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How to use a previous solution of a set of equations as a function/variable in a new set of equations?
Posted 6 févr. 2018, 01:51 UTC−5 Parameters, Variables, & Functions, Studies & Solvers Version 5.3 1 Reply
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Hi, I have a solutions for a set of equations. I want to check the stability of solution by adding perturbations about the solutions. e.g X1(x) +alpha(x) and X2(x)+ sigma(x) where x is the space variable, X1(x) and X2(x) are my original solutions and alpha(x) and beta(x) are perturbations. I will solve for alpha(x) and beta(x) in new set of equations. How can we define X1(x) and X2(x) as variables such that they are solutions of previous set of equations and take values from a data table or file or any other way?
-------------------KB
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Hi,
Use an expression containing the withsol() operator to pick values from another solution. For more information, see the user's guide. There are also a number of threads on this forum, if you search for 'withsol'.
Regards,
Henrik
-------------------Henrik Sönnerlind
COMSOL