Download - Coupling the RCM to LFM
RCM - LFM Coupling
• This is the result of a prelimimary test on one-way coupling
• We have used 1 MHD snapshot to provide input data to the RCM
• RCM uses MHD computed magnetic field (for flux tube volumes), pressure and density– Pressure and density are used to estimate
temperature– These variables in turn are used to populate the
initial distribution function
Coupling process
• LFM data is interpolated onto a regular grid– This allows for reasonably fast calculations
when computing such RCM variables as flux tube volume
• The ionospheric electric field for these runs is not taken from the MHD
Results
• After ~4hours R-2 currents form leading to some shielding of the electric field
• Pressure in the inner magnetosphere starts to symmetrize as particles gradient and curvature drift
• Channels of low content flux tubes low pV flux tubes being squirted into the inner magnetosphere
Next Step
• Incorporate MHD computed potential boundary conditions and conductivities
• Use a time-sequence of MHD inputs to do a more realistic run