Hi, I am simulating a horizontal axis wind turbine using Ansys Fluent. I want to validate the model by calculating the turbine power at different wind speed. Using Fluent, I calculate the torque and moment coefficient. But I don't know which equation must I use to calculate the power. Could you tell me which of these equation is the correct one
1- Power=Torque*angular velocity;
2- Power=Torque*angular velocity*Betz limit;
3- Power=Torque*angular velocity*Cp(=Ct*TSR);
4- Power=Cp*wind power;
5- Power=Cp*wind power* Betz limit ?
Thank you.
Dear Somaya Younoussi ,
I always use the HOMER to calculate the Renewables power output.
Here, I shared the calculation of wind turbine power output by HOMER.
Source: https://www.homerenergy.com/products/pro/docs/latest/how_homer_calculates_wind_turbine_power_output.html
Read about Betz formula
Here for example:
Étude théorique d'une éolienne - Wiki Éolienne (f4jr.org)
Hi
you have to use the first equation, P=torque*angular velocity.
Betz limit is a theoretical limit for power coefficient that shows the power generated by wind turbines can't cross this limit. so you don't need that in your calculations.
Jamel Chahed, Aung Ze Ya and Mohammad Zareian thank for you all. Mohammad Zareian when I use this formula I found high torque especially at high wind velocity and high angular rotation speed. What is the problem?
Somaya Younoussi
I don't know the exact conditions of your work and which validation data you are using, but in general check your simulation condition to be the same as your validation data and use appropriate dimensions to calculate power. (N.m) for torque and (rad/s) for angular velocity. and Power will be in watts.
- Badges
- Science topic
- Similar topics
- Correction