Fluid‐Structure Interaction Using LES ‐ A Partitioned Coupled Predictor‐Corrector Scheme
Fluid‐Structure Interaction Using LES ‐ A Partitioned Coupled Predictor‐Corrector Scheme
复制标题
使用 LES 的流固耦合 – 分区耦合预测器校正方案
DOI：
10.1002/pamm.200810515
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Munsch
中科院分区：
文献类型：
--
作者：
Breuer;Munsch
The interaction between fluid and structure (FSI) plays a dominant role in many technical applications. Therefore, a strong need for appropriate numerical simulation tools exists for such coupled problems. In previous studies [1, 2] we investigated FSI applications in the regime of laminar and turbulent flows using the Reynolds–Averaged Navier–Stokes (RANS) approach. For that purpose, a partitioned fully implicit scheme was applied which coupled a three-dimensional finite-volume based multiblock flow solver for incompressible fluids with a finite-element code for the structural problem. This coupling scheme works efficiently for large time step sizes typically used for implicit time–stepping schemes with RANS. However, flow problems involving large–scale flow structures like vortex shedding or instantaneous separation are often not reliably predicted by RANS and more advanced techniques such as large–eddy simulation (LES) are required. To resolve the flow field in time, LES uses small time steps. Thus, in general explicit time–marching schemes are favored, especially predictor–corrector schemes. Therefore, the objective of this study was to design a FSI coupling scheme, which on the one hand is appropriate for an explicit time–stepping scheme and on the other hand avoids instabilities known from loose coupling schemes.
