Gradient3D

DESCRIPTION

This module calculates the gradient of a three dimensional uniform scalar field. A centered difference algorithm is used to create the 3 component vector field: 

grad(f(i,j,k)) = (

(f(i+1,j  ,k  )-f(i-1,j  ,k  ))/delx,
(f(i  ,j+1,k  )-f(i  ,j-1,k  ))/dely,
(f(i  ,j  ,k+1)-f(i  ,j  ,k-1))/delz)

This module has been replaced by GradientLat, which offers more functionality, but is retained for backwards compatibility. The module may be removed from future releases.

INPUTS

Port: Scalar Field
Type: Lattice
Constraints: 3-D
Constraints: 1-vector
Constraints: uniform
The input scalar lattice.

WIDGETS

OUTPUTS

Port: Gradient
Type: Lattice
Constraints: 3-D
Constraints: 3-vector
Constraints: uniform
A three component vector field.

KNOWN PROBLEMS

SEE ALSO

GradientLat, Gradient.
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© The Numerical Algorithms Group Ltd, Oxford UK. 2000