// multi-utility computation suite · offline · instant · precise
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sci.tidal-stream-power Calculator
Calculates tidal stream turbine power output: P = ½ρCpπR²v³, from rotor radius, efficiency Cp (Betz limit 59.3%), and current velocity. Tidal stream power scales as v³ — doubling tidal velocity increases power 8× — sites with consistent fast tidal currents are globally scarce but highly predictable.
Inputs
Rho Kg M3
Mass per unit volume (kg/m³). Water: 1,000. Air: 1.225. Steel: 7,850. Affects buoyancy, flow, and structural loads.
A M2
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
V M S
Speed in a specified direction (m/s). Required for momentum, kinetic energy, and wave calculations.
Cp
Rate of energy transfer (W). P = V×I (electrical). P = F×v (mechanical). 1 horsepower ≈ 746 W.
Results
extracted power P (kW)
Reference formula or conversion factor shown for context.
available kinetic power (kW)
Sample size or count used in the calculation.
Cp relative to Betz limit
The value at the specified point or condition.
P = ½ρAv³·Cp
Reference formula or conversion factor shown for context.
Betz limit Cp_max
Reference formula or conversion factor shown for context.