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OpenSWMM Engine
6.0.0-alpha.1
Data-oriented, plugin-extensible SWMM Engine (6.0.0-alpha.1)
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OpenSWMM Engine
6.0.0-alpha.1
Data-oriented, plugin-extensible SWMM Engine (6.0.0-alpha.1)
|
Global physical, numerical, and model constants for OpenSWMM Engine. More...
Go to the source code of this file.
Namespaces | |
| namespace | openswmm |
| namespace | openswmm::constants |
| namespace | openswmm::constants::ode |
Variables | |
| constexpr double | openswmm::constants::GRAVITY = 32.2 |
| constexpr double | openswmm::constants::SQRT_GRAVITY = 5.67450438786 |
| sqrt(GRAVITY) — precomputed to avoid per-element std::sqrt in Froude calc. | |
| constexpr double | openswmm::constants::INV_SQRT_GRAVITY = 0.17622692584 |
| 1.0 / sqrt(GRAVITY) — multiply instead of divide in Froude computation. | |
| constexpr double | openswmm::constants::PI = 3.141592654 |
| Pi. | |
| constexpr double | openswmm::constants::PHI = 1.486 |
| constexpr double | openswmm::constants::MEXP = 5.0 / 3.0 |
| constexpr double | openswmm::constants::VISCOS = 1.1e-5 |
| Kinematic viscosity of water at 20°C (ft²/sec). | |
| constexpr double | openswmm::constants::SEC_PER_DAY = 86400.0 |
| Seconds per day. | |
| constexpr double | openswmm::constants::FT_PER_IN = 1.0 / 12.0 |
| Feet per inch. | |
| constexpr double | openswmm::constants::IN_PER_FT = 12.0 |
| Inches per foot. | |
| constexpr double | openswmm::constants::FUDGE = 0.0001 |
| constexpr double | openswmm::constants::MIN_SURFAREA = 12.566 |
| constexpr double | openswmm::constants::MIN_DELTA_Z = 0.001 |
| Minimum elevation drop for conduit slope computation (ft). | |
| constexpr double | openswmm::constants::XTOL = 0.001 |
| constexpr double | openswmm::constants::TINY = 1.0e-6 |
| Small positive number for underflow protection. | |
| constexpr double | openswmm::constants::OMEGA = 0.5 |
| constexpr double | openswmm::constants::DEFAULT_HEAD_TOL = 0.005 |
| constexpr int | openswmm::constants::DEFAULT_MAX_TRIALS = 8 |
| constexpr double | openswmm::constants::MAX_VELOCITY = 50.0 |
| constexpr double | openswmm::constants::MIN_TIMESTEP = 0.001 |
| constexpr double | openswmm::constants::EXTRAN_CROWN_CUTOFF = 0.96 |
| constexpr double | openswmm::constants::SLOT_CROWN_CUTOFF = 0.985257 |
| Preissmann slot crown cutoff fraction. | |
| constexpr double | openswmm::constants::SLOT_WIDTH_FACTOR = 0.001 |
| Preissmann slot width factor (slot_width = y_full * this factor). | |
| constexpr int | openswmm::constants::ode::MAX_STEPS = 10000 |
| Maximum number of integration steps. | |
| constexpr double | openswmm::constants::ode::ODE_TINY = 1.0e-30 |
| Underflow protection for scaling. | |
| constexpr double | openswmm::constants::ode::SAFETY = 0.9 |
| Safety factor for step size adjustment. | |
| constexpr double | openswmm::constants::ode::PGROW = -0.2 |
| Exponent for step increase. | |
| constexpr double | openswmm::constants::ode::PSHRNK = -0.25 |
| Exponent for step decrease. | |
| constexpr double | openswmm::constants::ode::ERRCON = 1.89e-4 |
| Error control threshold = (5/SAFETY)^(1/PGROW). | |
| constexpr double | openswmm::constants::ode::GWTOL = 0.0001 |
| constexpr double | openswmm::constants::ode::ODETOL = 0.0001 |
| Runoff ODE tolerance. | |
| constexpr double | openswmm::constants::MIN_LINK_FLOW = 0.001 |
| Minimum orifice/weir flow threshold. | |
| constexpr double | openswmm::constants::RECT_ALFMAX = 0.97 |
| Maximum alpha fraction for rectangular shapes. | |
| constexpr double | openswmm::constants::TRAP_ALFMAX = 0.98 |
| Maximum alpha fraction for trapezoidal shapes. | |
| constexpr int | openswmm::constants::N_TRANSECT_TBL = 51 |
| Transect discretization table size. | |
| constexpr int | openswmm::constants::MAX_SHAPES = 26 |
| Maximum number of cross-section shape types. | |
| constexpr int | openswmm::constants::N_FLOW_CLASSES = 7 |
| Number of flow classification bins. | |
| constexpr int | openswmm::constants::MAX_PAST_RAIN = 48 |
| Maximum past rain hours tracked per gage. | |
| constexpr int | openswmm::constants::N_TIME_BINS = 5 |
| Number of time step histogram bins. | |
| constexpr int | openswmm::constants::DATE_DELTA = 693594 |
Global physical, numerical, and model constants for OpenSWMM Engine.
Consolidates all constants previously scattered across the engine into a single header. Organized by category:
1.9.8