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THE FEUTEX TOOLKIT

Wind Rotor Power Scenario

Estimate incident wind power and extracted power using a chosen power coefficient.

Energy workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaIncident kinetic power = 0.5*density*PI*diameter**2/4*speed**3; Estimated extracted power = 0.5*density*PI*diameter**2/4*speed**3*cp

Worked example

Inputs

Rotor diameter
4 m
Air density
1.225 kg/m³
Wind speed
8 m/s
Power coefficient
0.4

Expected results

Incident kinetic power
3940.813825 W
Estimated extracted power
1576.32553 W

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Estimate incident wind power and extracted power using a chosen power coefficient.
  2. Set rotor diameter, air density, wind speed, power coefficient in the indicated units.
  3. Calculate and compare incident kinetic power, estimated extracted power.

Try this example

{
  "diameter": 4,
  "density": 1.225,
  "speed": 8,
  "cp": 0.4
}

Accuracy and scope

Uniform wind and user-supplied power coefficient bounded by Betz limit. Does not include cut-in, rated output, turbulence or electrical losses.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.