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Comparison of various fluid-structure interaction methods for deformable bodies

机译:变形体各种流固耦合方法的比较

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摘要

A perspective is given on fictitious domain methods for deformable bodies that exert large motions induced by unsteady flow. In these methods an Eulerian and Lagrangian formulation are employed for the fluid and solid, respectively, and both bodies are coupled using a Lagrange multiplier. The use of a multiplier allows the solid not to be an integral part of the fluid mesh. Three variations of the fictitious domain method that have been published before, are compared to an ALE method in two numerical experiments and in conclusion the advantages, disadvantages and differences for the different approaches are discussed.
机译:给出了一种虚拟域方法的观点,该方法适用于因非定常流动而引起大运动的可变形体。在这些方法中,流体和固体分别采用欧拉公式和拉格朗日公式,并且使用拉格朗日乘数将两个物体耦合。倍增器的使用允许固体不成为流体网格的组成部分。在两个数值实验中,将以前发布的虚拟域方法的三种变体与ALE方法进行了比较,并最终讨论了不同方法的优点,缺点和区别。

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