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You should use a Parametric Curve data set to describe the circle around which you want to plot the field. In your description above it looks like you are trying to use a point evaluation to plot the values along a line.

Once you have set up your parametric curve, you can right click on Derived Values, then select Average, then select Line Average. Select the Parametric curve data set as your data source for the calculation.

Hi MortalWombat,

Thank you! I could implement this. However I am still getting single value with respect to time. I want to calculate radial flux density at different points along the circle. For example 36 points (in between 0 to 2 pi). So at each of these 36 points I should be able to calculate radial flux density with respect to time.

With best regards,
Gaurav

Are you able to post your model?

Hi MortalWombat,
I have uploaded the model. I have given a simple 3 phase supply and trying to measure the flux density along a circle of 40mm. I am not able to attach the file. Would it be possible for you to download from this link,
drive.google.com/open?id=0B2tw-aRna17LRVFpT2FGWW9ZdW8

With best regards,
Gaurav

Unfortunately I can't access most cloud based locations from my work PC. (You could try uploading the model with the solutions and mesh stripped out by going to the Study tab and clicking "Clear All Solutions", then going to the Mesh tab and clicking "Clear all Meshes", then saving.

Are you sure the plot is using the correct data set for its source? If you are using a Parametric Curve 3D to define the circle on which you want to plot, is that curve using the correct Data Set for it's source?

Hi,
Thank you! I have uploaded the model now. I am using Parametric Curve 2d to define the circle and later trying to evaluate the solution in table 6 and later I am plotting it to 1D Plot Group 19. It seems, since I am using line average so it is giving an average flux density along the circle at a particular time. What I want is, flux density at different locations along the circle.

With best regards,
Gaurav

Looking at your model I don't think you need to include circles 27 or 28 in your geometry.

You have your steel structure, the rest should be air as a single air domain. You can create a circular region at your 40mm radius and define it as a mesh control domain, that way, you have a contiguous but refined mesh in the region you are interested in. You can then define a Cut point 2D data set with the following values (assuming you want data points every 36 degrees in this example case, adjust the formula to suit your needs):

x: 40*cos(range(0,2*pi/10,1.8*pi))

y: 40*sin(range(0,2*pi/10,1.8*pi))

This will create points (within your refined mesh domain) at which you can evaluate time averaged values for the array of points in the data set.

You do this by right clicking on Derived Values, choose Point Evaluation, then enter your desired expression (in your case "sqrt(rmm.Bx^2+rmm.By^2)"), then at the bottom of the settings screen for the point evaluation, choose the Average operation under the Data Series operation section.

This will give you a table of the time averaged field at the desired points.

Hope this helps...

Hi,
Thanks a lot! I could evaluate radial flux density at different data points. I have removed circle 28 and kept only one circle at 40mm radius to have a refined mesh in that domain. Is it the same you wanted to convey? I have one more doubt. I want to calculate this expression at each instant of time. I can choose them manually from the time selection in point evaluation. Is there any way by which I can calculate at each point with respect to time? Please have a look to my model.

With best regards,
Gaurav

What you have done should work just fine.

To create a table of point values as a function of time, you can duplicate the previously created derived value group, but choose "none" in the "data series operation" section. Right click the new derived value definition and choose Evaluate/New Table. A table of point values will appear showing the values of each point at all of the different time points.

Hi,

Thank you! It is working now.

With best regards,
Gaurav