Node hydraulics — volume/depth/head conversions, surface area, overflow. More...

#include "../data/NodeData.hpp"
#include "../data/TableData.hpp"

Include dependency graph for Node.hpp:

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Functions
double	openswmm::node::getVolume (const NodeData &nodes, int idx, double depth, TableData *tables=nullptr)
	Compute volume at a given depth for a single node.

double	openswmm::node::getSurfArea (const NodeData &nodes, int idx, double depth, TableData *tables=nullptr)
	Compute surface area at a given depth for a single node.

double	openswmm::node::getPondedArea (const NodeData &nodes, int idx, double depth)
	Get the ponded area (for overflow above rim).

double	openswmm::node::getMaxOutflow (const NodeData &nodes, int idx, double q, double dt)
	Compute max outflow limited by available volume.

double	openswmm::node::getOverflow (double new_volume, double full_volume, double dt)
	Compute overflow rate at a node.

double	openswmm::node::getHead (double invert_elev, double depth)
	Compute head from depth: head = invert + depth.

void	openswmm::node::computeHeads (const double invert, const double depth, double *head, int n)
	Compute head = invert + depth for all nodes.

void	openswmm::node::computeVolumes (const NodeData &nodes, const double depth, double volume)
	Compute volumes for all nodes from their current depths.

void	openswmm::node::computeOverflows (const double new_volume, const double full_volume, double *overflow, double dt, int n)
	Compute overflow for all nodes.

Variables
constexpr double	openswmm::constants::GRAVITY = 32.2
	ft/s^2

constexpr double	openswmm::constants::PHI = 1.486
	Manning's units factor (US)

constexpr double	openswmm::constants::FUDGE = 0.0001
	Minimum depth/area threshold (ft)

constexpr double	openswmm::constants::MIN_SURFAREA = 12.566
	4*pi sq ft ≈ 4-ft diameter manhole

Detailed Description

Node hydraulics — volume/depth/head conversions, surface area, overflow.

All functions operate on SoA arrays from NodeData. They are designed for batch operation over all nodes in a single call.

Namespaces