openswmm::roadway Namespace Reference

Enumerations
enum class	SurfaceType : int {   PAVED = 0 ,   GRAVEL = 1 }

Functions
double	getDischargeCoeff (double hw_ratio, SurfaceType surface)
	Get discharge coefficient Cr from head/width ratio.
double	getSubmergenceFactor (double ht_ratio, SurfaceType surface)
	Get submergence correction factor Kt.
double	getFlow (double head_up, double head_down, double road_width, double road_length, SurfaceType surface, double &dqdh)
	Compute roadway weir overflow.

Enumeration Type Documentation

SurfaceType

enum class openswmm::roadway::SurfaceType : int

strong

Enumerator
PAVED
GRAVEL

Function Documentation

getDischargeCoeff()

double openswmm::roadway::getDischargeCoeff	(	double	hw_ratio,
		SurfaceType	surface
	)

Get discharge coefficient Cr from head/width ratio.

Parameters

hw_ratio	head / road_width.
surface	Paved or gravel.

Returns

Discharge coefficient.

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getFlow()

double openswmm::roadway::getFlow	(	double	head_up,
		double	head_down,
		double	road_width,
		double	road_length,
		SurfaceType	surface,
		double &	dqdh
	)

Compute roadway weir overflow.

Parameters

	head_up	Upstream head above road crest (ft).
	head_down	Downstream head above road crest (ft).
	road_width	Road width (ft).
	road_length	Crest length perpendicular to flow (ft).
	surface	Road surface type.
[out]	dqdh	Derivative dQ/dH.

Returns

Overflow rate (cfs).

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getSubmergenceFactor()

double openswmm::roadway::getSubmergenceFactor	(	double	ht_ratio,
		SurfaceType	surface
	)

Get submergence correction factor Kt.

Parameters

ht_ratio	head_down / head_up.
surface	Paved or gravel.

Returns

Submergence factor (0-1).

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