Algorithm Options

The following inputs must be preceded by “incflo.”

	Description	Type	Default
advection_type	Advection scheme (options: Godunov, MOL, BDS). BDS is not available with an EB geometry	string	Godunov
advect_momentum	Advect momentum (otherwise use convective differencing)	bool	false
advect_tracer	evolve the tracer equation(s)?	bool	false
trac_is_conservative	Is tracer conserved? If specified, one entry required per tracer	int	1
ntrac	number of tracers	int	1
use_temperature	include temperature equation? (not available with MOL)	bool	false
constant_density	Only evolve the continuity equation if false	bool	true
ro_0	density (if constant)	Real	1.0
diffusion_type	Diffusion type (0 = Explicit, 1 = Crank-Nicolson, 2 = Implicit)	int	2 (Implicit)
mu	viscosity (if constant)	Real	1.0
mu_s	scalar diffusivity	Real(s)	0.0
mu_T	thermal conductivity	Real	0.0
use_divu_source	Use the constraint \(\nabla \cdot U = S\) instead of \(\nabla \cdot U = 0\) (see the Fluid Equations section). Requires advection_type = Godunov and the nodal projection; not yet implemented with embedded boundaries, RZ, direction dependent boundaries, or refinement ratios other than 2 or 4	bool	false
use_cc_proj	Use cell-centered rather than nodal pressure; this changes the approximate projection we use	bool	false
use_tensor_solve	In velocity solve, use multicomponent \(\nabla \cdot \tau\) otherwise use separate solves for each velocity component	bool	true