ANSYS流固耦合计算实例

ANSYS流固耦合计算实例

Oscillating Plate with Two-Way Fluid-Structure Interaction

Introduction

This tutorial includes:

, Features

, Overview of the Problem to Solve

, Setting up the Solid Physics in Simulation (ANSYS Workbench)

, Setting up the Fluid Physics and ANSYS Multi-field Settings in ANSYS CFX-Pre

, Obtaining a Solution using ANSYS CFX-Solver Manager

, Viewing Results in ANSYS CFX-Post

If this is the first tutorial you are working with, it is important to review the following topics

before beginning:

, Setting the Working Directory

, Changing the Display Colors

Unless you plan on running a session file, you should copy the sample files used in this tutorial from the installation folder for your software (/examples/) to your working directory. This prevents you from overwriting source files provided with your installation. If you

plan to use a session file, please refer to Playing a Session File. Sample files referenced by this tutorial include:

, OscillatingPlate.pre

, OscillatingPlate.agdb

, OscillatingPlate.gtm

, OscillatingPlate.inp

1. Features

This tutorial addresses the following features of ANSYS CFX. Component Feature Details

User Mode General Mode

ANSYS CFX-Pre Transient

Simulation Type

ANSYS Multi-field

Component Feature Details

Fluid Type General Fluid

Domain Type Single Domain

Turbulence Model Laminar

Heat Transfer None

Monitor Points Output Control

Transient Results File

Wall: Mesh Motion = ANSYS MultiField

Boundary Details Wall: No Slip

Wall: Adiabatic

Timestep Transient

Animation

ANSYS CFX-Post Plots Contour

Vector

In this tutorial you will learn about:

, Moving mesh

, Fluid-solid interaction (including modeling solid deformation

using ANSYS)

, Running an ANSYS Multi-field (MFX) simulation

, Post-processing two results files simultaneously.

2. Overview of the Problem to Solve

This tutorial uses a simple oscillating plate example to demonstrate how to set up and run a simulation involving two-way Fluid-Structure Interaction, where the fluid physics is solved in ANSYS CFX and the

solid physics is solved in the FEA package ANSYS. Coupling between the two solvers is required throughout the solution to model the interaction between fluid and solid as time progresses, and the framework for the coupling is provided by the ANSYS Multi-field solver, using the MFX setup.

The geometry consists of a 2D closed cavity. A thin plate is anchored to the bottom of the cavity as shown below:

An initial pressure of 100 Pa is applied to one side of the thin plate for 0.5 seconds in order to distort it. Once this pressure is