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How to obtain a variable(x,y,t) with Matlab
Posted Mar 21, 2016, 12:59 p.m. EDT LiveLink for MATLAB 3 Replies
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For a variable, say pressure p, is a function of x,y,t.
In Matlab, we usually have p(x,y) for pressure at any point we want to know.
However, in Comsol linked with Matlab, how can I obtain pressure at any time and anywhere?
Thanks for any help.
In Matlab, we usually have p(x,y) for pressure at any point we want to know.
However, in Comsol linked with Matlab, how can I obtain pressure at any time and anywhere?
Thanks for any help.
3 Replies Last Post Mar 21, 2016, 6:38 p.m. EDT
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Posted:
9 years ago
I'm not sure when time is included. However, in the the frequency domain with only the spatical coordinates (x,y,z), you may try:
var = mphinterp(model, ' abs(p)' , 'coord' , Position_Matrix);
where you should replace 'abs(p)' with cetain variable that you want to measure, and set Position_Matrix as the points where you want to take values.
You may check the API documentations for functions how to extract values in any case. Most may start with mph*().
var = mphinterp(model, ' abs(p)' , 'coord' , Position_Matrix);
where you should replace 'abs(p)' with cetain variable that you want to measure, and set Position_Matrix as the points where you want to take values.
You may check the API documentations for functions how to extract values in any case. Most may start with mph*().
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Posted:
9 years ago
Really appreciate your replying. I searched for mphinterp in API document, but I failed to find it. I am afraid it due to different versions. I am using Comsol 4.2 now.
Can you give me a little more descriptions of this term or key words? Thanks.
Can you give me a little more descriptions of this term or key words? Thanks.
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Posted:
9 years ago
You should be able to find the matlab livelink pdf help document in your comsol installation directory. Usually it is in <comsol path>/doc/pdf. You may check that.
Otherwise, you may google something like "matlab livelink comsol", there will also be documents available up in the first few results.
Otherwise, you may google something like "matlab livelink comsol", there will also be documents available up in the first few results.