Functions
Tensor	tensor (double vx, double vy, double longitudinal, double transverse, double molecular)
	Form the velocity-aligned mechanical-plus-molecular dispersion tensor.

double	faceFlux (Tensor a, Tensor b, double nx, double ny, double dl, double dr, std::array< double, 2 > armL, std::array< double, 2 > armR, std::array< double, 2 > gradL, std::array< double, 2 > gradR, double left, double right, double width)
	Evaluate a harmonic-normal dispersive exchange with deferred nonorthogonal correction.

Function Documentation

◆ faceFlux()

double openswmm::twoD::dispersion::faceFlux	(	Tensor	a,
		Tensor	b,
		double	nx,
		double	ny,
		double	dl,
		double	dr,
		std::array< double, 2 >	armL,
		std::array< double, 2 >	armR,
		std::array< double, 2 >	gradL,
		std::array< double, 2 >	gradR,
		double	left,
		double	right,
		double	width )

inline

Evaluate a harmonic-normal dispersive exchange with deferred nonorthogonal correction.

Parameters

[in]	a	Left dispersion tensor multiplied by left water cross-section per edge width (theta*thickness), m3/s.
[in]	b	Corresponding right weighted tensor, m3/s.
[in]	nx	Finite X component of the unit left-to-right face normal.
[in]	ny	Finite Y component of the same normal.
[in]	dl	Positive left centroid-to-face normal distance, m.
[in]	dr	Positive right centroid-to-face normal distance, m.
[in]	armL	Value-owned left centroid-to-face XY displacement, m.
[in]	armR	Value-owned right centroid-to-face XY displacement, m.
[in]	gradL	Value-owned left concentration gradient, native concentration per m.
[in]	gradR	Corresponding right gradient.
[in]	left	Finite left dissolved concentration in native species units.
[in]	right	Finite right dissolved concentration in the same units.
[in]	width	Finite nonnegative shared edge length, m.

Returns: Signed species inventory rate in native concentration*m3/s, positive left-to-right; zero if either normal tensor coefficient or normal distance is not positive.

Note: Pure arithmetic; no positivity/donor-budget limiter is applied here, no arrays retained or state mutated. Caller supplies finite coherent geometry/tensors and scales/limits the result for its accepted timestep.

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Tensor openswmm::twoD::dispersion::tensor	(	double	vx,
		double	vy,
		double	longitudinal,
		double	transverse,
		double	molecular )

inline

Form the velocity-aligned mechanical-plus-molecular dispersion tensor.

Parameters

[in]	vx	Finite porewater X velocity, m/s.
[in]	vy	Finite porewater Y velocity, m/s.
[in]	longitudinal	Finite nonnegative longitudinal dispersivity, m.
[in]	transverse	Finite nonnegative transverse dispersivity, m.
[in]	molecular	Finite nonnegative molecular diffusion coefficient, m2/s.

Returns: Value-owned symmetric dispersion tensor, m2/s; isotropic molecular tensor when speed is not positive. No allocation/input validation or mutation.

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