WIP: Noisy shestakov model #11
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Single and double timescale relaxation decorators. These can wrap other decorators to introduce a timescale.
Use AR noise decorator
Results don't agree with experience with GENE-Tango
AnalyticFluxModel contains the flux calculation, for general p and q values. ShestakovTestProblem fixes p=3, q=-2, defines a source and has an analytic solution.
Input is now p and q, defaulting to 3 and -2 for previous case. Analytic solution updated to work for arbitrary p,q
Modify the Shestakov model flux to more closely model the characteristics of GENE turbulence simulations.
Modified the shestakov_time_dependent.py example
Rather than being classes which implement `get_flux` methods, now functions which replace the `get_flux` method of given object. The motivation is to combine the flux calculation method with the test problem initial and boundary conditions, and exact solution calculation. The goal is to make testing of different iterations and boundary condition calculations simpler.
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Generalisations of the Shestakov transport model, including various noise models, for testing of Tango performance and tuning parameters.
Work in progress.