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This code simulated Model Waleffe flow in a retangular domain.

To build:

  1. Edit Makefile to point to netcdf & fftw
  2. make;make install

To generate random initial condition:

  1. Ensure UTIL in makefile is set as randIC
  2. make util
  3. ./randIC.out
  4. This produces state0000.cdf.dat
  5. Rename to state.cdf.in for use as initial condition.
  6. If state relaminarises then increase scl & recompile, or run at higher Re.

To run.

  1. Copy main.info, main.out & state.cdf.in to folder.
  2. Run ./main.out
  3. vel_energy.dat keeps a running output of the total energy.
  4. Delete RUNNING file to softly kill run.
  5. For parallel simulation edit _Np in parallel.h & recompile.

To control.

  1. program/parameters.f90 contains all parameters to be edited.
  2. Recompile.
  3. main.info has a copied of the parameters used at compilation.

To plot output.

  1. In matlab [x,z,u]=GridUy('state.cdf.in','U',0.) extracts the U field at y=0.
  2. contourf(x,z,u) to visualise.

Questions? Feel free to contact me.

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