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-   -   Suspected division by zero on velocity reported by point probe (http://www.cfd-online.com/Forums/star-ccm/119915-suspected-division-zero-velocity-reported-point-probe.html)

dahicke June 26, 2013 23:14

Suspected division by zero on velocity reported by point probe
 
Hi All,

I am doing a mesh refinement study with a DFBI overset mesh and am trying to get velocity values (i,k) via two maximum reports vs. iteration. I picked a point in the region of interest created a derived part, created two maximum reports getting the i velocity and k velocity at that point, created the monitors for each report, and then put them into an XY graph plot.

It works fine except that there are time when the values seem to be divided by zero for 4 or 5 iteration and some as long as about 40 iterations.

Is this a bug in the point probe, maybe a cell to point probe alignment problem?

I would expect this behavior early in convergence, but not at the end.

Thanks,

Dave

dahicke July 4, 2013 02:16

Here is an image of the problem
 
1 Attachment(s)
I attached a plot of two points on a 2.5D mesh one behind the other. Both points appears to get a divide by zero; one more than the other.

Attachment 23187


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