Theoretical Analysis of Rolling Fluid Turbines

0554746 - ÚT 2023 RIV US eng J - Článek v odborném periodiku
Kincl, O. - Pavelka, M. - Maršík, František - Sedláček, M.
Theoretical Analysis of Rolling Fluid Turbines.
Siam Journal on Applied Mathematics. Roč. 82, č. 1 (2022), s. 313-329. ISSN 0036-1399. E-ISSN 1095-712X
Grant CEP: GA ČR(CZ) GC21-26232J
Institucionální podpora: RVO:61388998
Klíčová slova: bladeless turbine * fluid mechanics * analytical solution
Obor OECD: Thermodynamics
Impakt faktor: 1.9, rok: 2022
Způsob publikování: Omezený přístup
https://epubs.siam.org/doi/10.1137/21M1392796

The rolling fluid turbine is a bladeless hydraulic device that exhibits peculiar behavior, making it interesting from the aspect of fluid dynamics. The rotor of this turbine has an unusually symmetrical shape and can rotate in two directions---the one it chooses seems to be random. Explanation of the underlying hydraulic mechanism is an open problem, which we tackle here. This paper suggests that the hydraulic force on the rotor acts as positive feedback on the motion of the rotor itself. Such an effect can exist since the system is thermodynamically open. Power generation is described in an analytical computation based mostly on the arguments of symmetry. The result is then tested in a numerical simulation.
Trvalý link: http://hdl.handle.net/11104/0331229