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Parameter or frequency sweep for local or global variables

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Hello,

How can I correctly define and then plot my local variables that depend on frequency, following a frequency domain study (frequency sweep)?

I am using AC/DC module for a simple AC electrokinetics problem. My variable is a vector of force that depends on the electric field at a point, and frequency-dependent effective polarisation, alpha. Effective polarisation is in turn dependent on complex permittivity of the two materials that make the structure.

I defined the complex permittivities (eps_1 and eps_2) as parameters that depend on another parameter, frequency 'freq'. Alpha is a local variable given as an expression of the eps_1 and eps_2. Force is another vector variable whose X and Y components are given as expressions in alpha, Ex.norm, and Ey.norm.

Q1. I am unable to plot alpha(freq) from a frequency domain study, frequency sweep. I therefore don't trust my results for force. How could I verify the values of eps_1/2, and alpha for different frequencies? or plot them against frequency?

Q2. How can I ensure the values of the parameters specified are indeed changed according to the frequency sweep settings? Should I be defining the frequency-dependent parameters and variables differently?

Many thanks!

1 Reply Last Post 29 nov. 2011, 01:31 UTC−5
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

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Posted: 1 decade ago 29 nov. 2011, 01:31 UTC−5
Hi

study the Results Derived Values node, this generates tables with your values, and you can easily plot your tables (icon on the table border)

--
Good luck
Ivar
Hi study the Results Derived Values node, this generates tables with your values, and you can easily plot your tables (icon on the table border) -- Good luck Ivar

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