Stationary and Time Dependent One-Way Coupled Studies for Fluid-Structure Interaction
The Stationary, One-Way Coupled; Time Dependent, One-Way Coupled; Stationary, One-Way Coupled with Initialization; and Transient, One-Way Coupled with Initialization studies are available with the Fluid-Structure Interaction interface, which requires the MEMS Module or the Structural Mechanics Module.
The initialization study types are also available if you have a Structural Mechanics Module plus the CFD Module.
Stationary, One-Way Coupled
The Stationary, One-Way Coupled () study is used for stationary fluid-structure interaction computations where the model is one-way coupled in the sense that the structural deformations are so small that they do not affect the flow.
The study consists of two study steps: a Stationary, Fluid study step, solving for the fluid velocity and pressure fields, followed by a Stationary, Solid study step, solving for the solid deformation field. The settings available for the two study steps are the same as for a Stationary study step. If an additional physics interface is added, then it is automatically added to both study steps.
Time Dependent, One-Way Coupled
The Time Dependent, One-Way Coupled () study is used for time-dependent fluid-structure interaction computations where the model is one-way coupled in the sense that the structural deformations are so small that they do not affect the flow.
The study consists of two study steps: a Time Dependent, Fluid study step, solving for the fluid velocity and pressure fields, followed by a Time Dependent, Solid study step, solving for the solid deformation field. The settings available for the two study steps are the same as for a Time Dependent study step. If an additional physics interface is added, then it is automatically added to both study steps.
Stationary, One-Way Coupled with Initialization
The Stationary, One-Way Coupled with Initialization () study is used for stationary turbulent fluid-structure interaction computations where the model is one-way coupled in the sense that the structural deformations are so small that they do not affect the flow.
The study consists of three study steps: a Wall Distance Initialization study step, solving for the distance function to the closest wall, followed by a Stationary, Fluid study step, solving for the fluid field, and finally a Stationary, Solid study step, solving for the solid deformation field. The settings available for the study steps are the same as for a Stationary study step. If an additional physics interface is added, then it is automatically added to the last two study steps.
How to Add this Study
1
Add a Fluid-Structure Interaction interface to the model.
2
On the Fluid-Structure Interaction node’s Settings window under Physical Model, select RANS as the Turbulence model type.
3
Select Low Reynolds number k-ε or Spalart-Allmaras as the Turbulence model.
4
In the Model Builder, right-click the root node and select Add Study.
5
In the Model Wizard or Add Study window under Preset Studies, select the Stationary, One-Way Coupled with Initialization study.
Transient, One-Way Coupled with Initialization
The Transient, One-Way Coupled with Initialization () study is for time-dependent, one-way coupled Fluid-Structure Interaction models using a turbulence model that requires the distance to the closest wall. The study node creates three study steps:
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The first, Wall Distance Initialization, solves for the distance to the closest wall.
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The second, Time Dependent, Fluid, solves for the fluid-flow variables.
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The third, Time Dependent, Solid, solves for the solid deformation.
The settings available for the study steps are the same as for the Time Dependent node. When additional physics interfaces are included, it is by default added to the last two study steps.
How to Add this Study
1
Add a Fluid-Structure Interaction interface to the model.
2
On the Fluid-Structure Interaction node’s Settings window under Physical Model, select RANS as the Turbulence model type.
3
Select Low Reynolds number k-ε or Spalart-Allmaras as the Turbulence model.
4
In the Model Builder, right-click the root node and select Add Study.
5
In the Model Wizard or Add Study window under Preset Studies, select the Transient, One-Way Coupled with Initialization study.
Stationary, Fluid
The Stationary, Fluid () study step is added to the Stationary, One-Way Coupled or Stationary, One-Way Coupled with Initialization study, which are available for the Fluid-Structure Interaction interface. The settings available for this node are the same as for the Stationary node.
Time Dependent, Fluid
The Time Dependent, Fluid () study step is added to the Time Dependent, One-Way Coupled or Transient, One-Way Coupled with Initialization study, which are available for the Fluid-Structure Interaction interface. The settings available for this node are the same as for the Time Dependent node.
Stationary, Solid
The Stationary, Solid () study step is added to the Stationary, One-Way Coupled or Stationary, One-Way Coupled with Initialization study, which are available for the Fluid-Structure Interaction interface. The settings available for this node are the same as for the Stationary node.
Time Dependent, Solid
The Time Dependent, Solid () study step is added to the Time Dependent, One-Way Coupled or Transient, One-Way Coupled with Initialization study, which is available for the Fluid-Structure Interaction interface. The settings available for this node are the same as for the Time Dependent node.