Выходит 4 номеров в год
ISSN Печать: 1065-3090
ISSN Онлайн: 1940-4336
Indexed in
COMPARISON OF FAR WAKES BEHIND A SOLID DISK AND A THREE-BLADE ROTOR
Краткое описание
A comparison of the wakes developed behind an immobile bluff body (solid disk) and a three-blade rotor at different rotational speeds is studied to find a correlation between them. LDA and PIV were applied to study the wakes behind both models in a water flume (Re ≈ 2.3·105). Everywhere in both wakes, a constant value of the Strouhal number was found to be equal to 0.23 for a three-blade rotor and 0.15 for a solid disk. This Strouhal number is in good agreement with the constants that usually characterize the wake oscillations behind immobile bluff bodies. The comparison of axial velocity deficit and rms of the velocity in both far wakes for the disk or the rotor shows a rational decay with the same power −2/3. It has good agreement with the analytical formula for the decay of the velocity deficit behind bluff bodies. A limit for using this model restricted by the turbulence level of the initial free flow was found experimentally.
-
Chatelain Philippe, Duponcheel Matthieu, Caprace Denis-Gabriel, Marichal Yves, Winckelmans Grégoire, Vortex particle-mesh simulations of vertical axis wind turbine flows: from the airfoil performance to the very far wake, Wind Energy Science, 2, 1, 2017. Crossref
-
Kabardin I.K., Naumov I.V., Okulov V.L., An investigation of a self-similarity for local vorticity and velocity components in tip vortex cores of a rotor wake, Journal of Physics: Conference Series, 899, 2017. Crossref
-
Okulov V. L., The role of laboratory testing in the development of rotor aerodynamics (review), Thermophysics and Aeromechanics, 25, 1, 2018. Crossref
-
Sørensen J N, Mikkelsen R F, Kabardin I K, Litvinov I V, Naumov I V, Okulov V L, Development and interaction of rotor wakes, Journal of Physics: Conference Series, 1037, 2018. Crossref