Fluid-solid interaction analysis using ANSYS/multiphysics

摘要

The simulation of fluid-solid interaction (FSI) problems is becoming of great importance for engineering applications. This paper presents a loosely coupled fluid-solid interaction algorithm implemented in ANSYS / Multiphysics 6.1. FSI in ANSYS provides a fully implicit time accurate staggered solution approach with both conservative and non-conservative load (tractions, displacement, heat flux and temperature) transfer across dissimilar mesh interface. Analysis supports fluid flow analysis using ANSYS/FLOTRAN and structural/thermal/coupled field analysis using ANSYS elements with geometric and material non-linearities. Mesh motion is accounted for using an ALE formulation and elasticity based morphing in the fluid region and allows for fluid element birth and death, allowing contact between moving surfaces. Results are presented highlighting multidisciplinary applications of the present method.