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Max value of a field and its coordinates
Posted 19.11.2012, 07:20 GMT-5 Low-Frequency Electromagnetics, Geometry, Parameters, Variables, & Functions, Results & Visualization Version 4.0, Version 4.1, Version 4.2, Version 4.2a, Version 4.3, Version 4.3a, Version 4.3b 5 Replies
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I know that there have been a lot of posts about this topic and I have read many of them but I am still as dumb as before.
I need to find the value of the maximum value of the field in a domain and its r and z coordinates.
I defined a maxop1 operator in model definitions. I then go to the results/derived values and find the value of maxop1(mf.Br,r). It gives me a value which I think is the value of the r-coordinate. However it does not say anything about its value which is what I primarily am interested in.
So i still cannot find out how to calculate the masimum field as well as its r and z coordinates.
Please tell me in a way that I can understand how to do this.
Thanks for any help.
Kamil
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check the doc, the max(myfield) give you the value max(myfield,x) the x coordinates etc, you need to call your max(9 operator 4 times in 3D to get the full info
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Good luck
Ivar
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However I get errors.
I am trying to find the maximum value of the magnetic flux density (r-component) which is mf.Br.
I write max(mf.Br) to find out the maximum value but I get error message saying that the number of parameters does not match.
I try to find out the r-coordinate and type max(mf.Br,r) and get a value but this is the wrong value because I have exported all the field values and their coordinates via a report and can see all the values.
Where can I see the doc? I am using university license. Can it be so that I don't have access to the doc?
Thank you for your reply.
Kamil
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I do not believe there is any difference betzween uni or industrial licence, on the functionality of the software.
But certainly it could be the version 4.0 was an early/first major release version not really ironed out
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Good luck
Ivar
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I have a 1D Plot - Line Graph and I want to plot the "normalized" data, I mean, I want to plot:
mf.Bz/max(mf.Bz), so that the maximum is 1. But this doesn't work: 'max' function requires 2 inputs.
Any suggestion?
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You can use a Maximum coupling operator, which you add from the Definitions node under the Component node. In its settings window, define its source as the same boundaries that you plot mf.Bz along. Notice the name of the maximum operator; by default it is maxop1. After re-solving or updating the solution, you can then plot mf.Bz/maxop1(mf.Bz), which will be "normalized" so that all values are between -1 and 1.
Best regards,
Magnus Ringh, COMSOL