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FLUSI and Fields 1.7.5
This guide collects notes on the combination of FluSI and Fields 1.7.5, which is a wavelet and Fourier postprocessing tool for a wide range of applications, such as coherent vortex extraction and the like
- in the source code, we commented out references to JMFFT (which seems to be for cray machines)
- also seconds (in one of the
clock.F
file) - we installed fftw-3.1 from the source folder contained in the archive
./configure --prefix='/home/engels/Documents/Research/Fields/Field.1.7.5/Sources/Field_includes/fftw' --enable-float
make clean ; make ; make install
- The makefile added the
-lfft3
but we had to change this for-lfftw3f
since this is what is in-LSources/Field_includes/fftw/lib/
- Fields cannot be build with
-fimplicit-none
as some routines really do use implicit variable declaration
Unfortunately, fields does not support HDF5 files (though the 'file' menu states otherwise). We have to create a binary file using flusi in postprocesding mode:
./flusi --postprocess --hdf2bin ux_006000.h5 vel.1
./flusi -p --hdf2bin ux_006000.h5 vel.1
This converts the file ux_006000.h5
to vel.1
. note this tool is serial (no mpi-parallelism).
Note: using code version around 25/11/2016
, or commit d59feea04471dae2ddc19f3a44fcfc17c3ed4efb
the hdf2bin currently writes like this:
write (12) (((field_out (ix,iy,iz), ix=0, nx-1), iy=0, ny-1), iz=0, nz-1)
So the correct setting in FIELDS is X-FAST
and LITTLE-ENDIAN
start fields using
./field.exe -X1024 -Y1024 -Z512
specifying the size of the arrays
you can read such a file using
f l f "vel" q
commands. The program reads vel.1, vel.2 vel.3
using ./flusi -p --field-analysis vorx_000050.h5 vory_000050.h5 vorz_000050.h5 outfile.data (which point to vor.1 vor.2 vor.3) we checked that mean energy is 1642.32300 which is what fields returns as well -> correctly read
In my case, I want to compute
!
! im hauptmenue wird hier die filterung (bandpass) im wavelet raum angewendet
! zuerst lowpass
F
r
w
5 ! alles <= J=5 gelöscht
a
! jetzt highpass
r
W
6 ! alle > J=6 gelöscht. es verbleibt skala 6
a
! raus ins hauptmenu
q