#include <Landuse.hpp>

Collaboration diagram for openswmm::landuse::LanduseSolver:

Public Member Functions
void	init (int n_landuses, int n_pollutants)

void	computeBuildup (SurfaceQualitySoA &sq, const double area, const double curb_length, double dt, int n_subcatch)
	Batch compute buildup for all subcatchments.

void	computeWashoff (SurfaceQualitySoA &sq, const double runoff, const double area, int n_subcatch)
	Batch compute washoff for all subcatchments.

void	applyCoPollutant (SurfaceQualitySoA &sq, const double runoff, const double area, const int co_pollut, const double co_frac, int n_subcatch)
	Apply co-pollutant washoff fractions.

Public Attributes
std::vector< BuildupParams >	buildup_params
	Per (landuse × pollutant) parameters. Index: [lu * n_pollutants + p].

std::vector< WashoffParams >	washoff_params

int	n_landuses_ = 0

int	n_pollutants_ = 0

Member Function Documentation

◆ applyCoPollutant()

void openswmm::landuse::LanduseSolver::applyCoPollutant	(	SurfaceQualitySoA &	sq,
		const double *	runoff,
		const double *	area,
		const int *	co_pollut,
		const double *	co_frac,
		int	n_subcatch
	)

Apply co-pollutant washoff fractions.

After primary washoff is computed, for each pollutant p with a co-pollutant k: washoff[p] += co_frac[p] * washoff[k]. Matches legacy landuse_getCoPollutLoad().

Parameters

sq	Surface quality SoA (washoff_conc modified in-place).
runoff	Runoff rate per subcatchment (for mass rate conversion).
area	Subcatchment area.
co_pollut	Co-pollutant index per pollutant (-1 = none).
co_frac	Co-pollutant fraction per pollutant.
n_subcatch	Number of subcatchments.

◆ computeBuildup()

void openswmm::landuse::LanduseSolver::computeBuildup	(	SurfaceQualitySoA &	sq,
		const double *	area,
		const double *	curb_length,
		double	dt,
		int	n_subcatch
	)

Batch compute buildup for all subcatchments.

For each (subcatch, pollutant):

Convert current buildup to equivalent days (inverse function)
Add timestep: days += dt / 86400
Recompute buildup mass (forward function) All three steps are vectorisable (pow/exp/division).

◆ computeWashoff()

void openswmm::landuse::LanduseSolver::computeWashoff	(	SurfaceQualitySoA &	sq,
		const double *	runoff,
		const double *	area,
		int	n_subcatch
	)

Batch compute washoff for all subcatchments.

For each (subcatch, pollutant): EMC: conc = coeff (constant — trivially vectorisable) Exponential: conc = k * Q^n * B / (Q * A) (vectorisable) Rating: conc = k * (Q*A)^(n-1) (vectorisable)

◆ init()

void openswmm::landuse::LanduseSolver::init	(	int	n_landuses,
		int	n_pollutants
	)

Member Data Documentation

◆ buildup_params

std::vector<BuildupParams> openswmm::landuse::LanduseSolver::buildup_params

Per (landuse × pollutant) parameters. Index: [lu * n_pollutants + p].

◆ n_landuses_

int openswmm::landuse::LanduseSolver::n_landuses_ = 0

◆ n_pollutants_

int openswmm::landuse::LanduseSolver::n_pollutants_ = 0

◆ washoff_params

std::vector<WashoffParams> openswmm::landuse::LanduseSolver::washoff_params

The documentation for this class was generated from the following files:

/home/runner/work/openswmm.engine/openswmm.engine/src/engine/quality/Landuse.hpp
/home/runner/work/openswmm.engine/openswmm.engine/src/engine/quality/Landuse.cpp

Public Member Functions

Public Attributes