Mathematical modeling of flows in wind turbines with a vertical axis

• Published in: Fluid dynamics Vol. 49; no. 2; pp. 249 - 258
• Main Authors: P’yankov, K. S., Toporkov, M. N.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-03-2014
• Subjects: Classical and Continuum Physics; Classical Mechanics; Computational fluid dynamics; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Mathematical analysis; Mathematical models; Navier-Stokes equations; Physics; Physics and Astronomy; Rest; Rotors; Two dimensional; Wind turbines; self-starting; Darrieus rotor; wind power plants; numerical modeling; calculation of the parameters of wind turbines with a vertical axis; Savonius rotor
• ISSN: 0015-4628; 1573-8507
• DOI: 10.1134/S0015462814020136

Flow in the rotors of wind turbines with a vertical axis of the Darrieus-Savonius type and their combinations is considered within the framework of the Navier-Stokes equations, in the two-dimensional formulation. A parametric investigation of the Darrieus rotor characteristics is carried out. For all configurations the dependence of the moment and power coefficients on the specific speed of the rotor is calculated. The possibility of the Darrieus rotor self- starting from the state of rest is investigated. The effect of nonmonotonicmoment variation for the Darrieus-type rotor is studied for the specific speeds of 0.5 to 1. A combined design of the Darrieus-Savonius rotor is considered to solve the problems due to a small moment of the Darrieus rotor during the start.