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Time sweep + parametric sweep
Posted 2012年6月27日 GMT-4 14:17 Low-Frequency Electromagnetics, Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD), Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization, Studies & Solvers 1 Reply
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1. Can I couple the parametric sweep with time dependent solver?
This is what I need: I am applying a set of voltages to a resistor and plotting the joule heating, using parametric sweep. I want to be able to apply these voltages as a function of time, i.e.: in the output plot, as I sweep time from say 1s to 10s, I must be able to see the applied voltage change in steps of, say, 1V every second.
2. Is there a way to apply user defined functions in the parametric sweep?
This is what I need: I am applying a set of voltages to a resistor and plotting the joule heating, using parametric sweep. I want to be able to apply these voltages as a function of time, i.e.: in the output plot, as I sweep time from say 1s to 10s, I must be able to see the applied voltage change in steps of, say, 1V every second.
2. Is there a way to apply user defined functions in the parametric sweep?
1 Reply Last Post 2012年6月27日 GMT-4 14:32
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Posted:
1 decade ago
Hi
I'm not sure I fully undersand youre case.
But indeed you can couple a parametric sweep changing the voltage by steps i.e. V0, and then launching a time dependent solver running from 0 to 10, and the BC final voltage can well be a mix of functions like
V0*step(t[1/s])*sin(2*pi*freq[Hz]*t[1/s])
or whatever you might invent (units might not be required if already defined)
For your information there are TWO types of solver sweeps: the specific node "parametric sweep" that changes a parameter then regenerate your geometry, your mesh, the physics and the study, and loops around. Each time the solver will restart, with a different parameter, possible a different shape in the geometry via the parameter change, and then it applies YOUR INITIAL CONDITIONS, always the same over and over again.
The other solver parametric sweep is done i.e. in the "stationary" case, with the advanced node tab "Continuation", this will loop the solver sequences, BUT WILL NOT regenerate your geometry, nor your mesh and will use your initial conditions for the FIRST solver run, but will then use the last solver results as initial conditions for the next parameter sweep initial conditions.
Some other solvers allows to mix a continuation sweep, while a" time series" solver is by itself already a sort of continuation sweep, but of the special parameter "t" the time
--
Good luck
Ivar
I'm not sure I fully undersand youre case.
But indeed you can couple a parametric sweep changing the voltage by steps i.e. V0, and then launching a time dependent solver running from 0 to 10, and the BC final voltage can well be a mix of functions like
V0*step(t[1/s])*sin(2*pi*freq[Hz]*t[1/s])
or whatever you might invent (units might not be required if already defined)
For your information there are TWO types of solver sweeps: the specific node "parametric sweep" that changes a parameter then regenerate your geometry, your mesh, the physics and the study, and loops around. Each time the solver will restart, with a different parameter, possible a different shape in the geometry via the parameter change, and then it applies YOUR INITIAL CONDITIONS, always the same over and over again.
The other solver parametric sweep is done i.e. in the "stationary" case, with the advanced node tab "Continuation", this will loop the solver sequences, BUT WILL NOT regenerate your geometry, nor your mesh and will use your initial conditions for the FIRST solver run, but will then use the last solver results as initial conditions for the next parameter sweep initial conditions.
Some other solvers allows to mix a continuation sweep, while a" time series" solver is by itself already a sort of continuation sweep, but of the special parameter "t" the time
--
Good luck
Ivar