Pressure Non-Equilibrium type boundary conditions from Guo, Z., & Shi, B. (2002). "Non-equilibrium extrapolation method for velocity and pressure boundary conditions in the lattice Boltzmann method." Chinese Physics, (November 2016).
The incoming densities are updated as macroscopic values for : - density is defined in config file as pressure - velocity is extrapolated from fluid node
Usage
boundary_condition = {
{ label = 'outlet',
kind = 'pressure_neq',
pressure = 'press',
}
}
variable = {
name = 'press',
ncomponents = 1,
vartype = 'st_fun',
st_fun = 0.0
}
This subroutine's interface must match the abstract interface definition boundaryRoutine in bc/mus_bc_header_module.f90 in order to be callable via fnct function pointer.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(boundary_type) | :: | me |
global boundary type |
|||
| real(kind=rk), | intent(inout) | :: | state(:) |
Current state vector of iLevel |
||
| real(kind=rk), | intent(in) | :: | bcBuffer(:) |
state values of boundary elements of all fields of iLevel |
||
| type(glob_boundary_type), | intent(in) | :: | globBC |
scheme global boundary type |
||
| type(tem_levelDesc_type), | intent(in) | :: | levelDesc |
iLevel descriptor |
||
| type(treelmesh_type), | intent(in) | :: | tree |
Treelm Mesh |
||
| integer, | intent(in) | :: | nSize |
size of state array ( in terms of elements ) |
||
| integer, | intent(in) | :: | iLevel |
the level On which this boundary was invoked |
||
| type(tem_time_type), | intent(in) | :: | sim_time |
global time information |
||
| integer, | intent(in) | :: | neigh(:) |
connectivity array corresponding to state vector |
||
| type(mus_scheme_layout_type), | intent(in) | :: | layout |
stencil layout information |
||
| type(mus_field_prop_type), | intent(in) | :: | fieldProp |
fluid parameters and properties |
||
| integer, | intent(in) | :: | varPos(:) |
pointer to field variable in the state vector |
||
| integer, | intent(in) | :: | nScalars |
number of Scalars in the scheme var system |
||
| type(tem_varSys_type), | intent(in) | :: | varSys |
scheme variable system |
||
| type(mus_derVarPos_type), | intent(in) | :: | derVarPos |
position of derived quantities in varsys |
||
| type(mus_physics_type), | intent(in) | :: | physics |
scheme global boundary type |
||
| integer, | intent(in) | :: | iField |
current field |
||
| type(mus_mixture_type), | intent(in) | :: | mixture |
mixture info |