Matthew Anderson

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HAD stands for Hyper AMR Driver. It was written using MPI and Fortran77 and supports parallel, vertex and cell centered adaptive mesh refinement. It also supports hybrid vertex/cell centered refinement schemes. HAD was developed by Steve Liebling at Long Island University. Active development began in 2004. HAD is currently used for relativistic MHD simulations as well as vacuum spacetime evolutions of the Einstein equations. HAD includes a multigrid solver and standard time integrators; HAD supports subcycling of grids in time for full time and space mesh refinement.

HAD has now been released. Download Latest HAD version here (23 Nov 2010).

HAD documentation (HTML)

Some movies:

Colliding polytropes with magnetic field Colliding polytropes with magnetic field
Colliding polytropes with magnetic field (mpg)

psi4 from Colliding polytropes without magnetic field
Re(psi4) from colliding polytropes without magnetic field (mpg)

Relativistic rotor
AMR relativistic rotor on 32 processors with magnetic field. Movie of AMR relativistic rotor with magnetic field using HAD (mpg)

Differentially rotating neutron star with magnetic field on 64 processors. The color map on the isosurface is log10(B^2). The magnetic field initially is very small. Movie of DRNS with magnetic field using HAD (mpg)

orbit orbit
Orbiting polytropes with AMR + collapse to black hole (mpg)

Re(psi4) AMR + collapse to black hole (mpg)

Orbiting collision of binary boson stars with AMR using 64 processors. Work done by Carlos Palenzuela.
Movie of Binary boson stars using HAD (mpg)

Spherical Shock
AMR Spherical shock on 32 processors. Movie of spherical shock using HAD (mpg)