[asifnafi]

Hi,
I was just printing the values of X-coordinates of a line of a rectangle using udf. but the coordinates are printed like this (for a straight line from the origin):
0.1
0.2
0.5
0.4
0.6
0.3


I'm using define_grid_motion macro to print the co-ordinates (NODE_X(node)). I don't understand why it's like this. Does Ansys macro loops work like this?

[obscureed]

Hi Asifnafi,


There are no guarantees (in principle or in practice) about the order in which faces are visited by a begin_f_loop, or the order in which nodes are visited by f_node_loop. (OK, there are some constraints on how the nodes appear in practice -- they will be in cyclic order, probably with some kind of anticlockwise-around-the-normal convention -- but I don't remember whether this is officially guaranteed.)


You should not need a specific order for a typical UDF. If you were doing some kind of specialist thing that required a specific order, you would need to arrange it yourself.


Best regards,
Ed

[asifnafi]

Hi obsecureed,
Thanks for getting back so quickly. I've solved it today. I had to create a pointer and an array to copy the nodes pointers and node values to rearrange them at ascending order. Then everything was easy.
Thanks,
Asif