[FLASH-USERS] MRT question

[A. B. Sefkow]

Dear Flash Users,

I am a new Flash user and became interested in the code in order to 
attempt a Magnetic Rayleigh Taylor (MRT) simulation.  I'm still going 
through the provided examples and the manual in order to learn how to 
use the code, but so far it isn't obvious to me how one can specify 
magnetic fields and pressure *beyond* the initialization.  In other 
words, would I need a circuit model to do this in Flash, or is there 
some way to tell the code how I want I(t) [Bx(t),By(t),Bz(t)] to evolve 
(say, at a boundary, and let it diffuse in)?  Along those lines, can 
nonideal MHD parameters be set for different fluids?  I essentially want 
to start really simple, say by just exchanging gravity for magnetics in 
a straight forward RT simulation.

If anybody has a simple RT or MRT setup they would be willing to share 
in order to help a new user learn, I would be much indebted.

Thanks,
Adam