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CAE Fidesys 9.0 Documentation |
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CAE Fidesys 9.0 Documentation |
We consider a two-dimensional problem of a square plate, which is acted upon by pore pressure and fluid flow.
1. Create a surface.
On the command bar, select the module for constructing surface geometry (Mode - Geometry, Entity - Surface, Action - Create).
From the list of geometric primitives Select Rectangle.
Set block dimensions:
Width: 1;
Location: ZPlane.
Click Apply.
2. Move the surface to the origin.
On the command bar, select the module for constructing surface geometry (Mode - Geometry, Entity - Surface, Action - Transform).
Select Move from the list of possible transformations.
Set the following parameters:
Surface ID(s): 1;
Include Merged: uncheck the box;
Select Method: Distance;
X Distance: 0.5;
Y Distance: 0.5.
Click Apply.
Thus, the bottom left corner of the plate has moved to the origin.
1. Changing mesh settings.
In order to automatically build a quadrangular mesh, change the default settings. In the standard line, select Tools - Options.
In the window that opens, select Mesh Defaults in the left column. In the Default Element Type panel, set the default to Hex/Quad.
Click Save.
2. On the command bar, select the surface mesh module (Mode - Mesh, Entity - Surface, Action - Mesh).
Set the following parameters:
Select a meshing scheme: Automatically Calculate;
Select Surfaces: 1.
Click Apply Scheme.
Click Mesh.
1. In the command bar, select the module for specifying material properties (Mode - Material, Entity - Material Management).
Specify the name of the material material. From the left column, drag Isotropic Material to the Material Properties column. Set the following parameters:
Young's modulus: 1.85e4;
Poisson ratio: 0.3333.
In the window on the left go to Geomechanic - Biot Isotropic model. Drag the characteristics Permeability, Fluid's viscosity and Biot alpha to the Material Properties window. Enter value:
Permeability: 0.01;
Fluid'sviscosity: 0.001;
Biot alpha: 0.955.
Click Apply.
Close the Materials management window.
2. Create a block of one material type.
On the command bar, select the block management module (Mode - Blocks, Entity - Block, Action - Add).
Set the following parameters:
Block ID: 1;
Entity List : Surface;
Entity ID(s):1 (or using the all command).
Click Apply.
3. Set the block parameters.
On the command bar, select the block management module (Mode - Blocks, Entity - Block, Action - Block properties/parameters).
Set the following parameters:
Block ID(s): 1;
Category: Plane;
Material: material;
Coordinate System: Global Cartesian;
Order: 1.
Click Apply.
1. Set pore pressure to curve 1.
On the command panel, select the boundary conditions module (Mode - Boundary Conditions, Entity - Pore Pressure, Action - Create).
Set the following parameters:
Entity List: Curve;
Entity ID(s): 1;
Value: 0.
Click Apply.
2. Set the fluid flow to curve 3.
On the command panel, select the boundary conditions module (Mode - Boundary Conditions, Entity - Fluid Flux, Action - Create).
Set the following parameters:
Entity List: Curve;
Entity ID(s): 3;
Value: 1200.
Click Apply.
1. Set the analysis type.
On the command bar, select the calculation settings module (Mode - Calculation Settings, Calculation Settings - Static, Static - General).
Select:
Dimension: 2D;
Plane State: Plane Strain;
Model: Elasticity uncheck (checked by default);
Model: Pore Fluid Transfer.
Click Apply.
Click Start Calculation.
2. In the window that appears, select the directory where the result will be saved and enter the file name.
3. In the case of a successful calculation, the console displays the message: Calculation finished successfully at "date" "time".
1. Open the file with the results. There are three ways to do that.
Click Ctrl+E.
From the main menu, select Calculation. Click Open Results.
Select Results on Command Panel (Mode - Results). Click Open results.
In the appeared FidesysViewer window on the toolbar, set the following parameters:
Display field: Pore Pressure;
Display type: Surface.
2. Select Filter → Alphabetical → Probe Location. In the properties tab for this filter, set the following parameters:
Center: (0.5, 0, 0);
Radius: 0;
Number Of Points: 1.
Click Apply.
As a result, the displayed pore pressure value was 120.
3. On the top panel, select the data of the calculation result to display:
Display field: Fluid Flux;
Display component: Y;
Display type: Surface.
Select Filter → Alphabetical → Probe Location. In the properties tab for this filter, set the following parameters:
Center: (0.5, 0.5, 0);
Radius: 0;
Number Of Points: 1.
Click Apply.
As a result, the values of fluid flow and pore pressure are displayed.
Geometry creating, meshing, setting boundary conditions and materials can be performed using the console interface. Below is a link to the program code that allows you to perform the steps described above manual, you only need to specify the full path and name.