Clarifications on H in Nor-Sand

FLAC3D
1

This question may be for @cheng : I would like to have clarifications regarding calculation of H inside FLAC3D, specifically:
(1) H = H0 + Hypsi, or H = H0 - Hypsi (which is used in VBA of Mike)
(2) Have FLAC3D applied any cut-off to H? It looks like FLAC3D accepts negative value of H?

Thanks in advance!

1 Like
2

(1) This is a typo in the documentation. It should be “minus”. The code is using “minus”.
(2) Although it accepts a negative H. The cut-off is 10 and 0.5/(lambda-kappa), whichever is larger.
We will update the doc. Sorry for the inconvenience.

1 Like
3

Thanks! How do you calculate lambda and kappa if I am using C1, C2 and C3? Do you update them based on current or initial p’?

1 Like
4

For this case lambda is approximated to be the slope of the curve at the initial p’, kappa is zero.

1 Like