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Positron trapping and release (charged particle tracing + electrostatics). How to optimise?

Posted 9 mars 2016, 10:53 UTC−5 Low-Frequency Electromagnetics, Charged Particle Tracing, Particle Tracing for Fluid Flow, Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers Version 5.2 0 Replies

Ben Marshall
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I was wondering if someone could give any insight on what are the best solver settings for my problem, in terms of solving time vs accuracy. Currently I'm using Strict generalised alpha settings to be safe, but I'm wondering if this is necessary or if there are quicker methods?

I have a 2D-axisymmetric simulation in which the solution of a time-dependent electrostatic study (time-varying electric potentials) is used for a charged particle tracing study.

I am simulating a positron plasma inside a trap and then dumping them by lowering an electric potential gate.

The positrons bounce harmonically between the trap potentials with a period on the order of 100's of nanoseconds, and my simulation is over a period of 8000 nanoseconds.

However, using strict generalised alpha settings, the solver often has a reciprocal time step of 10E12, causing solving time to be very long.

I'm hoping to find information on optimizing the solving time of simulations and how this can affect the accuracy of the simulation.

Thanks in advance for any input on this matter.
0 Replies Last Post 9 mars 2016, 10:53 UTC−5
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