I am trying to get the curvature of a dynamically moving mesh in WPO as shown in the attached figure.
I was able to get the surface normals with DDX and DDY, but when I try to create the curvature using DDX and DDY twice more from
I can’t seem to do the second derivative and the numbers after the second DDX and DDY are zero.
How can I get the curvature of a dynamically moving mesh in WPO?
Thank you in advance for your help.
