ezan
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2-D Fortran CFD code for tornado-like vortices
The source code is here: https://github.com/bfiedler/ezan/blob/main/ezan3_2025.tar.gz
The eza in the name is for easy axisymmetric. Perhaps n is new and 3 is version? I believe this code is what I used as the companion axisymmetric code in my 2009 QJ article. It produces slightly difference results than the code for axisymmetric simulations prior to 2009, mainly because the viscosity profile was simplified for compatibility with the 3-D Fortran CFD code for tornado-like vortices.
wget https://github.com/bfiedler/ezan/blob/main/ezan3_2025.tar.gz gunzip ezan3_2025.tar.gz tar xvf ezan3_2025.tar cd ezan3 ./Runall
This will require about 15 minutes of wall clock on an ancient PC with an i7 chip.
Domain and grid
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| The r-z plane of the cylindrical domain. The perpetual buoyancy the drives the flow is contoured. The stretched grid is shown. |
Time history of extremes
Animation of entire time
Zoom in time and space
Note the change in contour intervals, so the extremes can be detected.
ezan.1743782843.txt.gz · Last modified: 2025/04/04 11:07 by admin