How would you find out the angular velocity of a wind turbine only knowing the RPM and wind speed?
>>8059040
waaaaaait a second, is this homework?
>>8059046
Theres a wind turbine right over there see? I took a picture of it.
wind speed right now is 13 mph
so 5.811 m/s
and it's spinning at about 65 RPM
so angular velocity must be...
Reminder: Homework should be posted over at >>>/hm/
Knowing the RPM, you know everything.
RPM/60=Rotations per second=frequency
Angular velocity = 2*pi*frequency
I was just curious about how much power it'd be outputting.
And I figured the angular velocity part out but now I don't know the torque... and there's no way to find out the force
So it doesn't matter I guess
>>8059040
Seems like wind speed is extraneous. If you know the RPM, you know the angular velocity.
>>8059099
Knowing the windspeed would give an upper bound on power and torque, knowing the angular velocity.
>>8059046
>>8059083
>simple questions must be homework
As someone from /diy/ this pisses me off so much, and to cap it off most of you couldn't answer the question anyway, Wind turbines are a popular project for many and a lot of people are interested in the mechanics behind it. I assume OP is one of them
>>8059707
I will present something interesting related to wind turbines soon.
>>8059099
Cp is power coefficient, about 0.39
>>8059754
To prevent further questions, rho, is probably density in this formula, so for an ideal gas it's (pressure*z) / ( gas constant*temperature)
For an ideal gas z = 1 and that's molar density so you might need to convert the density to a mass density by multiplying by the molar mass of air.
Can't be sure without reading a book since a unit analysis can not be performed without knowing the units of the coefficient
>>8059040
Me brainlet. Need radius.
>>8059754
>cp
MODS!!
>>8059040
USE NUCLEAR YOU TARD
>>8062025
/thread
but will bump with sweet as turbine shots
>>8062032
