teffitself. In fact,
teffis only used to control material properties at the outer boundary. Its value should be close to the expected effective temperature of the model.
constant: In the standard ``solar'' case the constant gravity specified with
real gravis directed downward in x3 direction.
localboxtide: This activates a simple model for the action of a tidal wave on convection in a local box model. It adds to the case of
constantgravity a potential which is harmonic in space and time according to
central: For the ``supergiant'' case a central potential is assumed with an origin at x=0. The stellar mass as well as inner and outer smoothing radius have to be specified.
r0_grav, specified with
r1_grav, specified with
real r0_gravis relevant). But a value somewhat larger than the remotest corner of the box effectively cancels this artificial smoothing in the outer layers without changing the formula for the potential.
real r2_gravinstead of
real r1_gravmeans that a potential function more appropriate for a polytropic stellar interior model is used. It can be set, e.g. with
real r1_gravis used. This parameter is similar to
real r1_grav, i.e., it enlarges the pressure scale hight in the outer layers but does not change the smoothing formula in the center. This parameter is only effective if
real r1_gravis set to zero.
real r1_radcan specify a radius beyond which only positive contributions of the radiative energy transport to the energy budget are taken into account. This ruins the conservativity of the code in these layers and should be applied only in very remote corners which are then considered only as sort of extended boundary region but not as part of the ``real'' model. The parameter can be specified e.g. with
0.0(default) or below deactivates this feature.
r0_grav, the heating radius
r0_corecan be specified separately, e.g. with
r0_gravis used as the radius of the core.
nu_rotation0. To switch it off even for non-zero rotation rate, the parameter
centrifugal_forcecan be used, e.g. by setting
on: This is the default and can be set even for non-rotating objects.
off: This skips the application of the centrifugal force in case of a non-zero rotation rate. In this case, only the Coriolis force is applied.
centrifugal_forceis set to
off. In addition, a Coriolis force are applied during the hydrodynamics step.