Discussion Forum

I think the integration does not consider the 2D axisymmetry. When I do the integration, I need to add the factor 2*pi*r manually.

Best!
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Pu, ZHANG
DTU Fotonik

I would consider the the results as erroneous, as it was defined during the models start, that we model a 2D-axisymmetric body. The modeling respects this 3dimensionality. But this probe does not. And there is no hint, that it calculates a different integral.
So as long as You don't control the results with an analytical approach and find they are wrong, You expect they are correct, what is misleading.

I don’t know why COMSOL does not offer the “Compute Integral in Revolved Geometry” check box for Probes as it offers it for Integration Couplings. There are two very simple workarounds. The first is to multiply the integrated expression by 2*pi*r manually as stated above. The other is to define an Integration operator, select the revolved geometry option and use that integration operator in your Probe.

If in doubt about whether COMSOL is accounting for the revolved geometry automatically or not check the units reported by COMSOL for the Probe.

Nagi Elabbasi
Veryst Engineering

The integral and average probes indeed lack options for computing surface and volume integrals in 1D and 2D axisymmetry, respectively. We will add this in the next release.

In the meantime, use either of the workarounds suggested by Nagi.

Hi
Do you know if this problem has been solved in COMSOL 5.0?

And it hasn't, what I have to do touso the workaround suggested by Nagi??

Thank you!

Do you know if this problem has been solved in COMSOL 5.0?

Yes, this functionality is available in 5.0.

Hi,

I tried to use it yesterday, but it didn't work.
Do I have to do something else?

I tried to use it yesterday, but it didn't work.

Can you elaborate on what you did and what happened? Maybe you should contact COMSOL Support.