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/ALE/GRID/SPRING

/ALE/GRID/SPRING

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/ALE/GRID/SPRING

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Engine Keyword

/ALE/GRID/SPRING - Modify Parameters for ALE Grid Formulation

Description

Description

With this keyword it is possible to modify grid formulation parameters which initially be set in Starter keyword /ALE/GRID/SPRING. (Altair bar method for grid velocity computation).

Format

/ALE/GRID/SPRING

      Vmin

Data

Description

SI Unit Example

Typical time step

(Real)

Nonlinearity factor

Range: [0;1]

(Real)

 

Damping coefficient

(Real)

 

Shear scale factor

(Real)

 

Vmin

Minimum volume for element deletion

(Real)

Comments

1.For more details, refer to ALE Grid Calculation in the User's Guide and /ALE/GRID/SPRING in the Starter Reference Guide.

As of v12.0.210, /ALE/2 was replaced by /ALE/GRID/SPRING.

2.The must be greater than the actual time step used in simulation.
3.The is used to prevent the time step from dropping due to element collapse.

means no nonlinear effects

means less weight is given to elements that do not collapse

4.Default values are taken from a previous run.

See Also:

Automatic Grid Computation in Theory Manual