Set BgB electron convectivity proportional to diffusivity #671
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theo-brown
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Simulations with the BgB model were showing poor agreement in the shape of the convectivity profiles with similar simulations in other codes.
While JETTO/JINTRAC has quite a complex approach for convectivity (that I have struggled to parse from the source code*), RAPTOR adopts a much more simple method: setting
v_e ∝D_e. In this PR I've switched the TORAX BgB model to use the same method as RAPTOR.* What I had implemented previously in the BgB model was only an additional particle pinch term, rather than the main particle convectivity. This became apparent when comparing the profiles.