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Meeting Update
Reviewed Matsakos initial conditions
- Initial magnetic field is a dipole outside that transitions to a uniform Z field inside of a sphere of radius R/2. No details of smoothing distance in paper.
- Initial density field is uniform in side a sphere - and is parker wind solution outside
- Velocity is zero inside sphere and parker wind solution outside
- Pressure is isothermal outside (from parker wind), and hydrostatic inside.
- Note they calculate P from radial momentum equation, isothermal EOS, and solution for parker wind velocity. I calculate radial velocity and use density equation to get rho, and isothermal EOS to get pressure.
- Density is constant inside and parker solution outside.
- Gravity is GM/R2 outside, and uniform sphere gravity inside. Note that M used for outside gravity does not equal 4/3 pi r3 rho inside
- Density, velocity, and pressure are stepped on inside of r=1.5 R (however, we cannot do this without analytic solution for non-isotropic parker wind).
- Magnetic field is free to evolve inside and outside.
- They discuss 4 layer model of Matt and Pudritz
- v_poloidal parallel to B_poloidal
- rho and P held constant
- v set to zero ( v_phi is corotating)
- B_poloidal held constant and B_phi is extrapolated inward to not have any poloidal current (curl of B_phi = 0)
- Each of these layers is approximately only 1 zone thick (the surface of the star is 30 zones in radius)
Parallel HDF5 writes
- The development branch of the code now supports parallel HDF5.
- On bluehive need to use astrobear/b3 module
- Need to add -D_PHDF5 to CPPFLAGS in Makefile.inc
- Set lParallelHDF5=.true. in GlobalData namelist.
- Haven't tested this on BGQ.
- If restarting from older files, need to open and rewrite chombo files without lParallelHDF5=.true.
- There is a lReOutput flag that can be set along with lPostProcess to output the HDF5 files in a format compatible with ParallelHDF5=.true. restarts.
New routines for setting up initial/boundary conditions
- Developed these for potential use by Farrukh on Magnetized Kelvin Helmholtz
- Posted: 9 years ago (Updated: 9 years ago)
- Author: Jonathan
- Categories: (none)
Attachments (2)
- Screen Shot 2015-07-28 at 2.57.58 PM.png (109.4 KB) - added by Jonathan 9 years ago.
- Screen Shot 2015-07-28 at 3.08.57 PM.png (49.0 KB) - added by Jonathan 9 years ago.
Download all attachments as: .zip
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