FLUENT12流固耦合精选教程

Training Manual
• Right-click on “Mesh” and select Insert-->Inflation • Click on “Flow” body in graphics window and click Apply button beside “Geometry” under “Details of Inflation”
– Find equivalent stresses, calculate deformations
• This type of analysis is available under Custom Systems in the Workbench Toolbox. • Only a Geometry model (probefsi.agdb) is provided.
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April 30, 2009
WORKSHOP 1
Probe Inflation
• The Boundary to which Inflation is applied is the “FSISurface” named selection. • Highlight “FSISurface” under Named Selections, right click, and choose “Select Items In Group”. • Then Highlight the “Inflation” that you created, click in the Yellow box next to Boundary and Apply.
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April 30, 2009
WORKSHOP 1
Load Geometry File
Training Manual
• The geometry of the probe and the flow field around it is contained in the file “probefsi.agdb”. • The initial state of the Geometry cell is “Attention Required” • Highlight Geometry and Right Click, choosing “Import Geometry”. Browse for the file. • Check mark replaces in the Geometry cell indicating cell is “Up to Date”. • The import occurs without geometry been visible to the user.
Training Manual
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April 30, 2009
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Outside Inflation Layer
• Similarly, insert another inflation method • Select “Flow” body as geometry and select outside face as “boundary”. • Make sure the selection filter in toolbar is “Face”
Training Manual
• The mesh cell state changes to “Refresh Required” • We could simply refresh cell and create mesh using default settings but we will open Meshing application to specify mesh sizes and controls
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April 30, 2009
WORKSHOP 1
FLUENT – Static Structural
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Training Manual
• Also, for convenience, under Custom Systems in the Toolbox there is a preset “FSI: Fluid Flow (FLUENT) -> Static Structural” analysis icon
– Under “Sizing” specify:
• 1.5e-4m for Min Size • 5e-4m for Max Face Size • 5e-4m for Max Tet Size
Training Manual
• Cursor “circles” represent specified mesh sizes
Workshop 1: Flow Probe
Release 12.0
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April 30, 2009
WORKSHOP 1
Problem Description
Training Manual
Training Manual
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April 30, 2009
WORKSHOP 1
Connect the Analyses
Training Manual
• Before importing the geometry file, we will ensure that both analyses use the same geometry. • Left click in the Geometry Cell (A2) of “Fluid Flow (FLUENT)”system and drag it into the Geometry Cell of the “Static Structural (ANSYS)” system. Share A2 indicates that the cell “A2” will be shared with cell “B3”.
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April 30, 2009
WORKSHOP 1
Named Selections and Filtering
Training Manual
• From the Project page, ensure that Named Selections will be transferred between applications • Tools-->Options-->Geometry Import
Training Manual
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April 30, 2009
WORKSHOP 1
Face Sizing
• Specify two local face sizing. • Highlight “Mesh”, right-click, Insert->Sizing • Make sure the selection filter in toolbar is “Face” • Enter “Element Size” as shown
• Consider a Probe which protrudes into a flow field and subjected to a high flow velocity.
• We would like to know how a 100 m/s velocity through the flow passage will affect the probe structurally:
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April 30, 2009
WORKSHOP 1
Global Mesh Sizes
• Right-Click on “Probe” body under “Geometry” in tree view and select “Suppress Body”. • Highlight “Mesh” in tree view
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April 30, 2009
WORKSHOP 1
Inflation
• Two inflation methods will be specified
– Probe surfaces – Outer surface
Project Schematic
• Highlight “Fluid Flow (FLUENT)” icon under Analysis Systems. • Double click. • “Fluid Flow (FLUENT)” system is added to project schematic as System A. • Do the same with “Static Structural (ANSYS)” under Analysis Systems. • “Static Structural (ANSYS)” system is added to project schematic as System B. • A and B and independent systems.
– Double-click to create system schematic shown below
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April 30, 2009
WORKSHOP 1
Mesh the Model
• Check box for Named Selections and remove NS for Filtering Prefix
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WORKSHOP 1
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Manual Setup on Project Page
Training Manual
• In a similar fashion, left click in the Solution Cell (A5) of “Fluid Flow (FLUENT)”system and drag it into the Setup Cell of the “Static Structural (ANSYS)” system. Transfer A5 indicates that the solution data from “A5” will be transferred to cell “B3”. The solution data will be used as a pressure load in “Static Structural (ANSYS) system.