walker::VelocityCoeffHydroTimeScale class

Velocity equation coefficients policy with DNS hydrodynamics time scale

Public static functions

static auto type() -> ctr::CoeffPolicyType noexcept: Coefficients policy type accessor.

VelocityCoeffHydroTimeScale(kw::sde_c0::info::expect::type C0_, kw::sde_c0::info::expect::type& C0, std::array<tk::real, 9>& dU): Constructor: initialize coefficients.

void update(char depvar, char, const std::map<tk::ctr::Product, tk::real>& moments, const tk::Table<1>& hts, ctr::DepvarType solve, ctr::VelocityVariantType, kw::sde_c0::info::expect::type C0, tk::real t, tk::real& eps, std::array<tk::real, 9>& G) const: Update the model coefficients sampling the hydrodynamics time scale from a prescribed function table.

Constructor: initialize coefficients.

Parameters
C0_ in	Value of C0 parameter in the Langevin model
C0 in/out	Value of to set the C0 parameter in the Langevin model
dU in/out	Prescribed mean velocity gradient

Update the model coefficients sampling the hydrodynamics time scale from a prescribed function table.

Parameters
depvar in	Dependent variable for of this SDE
moments in	Map of statistical moments
hts in	Table to take hydrodynamics time scale from
solve in	Configured dependent variable to solve for
C0 in	Coefficient C0 in the Langevin model
t in	Physical time to sample hydrodynamics time scale at
eps in/out	Dissipation rate of turbulent kinetic energy
G in/out	Coefficient tensor (3x3) in the Langevin equation

Update the dissipation rate (eps) based on eps/k (from DNS) and the turbulent kinetic energy (k) (from the SDE)