Rotor aerodynamic power limits at low tip speed ratio using CFD

• Published in: Journal of physics. Conference series Vol. 524; no. 1; p. 12099
• Main Authors: Mikkelsen, Robert F, Sarmast, Sasan, Henningson, Dan, Sørensen, Jens N
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.01.2014
• Subjects: Actuators; Aerodynamics; Criteria; Euler-Lagrange equation; Fluid flow; Momentum theory; Physics; Ratios; Rotors; Swirling; Tip speed; Vortex breakdown; Vortex rings; Vortices

When investigating limits of rotor aerodynamic models, the Betz limit serves as a solid marker of an upper limit which no model should be able to exceed. A century ago Joukowsky (1912) proposed a rotor aerodynamic model utilizing a rotating actuator disc with a constant circulation. This model has s...