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1、Oscillating Plate with Two-Way Fluid-Structure InteractionANSYS-China IntroductionThis 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 So
2、lution using ANSYS CFX-Solver Manager Viewing Results in ANSYS CFX-PostIf 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 ColorsUnless you plan on running a session file, you should c
3、opy 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 r
4、eferenced by this tutorial include: OscillatingPlate.pre OscillatingPlate.agdb OscillatingPlate.gtm OscillatingPlate.inp1. FeaturesThis tutorial addresses the following features of ANSYS CFX.Component Feature DetailsUser Mode General Mode Transient ANSYS CFX-PreSimulation TypeANSYS Multi-field Compo
5、nent Feature DetailsFluid Type General Fluid Domain Type Single Domain Turbulence Model Laminar Heat Transfer NoneMonitor PointsOutput ControlTransient Results FileWall: Mesh Motion = ANSYS MultiFieldWall: No SlipBoundary DetailsWall: AdiabaticTimestep Transient Animation Contour ANSYS CFX-Post Plot
6、sVector 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 SolveThis tutorial uses a simple oscillat
7、ing 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 th
8、e 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 P
9、a is applied to one side of the thin plate for 0.5 seconds in order to distort it. Once this pressure is released, the plate oscillates backwards and forwards as it attempts to regain its equilibrium (vertical) position. The surrounding fluid damps the oscillations, which therefore have an amplitude
10、 that decreases in time. The CFX Solver calculates how the fluid responds to the motion of the plate, and the ANSYS Solver calculates how the plate deforms as a result of both the initial applied pressure and the pressure resulting from the presence of the fluid. Coupling between the two solvers is
11、required since the solid deformation affects the fluid solution, and the fluid solution affects the solid deformation. The tutorial describes the setup and execution of the calculation including the setup of the solid physics in Simulation (within ANSYS Workbench) and the setup of the fluid physics
12、and ANSYS Multi-field settings in ANSYS CFX-Pre. If you do not have ANSYS Workbench, then you can use the provided ANSYS input file to avoid the need for Simulation. 3. Setting up the Solid Physics in Simulation (ANSYS Workbench) This section describes the step-by-step definition of the solid physic
13、s in Simulation within ANSYS Workbench that will result in the creation of an ANSYS input file OscillatingPlate.inp. If you prefer, you can instead use the provided OscillatingPlate.inp file and continue from Setting up the Fluid Physics and ANSYS Multi-field Settings in ANSYS CFX-Pre. Creating a Ne
14、w Simulation1. If required, launch ANSYS Workbench.2. Click Empty Project. The Project page appears displaying an unsaved project. 3. Select File Save or click Save button. 4. If required, set the path location to a different folder. The default location is your working directory. However, if you ha
15、ve a specific folder that you want to use to store files created during this tutorial, change the path. 5. Under File name, type OscillatingPlate. 6. Click Save. 7. Under Link to Geometry File on the left hand task bar click Browse. Select the provided file OscillatingPlate.agdb and click Open. 8. M
16、ake sure that OscillatingPlate.agdb is highlighted and click New simulation from the left-hand taskbar. Creating the Solid Material 1. When Simulation opens, expand Geometry in the project tree at the left hand side of the Simulation window.2. Select Solid, and in the Details view below, select Material. 3. Use the arrow that appears next to the material name Structural Steel to select New Material. 4. When the Engineering Data window opens, right-click New Mater
