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/ALE/LINK/VEL

/ALE/LINK/VEL

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/ALE/LINK/VEL

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Block Format Keyword

/ALE/LINK/VEL - Defines Links on Grid Velocities

Description

With ALE links on grid velocities, given nodes are linked to the given master grid velocities. Either a direction or a combination of directions can be specified.

ale_link_vel

Format

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

/ALE/LINK/VEL/alelink_ID

alelink_title

node_ID1

node_ID2

grnod_ID

grid_dof

Iform

 

 

 

 

 

Tstart

Tstop

 

 

 

 

hmtoggle_plus1Flag Definition

Field

Contents

SI Unit Example

node1

First master node number

(Integer, maximum 10 digits)

 

node2

Second master node number

(Integer, maximum 10 digits)

 

grnod_ID

Node group to which ALE link is applied.

(Integer, maximum 10 digits)

 

grid_dof

A combination of X, Y, and Z

=0: free DOF

=1: fixed DOF

(Booleans)

(see codes for grid velocity direction)

 

Iform

Formulation flag

(Integer)

= 0 (linear):

= 1 (maximum):

WN = WM1  if

WN = WM2  if

= -1 (minimum):

WN = WM1  if

WN = WM2  if

 

Tstart

Start time

(Real)

 

Tstop

Stop time

(Real)

 
hmtoggle_plus1Codes for Grid Velocity Directions: Grid_dof

(1)-1

(1)-2

(1)-3

(1)-4

(1)-5

(1)-6

(1)-7

(1)-8

(1)-9

(1)-10

 

 

 

WX

WY

WZ

 

 

 

 

 

Field

Contents

WX

Code for grid velocity in direction X

=0: free DOF

=1: fixed DOF

(Boolean)

WY

Code for grid velocity in direction Y

=0: free DOF

=1: fixed DOF

(Boolean)

WZ

Code for grid velocity in direction Z

=0: free DOF

=1: fixed DOF

(Boolean)
hmtoggle_plus1Comments
1.ALE links can only be deactivated/activated during Engine computation (/ALE/LINK/ON and /ALE/LINK/OFF).
2.ALE links can also be added during an Engine run (Engine Input). RADIOSS will superimpose the grid velocities if different ALE links are defined in both Starter and Engine for the same node.
3.The grnd_ID input is mandatory.
4.Formulation 0 needs an unsortable group of nodes (/GRNOD/NODENS).

See Also:

/ALE/LINK/VEL