Fluid-Structure Interaction Techniques for Parachute
Fluid-Structure Interaction Techniques for Parachute
复制标题
降落伞流固耦合技术
DOI：
10.5772/28526
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
V. Udoewa
中科院分区：
文献类型：
--
作者：
Vinod Kumar;V. Udoewa
流固耦合是流体动力学与结构动力学之间强耦合的复杂流动物理现象。一个这样的例子是了解降落伞的行为在伞充气和下降。这种模拟可以通过减少所需的相当昂贵的实验/空投测试的数量来大大降低降落伞的设计成本。此外，流固耦合模拟可以通过提供各种情况下降落伞系统的详细流体流动和结构变形特性来增强实验方法。然而，在执行高保真FSI模拟时面临许多计算挑战。其中包括湍流建模、流固耦合、非线性迭代循环的收敛、捕捉流场中的物理不连续性、在并行计算机上高效准确地求解大型线性方程组以及提高并行性能。在这里，我们提出了一个高保真FSI技术，解决了高性能计算（HPC）环境中的耦合问题。
Fluid-Structure Interaction (FSI) is an inescapable feature of the complicated flow physics where strong coupling between fluid dynamics and structural dynamics occurs. One such example is to understand the behavior of parachutes during canopy inflation and decent. Such simulations can substantially reduce the design costs of parachutes by reducing the number of rather expensive experiments/airdrop tests required. Additionally, FSI simulations can augment experimental approaches by providing detailed fluid flow and structural deformation characteristics of the parachute systems under various scenarios. There are however many computational challenges that one faces in performing the high fidelity FSI simulations. Some of these are turbulence modeling, fluid-structure interaction coupling, the convergence of a nonlinear iteration loop, capturing the physical discontinuity in the flow field, efficiently and accurately solving a large set of linear equations on parallel computers, and improving the parallel performance. Here, we present a high fidelity FSI technique that addresses the coupling issues on High Performance Computing (HPC) environments.