Treatment expression evaluator for water quality. More...

#include <string>
#include <vector>

Include dependency graph for Treatment.hpp:

This graph shows which files directly or indirectly include this file:

Classes
struct	openswmm::treatment::Token

struct	openswmm::treatment::TreatExpr

Namespaces
namespace	openswmm

namespace	openswmm::treatment

Enumerations
enum class	openswmm::treatment::TokenType : int { openswmm::treatment::NUMBER = 0 , openswmm::treatment::VARIABLE = 1 , openswmm::treatment::ADD = 2 , openswmm::treatment::SUB = 3 , openswmm::treatment::MUL = 4 , openswmm::treatment::DIV = 5 , openswmm::treatment::POW = 6 , openswmm::treatment::NEG = 7 , openswmm::treatment::FUNC_EXP = 8 , openswmm::treatment::FUNC_LOG = 9 , openswmm::treatment::FUNC_SQRT = 10 , openswmm::treatment::FUNC_MIN = 11 , openswmm::treatment::FUNC_MAX = 12 , openswmm::treatment::FUNC_ABS = 13 , openswmm::treatment::FUNC_SGN = 14 , openswmm::treatment::FUNC_STEP = 15 , openswmm::treatment::LPAREN = 16 , openswmm::treatment::RPAREN = 17 , openswmm::treatment::COMMA = 18 }

enum class	openswmm::treatment::TreatVar : int { openswmm::treatment::C = 0 , openswmm::treatment::R = 1 , openswmm::treatment::DT = 2 , openswmm::treatment::HRT = 3 , openswmm::treatment::Q = 4 , openswmm::treatment::V = 5 , openswmm::treatment::D = 6 }

Functions
int	openswmm::treatment::parse (const std::string &expr_str, TreatExpr &result)
	Parse a treatment expression string into postfix tokens.

double	openswmm::treatment::evaluate (const TreatExpr &expr, double c, double dt, double hrt, double q, double v, double d)
	Evaluate a treatment expression with given variable values.

double	openswmm::treatment::applyTreatment (const TreatExpr &expr, double c_in, double dt, double hrt, double q, double v, double d)
	Apply treatment at a node for one pollutant.

Detailed Description

Treatment expression evaluator for water quality.

Evaluates user-defined treatment expressions at nodes to modify pollutant concentrations. Expressions can reference:

C (current concentration)
R (removal fraction)
DT (timestep in seconds)
HRT (hydraulic residence time in hours)
Q (flow rate)
V (volume)
D (depth)

Treatment expression strings have the form: "R = <expression>" — removal equation "C = <expression>" — concentration equation

Expressions are parsed at input time into a postfix token list using the Shunting-yard algorithm. Evaluation is a simple stack machine — vectorisable across nodes when all nodes use the same expression (batch eval with different variable values).

Note: Legacy reference: src/legacy/engine/treatmnt.c, mathexpr.c

Author: Caleb Buahin caleb.nosp@m..bua.nosp@m.hin@g.nosp@m.mail.nosp@m..com

License\n MIT License

Classes

Namespaces

Enumerations

Functions

Detailed Description