DVGRID – Relationship between Design Variable and Grid Point Location
Defines the relationship between a design variable and a grid point location.
|
(1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
|
DVGRID |
DVID |
GID |
CID |
COEFF |
X |
Y |
Z |
|
|
|
(1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
|
DVGRID |
1 |
1032 |
0 |
1.0 |
1.0 |
0.0 |
0.0 |
|
|
|
Field |
Contents |
|
DVID |
DESVAR identification number. (Integer > 0) |
|
GID |
GRID identification number. (Integer > 0) |
|
CID |
Coordinate system identification number. (Integer > 0, default = 0) |
|
COEFF |
Multiplier to the vector defined in fields 6, 7, and 8. |
|
X, Y, Z |
Components of the vector defining the perturbation of the grid in the coordinate system defined by CID. |
A CID of zero or blank references the basic coordinate system.
Multiple references to the same grid ID will yield a summation of perturbation vectors for the given grid.
The DVGRID data defines perturbations in the locations of the grids. The updated location of the grid is:
where DVj
is the value of design variable j and [N]
is the coordinate
transformation matrix based on the CID and the GRID location.
Go To
Guidelines for Bulk Data Entries
Alphabetical List of Bulk Data Entries