How to read the data in Comsol in real time from the Matlab function in Comsol?

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wXsDl 2023-3-11

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https://ww2.mathworks.cn/matlabcentral/answers/1926795-how-to-read-the-data-in-comsol-in-real-time-from-the-matlab-function-in-comsol

回答： Sivapriya Srinivasan 2023-3-30

function out = test(x)

x = 0;

out = x - mphinterp(model,'actd.p_t','coord',[0.5;0;0]);

end

This function works in Comsol, but always outputs 0. How to read the values in the Comsol model in real time and output them in real time after calculation in Matlab?

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Answer 1

Sivapriya Srinivasan 2023-3-30

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Hello,

The given function test(x) in COMSOL always outputs 0. To read the values in the COMSOL model in real-time and output them in real-time after calculation in MATLAB, the “mphinterp” function can be used. However, the issue with the given function is that the value of x is always set to 0, so the output of this function will always be 0.

To read the values in the COMSOL model in real-time, the “mphinterp” function can be used with the appropriate arguments. This function can be used to interpolate the solution data at a specified set of coordinates.

To output the interpolated values in real-time after calculation in MATLAB, the “fprintf” function can be used to print the values to the command window or to a file.

In summary, to read the values in the COMSOL model in real-time and output them in real-time after calculation in Matlab, the mphinterp() function can be used with the appropriate arguments. The value of x in the given function test(x) should be changed to the appropriate coordinates, and the fprintf() function can be used to output the interpolated values in real-time

Hope this helps!