Distribution

The main distribution of RFG is located at mulphys.com/rfg. The program was developed and tested on a Linux PC, under RedHat OS. There are two versions of the algorithm: (1) homogeneous isotropic case, and (2) inhomogeneous anisotropic case. The first version simply reproduces the method of Kraichnan [2], and does not include any Netlib routines. The second version can generate anisotropic inhomogeneous vector fields with prescribed anisotropy, and inhomogeneity. It makes use of several Netlib routines, which retrieve diagonal components of the velocity correlation tensor, and handle coordinate transformations in and out of coordinate system aligned with the tensor's principal axes. The second version thus consists of both RFG routines (C) and Netlib routines (Fortran). The distributions contain the following files:

• Homogeneous isotropic case:

  makefile     # Makefile
  rfg.h        # RFG header file
  vecalg.h     # Vector algebra macros
  gauss.c      # Gaussian random number generator
  rfg.c        # RFG routine
  random.f     # Random number generator
  rfgtest.f    # RFG test
  

• Inhomogeneous anisotropic case:

  makefile      # Makefile
  rfg.h         # RFG header file
  vecalg.h      # Vector algebra macros
  diag.c        # Diagonalization routines
  gauss.c       # Gaussian random number generator
  rfg.c         # RFG routine
  phytag.f      # Auxiliary Netlib routine
  random.f      # Random number generator
  rfgtest.f     # RFG test 
  tql1.f        # Auxiliary Netlib routine
  tql2.f        # Auxiliary Netlib routine
  tred1.f       # Auxiliary Netlib routine
  tred2.f       # Auxiliary Netlib routine
  

In addition to this both distributions include README files containing the compilation instructions.