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Theoretical Analysis of Rolling Fluid Turbines
- 1.0554746 - ÚT 2023 RIV US eng J - Journal Article
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
R&D Projects: GA ČR(CZ) GC21-26232J
Institutional support: RVO:61388998
Keywords : bladeless turbine * fluid mechanics * analytical solution
OECD category: Thermodynamics
Impact factor: 1.9, year: 2022
Method of publishing: Limited access
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.
Permanent Link: http://hdl.handle.net/11104/0331229
Number of the records: 1