EML4450L21 - Sustainable Energy Science and Engineering...

Info icon This preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
S ustainable E nergy S cience and E ngineering C enter Wind Energy - Aerodynamics
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
S ustainable E nergy S cience and E ngineering C enter One dimensional momentum theory Assumptions: Incompressible, inviscid, steady state flow Infinite number of blades Uniform thrust over the rotor area Non rotating wake The thrust T (equal and opposite to the force of the wind on the wind turbine) is given by Source: Wind Energy Explained by J.F Manwell, J.G. McGowan and A.L. Rogers, John Wiley, 2002. Wind Turbine Aerodynamics T = T = U 1 ρ UA ( ) 1 U 4 ρ UA ( ) 4 Ý m = ρ UA ( ) 1 = ρ UA ( ) 4 T = Ý m U 1 U 4 ( ) = A 2 p 2 p 3 ( ) p 1 + 1 2 ρ U 1 2 = p 2 + 1 2 ρ U 2 2 p 3 + 1 2 ρ U 3 2 = p 4 + 1 2 ρ U 4 2
Image of page 2