modele_turbulence_hyd_deriv

Basic class for turbulence model for Navier-Stokes equations.

Parameters:

[turbulence_paroi] (type: turbulence_paroi_base) Keyword to set the wall law.
[dt_impr_ustar] (type: float) This keyword is used to print the values (U +, d+, u$\star$) obtained with the wall laws into a file named datafile_ProblemName_Ustar.face and periode refers to the printing period, this value is expressed in seconds.
[dt_impr_ustar_mean_only] (type: dt_impr_ustar_mean_only) This keyword is used to print the mean values of u* ( obtained with the wall laws) on each boundary, into a file named datafile_ProblemName_Ustar_mean_only.out. periode refers to the printing period, this value is expressed in seconds. If you don\'t use the optional keyword boundaries, all the boundaries will be considered. If you use it, you must specify nb_boundaries which is the number of boundaries on which you want to calculate the mean values of u*, then you have to specify their names.
[nut_max] (type: float) Upper limitation of turbulent viscosity (default value 1.e8).
[correction_visco_turb_pour_controle_pas_de_temps] (type: flag) Keyword to set a limitation to low time steps due to high values of turbulent viscosity. The limit for turbulent viscosity is calculated so that diffusive time-step is equal or higher than convective time-step. For a stationary flow, the correction for turbulent viscosity should apply only during the first time steps and not when permanent state is reached. To check that, we could post process the corr_visco_turb field which is the correction of turbulent viscosity: it should be 1. on the whole domain.
[correction_visco_turb_pour_controle_pas_de_temps_parametre] (type: float) Keyword to set a limitation to low time steps due to high values of turbulent viscosity. The limit for turbulent viscosity is the ratio between diffusive time-step and convective time-step is higher or equal to the given value [0-1]

Keywords derived from mod_turb_hyd_ss_maille

modele_turbulence_hyd_null

Synonyms: null

Inherits from: modele_turbulence_hyd_deriv

Null turbulence model (turbulent viscosity = 0) which can be used with a turbulent problem.

Parameters:

[turbulence_paroi] (type: turbulence_paroi_base) Keyword to set the wall law.
[dt_impr_ustar] (type: float) This keyword is used to print the values (U +, d+, u$\star$) obtained with the wall laws into a file named datafile_ProblemName_Ustar.face and periode refers to the printing period, this value is expressed in seconds.
[dt_impr_ustar_mean_only] (type: dt_impr_ustar_mean_only) This keyword is used to print the mean values of u* ( obtained with the wall laws) on each boundary, into a file named datafile_ProblemName_Ustar_mean_only.out. periode refers to the printing period, this value is expressed in seconds. If you don\'t use the optional keyword boundaries, all the boundaries will be considered. If you use it, you must specify nb_boundaries which is the number of boundaries on which you want to calculate the mean values of u*, then you have to specify their names.
[nut_max] (type: float) Upper limitation of turbulent viscosity (default value 1.e8).
[correction_visco_turb_pour_controle_pas_de_temps] (type: flag) Keyword to set a limitation to low time steps due to high values of turbulent viscosity. The limit for turbulent viscosity is calculated so that diffusive time-step is equal or higher than convective time-step. For a stationary flow, the correction for turbulent viscosity should apply only during the first time steps and not when permanent state is reached. To check that, we could post process the corr_visco_turb field which is the correction of turbulent viscosity: it should be 1. on the whole domain.
[correction_visco_turb_pour_controle_pas_de_temps_parametre] (type: float) Keyword to set a limitation to low time steps due to high values of turbulent viscosity. The limit for turbulent viscosity is the ratio between diffusive time-step and convective time-step is higher or equal to the given value [0-1]