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Simple optimization in comsol 5.0
Posted 11.04.2015, 11:17 GMT-4 RF & Microwave Engineering, Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization, Studies & Solvers Version 5.2 1 Reply
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However it keeps giving me an error.
In the attached image you can se how I set it up.
A quick summary:
under definitions I have variables, domain 1, 2, 3 and 4.
In variables I have a variable called ratio1 which is basically domain 1 divided by domain 2.
Now in the optimization I try to maximize this variable ratio1
as parameters I have set 3 parameters which have a upper and lower constrain.
When I run this I get an errror saying:
Error in sweep. Failed to evaluate expression
Or it doesn't change the values I've set under Global->definitions->parameters
Attachments:
Hello Bob van de Voort
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I met the same question with you, and now it is solved.
Instead of writing a express of "ratio1" in the objective function directly, you could try to click the "+" which is on the top right corner of objective function, then add the express of "ratio1" in variables.
Hope that it can help you.
Ze.