DIFFOP_Version
version of least squares operators
MESHFREE provides different versions for the least squares operators. That is due to the fact, that
experience in
MESHFREE-applications steadily improves also the mathematical and numerical algorithms.
Default:
DIFFOP_Version = 5
The differential operators are completely described in
DOCUMATH_DifferentialOperators.pdf.
DIFFOP_Version | Description |
---|
3 | See section 2 -> original operator idea |
5 | See section 3 -> most commonly used version 5 |
6 and 7 | See sections 4 and 5 -> version 6 and 7 used for airbags (PAMCRASH FPM2) in order to handle difficult geometrical settings (folded membranes etc.) |
9 | Section 6 -> version 9 as an attempt to come up with conservative gradient operators; numerical differentiation step size D (relative to h): c_x = (c_0(x+D)-c_0(x-D))/(2*D); step size D=0.1, can be adapted by DEBUG_GeneralParameter(16) |
90 to 99 | Same as version 9, additional randomization of the weights in the least squares formulation between 10% and 100% |
-9 | Experimental -> version 9 for interior points and version 5 for boundary points |