in engineering. Most of them consist of flow and other physics, and the interactions between different physics are very important. Obviously, multi-physics phenomena are critical in developing machines and processes. A multi-physics phenomenon seems to be very complex, and it is so difficult to be predicted by adding other physics to flow phenomenon. Therefore, multi-physics CFD techniques are still under research and development. This would be caused from the facts that processing speed of current computers is not fast enough for conducting a multi-physics simulation, and furthermore physical models except for flow physics have not been suitably established. Therefore, in near future, we have to develop various physical models and efficient CFD techniques, in order to success multi-physics simulations in engineering. In the present paper, I will describe the present states of multi-physics CFD simulations, and then show some numerical results such as ice accretion and electro-chemical machining process of a three-dimensional compressor blade which were obtained in my laboratory. Multi-physics CFD simulations would be a key technology in near future.