propeller_strike: Propeller blade strike probability

In EnvironmentalScienceAssociates/tbsa: Turbine Blade Strike Analysis

Propeller blade strike probability

Description

Calculates leading-edge blade strike probability from a propeller turbine

Usage

propeller_strike(
  Q,
  H,
  D,
  rpm,
  eta,
  opt,
  N,
  L,
  lambda = 0.2,
  radius_ratio = 0.75
)

Arguments

Q	Turbine discharge (cfs)
H	Net head on the turbine (ft)
D	Nominal diameter (ft) of runner
rpm	Runner revolutions per minute
eta	Turbine efficiency
opt	Ratio of turbine discharge at best efficiency to hydraulic capacity
N	Number of blades
L	Fish length (ft)
lambda	Actual mortality correlation; influenced by many factors including unit type and fish species
radius_ratio	r/R where R = 0.5 * D; passage near hub (0.5), mid-blade (0.75), blade tip (1)

EnvironmentalScienceAssociates/tbsa documentation built on Feb. 3, 2023, 6:46 a.m.