DNDS::Euler::EulerModelTraits< model > Struct Template Reference

Compile-time traits for EulerModel variants. More...

#include <Euler.hpp>

Static Public Attributes
static constexpr int	nVarsFixed = getnVarsFixed(model)
	Number of fixed conservative variables (Eigen::Dynamic for NS_EX).
static constexpr int	dim = getDim_Fixed(model)
	Physics spatial dimension (2 for NS_2D, 3 for all others).
static constexpr int	gDim = getGeomDim_Fixed(model)
	Geometry (mesh) spatial dimension.
static constexpr bool	hasSA = (model == NS_SA || model == NS_SA_3D)
	True for Spalart-Allmaras models (NS_SA, NS_SA_3D).
static constexpr bool	has2EQ = (model == NS_2EQ || model == NS_2EQ_3D)
	True for 2-equation RANS models (NS_2EQ, NS_2EQ_3D).
static constexpr bool	hasRANS = hasSA || has2EQ
	True for any RANS turbulence model (SA or 2-equation).
static constexpr int	nRANSVars = hasSA ? 1 : (has2EQ ? 2 : 0)
	Number of extra RANS transport variables (0, 1, or 2).
static constexpr bool	isExtended = (model == NS_EX || model == NS_EX_3D)
	True for extended/dynamic models (NS_EX, NS_EX_3D).
static constexpr bool	isPlainNS = !hasRANS && !isExtended
	True for plain NS without turbulence or extensions.
static constexpr bool	isGeom2D = (gDim == 2)
	True for 2D geometry models.
static constexpr bool	isGeom3D = (gDim == 3)
	True for 3D geometry models.

Detailed Description

template<EulerModel model>
struct DNDS::Euler::EulerModelTraits< model >

Compile-time traits for EulerModel variants.

Bundles all model-dependent compile-time constants (variable count, dimensions, feature flags) into a single struct, replacing scattered if constexpr chains with clean named traits. All members are static constexpr.

Usage example:

using Traits = EulerModelTraits<NS_SA_3D>;
static_assert(Traits::nVarsFixed == 6);
static_assert(Traits::dim == 3);
static_assert(Traits::gDim == 3);
static_assert(Traits::hasSA);
static_assert(Traits::hasRANS);
static_assert(Traits::nRANSVars == 1);

Future models (reactive, multi-species) should add traits here rather than adding new if-constexpr chains.

Template Parameters

model

The EulerModel enumerant to query traits for.

Definition at line 1085 of file Euler.hpp.

Member Data Documentation

dim

template<EulerModel model>

constexpr int DNDS::Euler::EulerModelTraits< model >::dim = getDim_Fixed(model)

staticconstexpr

Physics spatial dimension (2 for NS_2D, 3 for all others).

Definition at line 1090 of file Euler.hpp.

gDim

template<EulerModel model>

constexpr int DNDS::Euler::EulerModelTraits< model >::gDim = getGeomDim_Fixed(model)

staticconstexpr

Geometry (mesh) spatial dimension.

Definition at line 1092 of file Euler.hpp.

has2EQ

template<EulerModel model>

constexpr bool DNDS::Euler::EulerModelTraits< model >::has2EQ = (model == NS_2EQ || model == NS_2EQ_3D)

staticconstexpr

True for 2-equation RANS models (NS_2EQ, NS_2EQ_3D).

Definition at line 1097 of file Euler.hpp.

hasRANS

template<EulerModel model>

constexpr bool DNDS::Euler::EulerModelTraits< model >::hasRANS = hasSA || has2EQ

staticconstexpr

True for any RANS turbulence model (SA or 2-equation).

Definition at line 1099 of file Euler.hpp.

hasSA

template<EulerModel model>

constexpr bool DNDS::Euler::EulerModelTraits< model >::hasSA = (model == NS_SA || model == NS_SA_3D)

staticconstexpr

True for Spalart-Allmaras models (NS_SA, NS_SA_3D).

Definition at line 1095 of file Euler.hpp.

isExtended

template<EulerModel model>

constexpr bool DNDS::Euler::EulerModelTraits< model >::isExtended = (model == NS_EX || model == NS_EX_3D)

staticconstexpr

True for extended/dynamic models (NS_EX, NS_EX_3D).

Definition at line 1104 of file Euler.hpp.

isGeom2D

template<EulerModel model>

constexpr bool DNDS::Euler::EulerModelTraits< model >::isGeom2D = (gDim == 2)

staticconstexpr

True for 2D geometry models.

Definition at line 1108 of file Euler.hpp.

isGeom3D

template<EulerModel model>

constexpr bool DNDS::Euler::EulerModelTraits< model >::isGeom3D = (gDim == 3)

staticconstexpr

True for 3D geometry models.

Definition at line 1110 of file Euler.hpp.

isPlainNS

template<EulerModel model>

constexpr bool DNDS::Euler::EulerModelTraits< model >::isPlainNS = !hasRANS && !isExtended

staticconstexpr

True for plain NS without turbulence or extensions.

Definition at line 1106 of file Euler.hpp.

nRANSVars

template<EulerModel model>

constexpr int DNDS::Euler::EulerModelTraits< model >::nRANSVars = hasSA ? 1 : (has2EQ ? 2 : 0)

staticconstexpr

Number of extra RANS transport variables (0, 1, or 2).

Definition at line 1101 of file Euler.hpp.

nVarsFixed

template<EulerModel model>

constexpr int DNDS::Euler::EulerModelTraits< model >::nVarsFixed = getnVarsFixed(model)

staticconstexpr

Number of fixed conservative variables (Eigen::Dynamic for NS_EX).

Definition at line 1088 of file Euler.hpp.

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The documentation for this struct was generated from the following file:

• /home/runner/work/DNDSR/DNDSR/src/Euler/Euler.hpp