Forward third of the spectral post-process for the 110 case (non-periodic x and y, periodic z, R2C Z-transpose layout): normalise, Z periodic post-process forward, then the X paired even/odd split.
Layout: div_u(n1, n2, n3) with dim1 = Z r2c modes (az, bz), dim2 = X modes (ax, bx), dim3 = Y modes. Dim2 must span the whole global x range (nx), which the caller guarantees, since the X pairing writes both a mode and its mirror in the same pass.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| complex(kind=dp), | intent(inout), | dimension(:, :, :) | :: | div_u |
Divergence of velocity in spectral space, (nz/2+1, nx, ny) layout |
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| integer, | intent(in) | :: | n1 |
Local extents of div_u |
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| integer, | intent(in) | :: | n2 |
Local extents of div_u |
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| integer, | intent(in) | :: | n3 |
Local extents of div_u |
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| integer, | intent(in) | :: | st1 |
Offsets of the local block within the global spectral array |
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| integer, | intent(in) | :: | st2 |
Offsets of the local block within the global spectral array |
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| integer, | intent(in) | :: | nx |
Global cell size |
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| integer, | intent(in) | :: | ny |
Global cell size |
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| integer, | intent(in) | :: | nz |
Global cell size |
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| real(kind=dp), | intent(in), | dimension(:) | :: | ax | ||
| real(kind=dp), | intent(in), | dimension(:) | :: | bx | ||
| real(kind=dp), | intent(in), | dimension(:) | :: | az | ||
| real(kind=dp), | intent(in), | dimension(:) | :: | bz |