1D-RANS

1D RANS model simulation at fully developed turbulent channel flow.

This code is programmed for 1D RANS simulation using k-epsilon model to fully developed channel flows. This code is parallelized by OpenMP that you have to set the number of threads.

Various damping function is applied for 1D RANS.

• Van Driest (1954)
• Launder and Sharma (1974)
• Lam and Bremhorst (1981)
• Park et al (1997)

These simulation datas are validated with DNS results (available in http://turbulence.ices.utexas.edu/)

0. Related papers & data

• Related theory : https://www.dropbox.com/s/fxk5e604x3v1yua/4.RANS_model_wallmodel.pdf?dl=0
• Related paper : https://www.dropbox.com/s/7ik7s9a8zik6u4o/Turbulence%20Modeling%20-%20Project1.pdf?dl=0
• Related report : https://www.dropbox.com/s/h8er705m7pk2lsb/Report.pdf?dl=0

1. Setting for 1D RANS code

• Make 'RESULT' folder
• Set the channel-half height
• Set Re_tau and kinetic viscosity
• Set damping function type
• Adjust relaxation factors

2. Output files

• Velocity profile ( U.plt )
• Turbulent kinetic energy ( k.plt )
• Dissipation ( dissipation.plt )
• Damping function ( fm.plt )

3. Code composition

• RANS_main.f90
• RANS_module.f90
• RANS_setup.f90
• RANS_poiseuille.f90
• RANS_getfm.f90
• RANS_getnut.f90
• RANS_getu.f90
• RANS_getprod.f90
• RANS_getk.f90
• RANS_getdis.f90
• RANS_output.f90