“BDF2-SchemeO2” : 2nd order Backward Differentiation Formula for the time discretization. Semi-implicit scheme on the viscous or diffusion terms. 2nd order spatial discretization (centered for the viscous/diffusion terms, different schemes are available for the convection/advection terms - see further).
Preferentially used for incompressible or low Mach-number flows without multi-species components (except two phase incompressible flows).
“CN-SchemeO2” : 2nd order Crank-Nicolson scheme (semi-implicit scheme on the viscous or diffusion terms. 2nd order spatial discretization (centered for the viscous/diffusion terms, different schemes are available for the convection/advection terms - see further).
Preferentially used for incompressible or low Mach-number flows without multi-species components (except two phase incompressible flows). Not for the release SUNFLUIDH_EDU .
“BDF1-SchemeO2” : 1st order Backward Differentiation Formula. Semi-implicit scheme on the viscous or diffusion terms. 2nd order spatial discretization (centered for the viscous/diffusion terms, different schemes are available for the convection/advection terms - see further). Not for the release SUNFLUIDH_EDU .
“ExplicitPredCorO2-SchemeO2-Knio” : Explicit predictor-corrector scheme : 2nd order Adams Bashforth - Runge-Kutta scheme (Knio et al., JCP 1998).
This scheme is mainly used for low Mach Number flows with multi-species components. Not for the release SUNFLUIDH_EDU .
“ExplicitPredCorO2-SchemeO2-Njam” : 2nd order Explicit scheme based on Strang's operator-splitting with a multi-timestep procedure on the viscous/diffusion terms (2nd order Adams Bashforth - Runge-Kutta schemes) The density is explicitly solved from the differential formulation of the equation of state and the Temperature is deduced from the equation of state. The projection method is based on the Chorin's formulation by considering Poisson's Operator with constant coefficients (Njam et al., JCP 1999).
This scheme is mainly used for reactive flows under low Mach number hypothesis. Not for the release SUNFLUIDH_EDU .
“ExplicitPredCorO2-SchemeO2-Rixen” : 2nd order Explicit scheme based on Strang's operator-splitting with multistep a multi-timestep procedure on the viscous/diffusion terms (2nd order Adams Bashforth - Runge-Kutta schemes). The temperature is explicitly solved from the enthalpy equation and the density is deduced from the equation of state. The projection method is based on the Goda's formulation by considering Poisson's Operator with variable coefficients (Rixin Yu et al., JCP 2012). Not for the release SUNFLUIDH_EDU .
“ExplRKO3-CompactSchemeO4” : 4th order hermittian scheme in space + 3rd order explicit Runge-Kutta scheme in time. The projection method is based on the Goda's formulation by considering Poisson's Operator with constant coefficients (Knikker, ijnmf 2008, 2009).
This numerical scheme is used for incompressible or low Mach number flows with or without heat transfer. Not for the release SUNFLUIDH_EDU .
“CN-CompactSchemeO4” : 4th order hermittian scheme in space + semi-implicit Crank-Nicolson scheme in time. The projection method is based on the Goda's formulation by considering Poisson's Operator with constant coefficients (Knikker, ijnmf 2008, 2009).
This numerical scheme is used for incompressible or low Mach number flows with or without heat transfer. Not for the release SUNFLUIDH_EDU .
“RK3CN-CompactSchemeO4” : 4th order hermittian scheme in space + hybrid RK3/Crank-Nicolson scheme in time. The projection method is based on the Goda's formulation by considering Poisson's Operator with constant coefficients (Knikker, ijnmf 2008, 2009).
This numerical scheme is used for incompressible or low Mach number flows with or without heat transfer. Not for the release SUNFLUIDH_EDU .
“CN-SchemeO2-SpecialLowMachFlow”: Crank-Nicolson semi-implicit scheme (as the option 2) with a predictor-corrector procedure for solving species mass fractions and temperature. This numerical scheme is used for low Mach number flows. Not for the release SUNFLUIDH_EDU .