Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
(OP)
HEllo all,
i am working on a project "hybrid solar wind power generation system" i am using vertical axis wind turbine. i have calculated the swift area and length of my turbine and select NACA 0012 air foils for the turbine blades. the problem i have is how to calculate the chord length of those blades, once i have the chord length i can calculate the thickness of blades, but how to get the chord length, is there any relation b/w swift area and chord length or such kind of relation so i can calculate the chord length.
i search all over the internet but could not find a solution to my problem, hopes some one might here help me.
peace...
i am working on a project "hybrid solar wind power generation system" i am using vertical axis wind turbine. i have calculated the swift area and length of my turbine and select NACA 0012 air foils for the turbine blades. the problem i have is how to calculate the chord length of those blades, once i have the chord length i can calculate the thickness of blades, but how to get the chord length, is there any relation b/w swift area and chord length or such kind of relation so i can calculate the chord length.
i search all over the internet but could not find a solution to my problem, hopes some one might here help me.
peace...





RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
another day in paradise, or is paradise one day closer ?
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
another day in paradise, or is paradise one day closer ?
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
draw a line from the leading edge (normal to the tangent) to the training edge.
why would it not be so ?
another day in paradise, or is paradise one day closer ?
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
are you sizing the aero-foil to meet a load (power generated in a specific wind?) ?
maybe its ... swept area/(length*number of blades)
have you looked up vertical axis wind turbines ?
another day in paradise, or is paradise one day closer ?
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
are u sure that formula is correct
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
Maybe this can help you.
B.E.
You are judged not by what you know, but by what you can do.
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
now i want to calculate the chord length of blades that can generate this power...what calculations i need to do to get the chord length
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
but what i want to do is to calculate the chord length for my swept area
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
power generated also depends on wind speed, and propeller rpm.
do you have a vertical turbine design book ?
another day in paradise, or is paradise one day closer ?
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
I suppose spanwise flow and so on might be unusually significant in the case of a vertical turbine but I'm hoping the accuracy you need doesn't require taking it into account.
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
the wind speed is 4.91 m/s
i m having deifficulty in calculating the chord length,
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
Why don't you pick an arbitrary length, run through your calculations , then re-iterate to get an answer you can use.
B.E.
You are judged not by what you know, but by what you can do.
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
Are you trying to make something like this?
B.E.
You are judged not by what you know, but by what you can do.
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
I recall that on a VAWT the chord length / Diameter sets the top end wind speeds for power output due to blanketing effects.
Calculating the performance of the turbine will require 360 degree AOA lift drag curves for NACA0012 which do exist (I have a copy somewhere taken from a American wind-turbine journal published in the 70's).
RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE
the wind speed is 4.91 m/s"
O RLY
While I can see someone designing for a particular windspeed as a learning exercise, I'd a thunk any commercial product would be more interested in some sort of robust optimisation vs a range of windspeeds.
Cheers
Greg Locock
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RE: Chord length of NACA 0012 AIRFOIL FOR VERTICAL RURBINE