Indicates whether the source terms in transposed gradient and velocity divergence should be taken into account in the momentum equation. In the compressible module, these terms also account for the volume viscosity (cf. viscv0 and iviscv) :
Option to switch on massflux prediction before momentum solving to be fully conservative in momentum over time for variable density flows. This option is to be removed.
indicates whether the dynamic field should be frozen or not:
1: true
0: false (default)
In such a case, the values of velocity, pressure and the variables related to the potential turbulence model ( , , , , , , turbulent viscosity) are kept constant over time and only the equations for the scalars are solved.
Also, if iccvfg = 1, the physical properties modified in cs_user_physical_properties will keep being updated. Beware of non-consistencies if these properties would normally affect the dynamic field (modification of density for instance).
Useful if and only if nscal 0 and the calculation is a restart.
iescal indicates the calculation mode for the error estimator iespre, iesder, iescor or iestot for the Navier-Stokes equation:
0: estimator not calculated,
1: the estimator is calculated, without contribution of the volume,
2: the estimator is calculated, with contribution of the volume (norm ), except for iescor, for which is calculated. The names of the estimators appearing in the log and the post-processing are made up of the default name (given before), followed by the value of iescal}. For instance, EsPre2 is the estimator iespre calculated with iescal = 2.
Option to switch on massflux prediction before momentum solving to be fully conservative in momentum over time for variable density flows. This option is to be removed.
indicates the algorithm for velocity-pressure coupling:
0: standard algorithm,
1: reinforced coupling in case calculation with long time steps
Always useful (it is seldom advised, but it can prove very useful, for instance, in case of flows with weak convection effects and highly variable viscosity).
0: staggered time scheme. On the time grids, the velocity is half a time step behind the density and the buoyant scalar. (See the thesis of [Pierce:2004])
1: collocated time scheme. On the time grids, the velocity is at the same location as the density and the buoyant scalar. (See [Ma:2019])
Indicates whether the source terms in transposed gradient and velocity divergence should be taken into account in the momentum equation. In the compressible module, these terms also account for the volume viscosity (cf. viscv0 and iviscv) :