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Search hiden variable.
Posted 11.01.2012, 05:54 GMT-5 Fluid & Heat, Materials, Studies & Solvers Version 4.2a 4 Replies
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Thank you for your help and good advice on how to use COMS.
But I have one question esta:
- Can be scan model and look for there certainly variable or expression, and possibly change their values.
I mean the hidden variables and expressions.
Thank you very much.
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If I understand your question correctly:
You have now, in 4.2, a better and more complete list of COMSOL internal variables distributed around in the pdf doc, try a search.
You can observe them by turning on the "Options - Preferences - Show - Equation" view and look into the lowest level nodes.
In this equation view you can change the expressions, but you must know what you are doing: you have a reset to get back to COMSOL defaults too ;)
You can also, for a solved model, use the "Results - Derived Values - and select a Global variable or an Integration variable" and there in the "Expression" field do CNTRL+Space or hit the red/green >< icon (or the + icon)
And during a solver sequence you might decide to change (sweep) some variables, for this check the doc: Parametric Sweep, there are two types, take acre to understand their difference. More on that already on the Forum, try a search there too
--
Good luck
Ivar
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There is also another problem.
This problem is to I get erreoe messages aboutvariable or expession , but Ican't find where is this erroro is because in place where tihis error is no dos not exists sach variable or is hiden.
Thank.
By.
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Sometimes variables call variables and the chain can be long.
My advice: go carefully through your model, check that you have all required fields, and that none are "blank" or red or orange (the latter is a unit warning, not strictly an error)
--
Good luck
Ivar
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there is list of error where is'nt exists i fact.
For example sol1/st1 or t1 but study is stafionary.
Or errors in expression in 2d source .
expresion is pa1/t but must pa*1/T
or ih.Qet but correct is ih.Qeo or Qeo*T
this errors is hard find and correct.
How can I correct this hident or ono exist eoorors.
Thank.