Results 11 to 20 of about 1,296,720 (203)

The Betz–Joukowsky limit: on the contribution to rotor aerodynamics by the British, German and Russian scientific schools

Wind Energy, 2011
ABSTRACTThe derivation of the efficiency of an ideal wind turbine has been attributed to the three famous scientists of the three aerodynamic research schools in Europe during the first decades of the previous century: Lanchester, Betz and Joukowsky. However, detailed reading of their classical papers has shown that Lanchester did not accept Froude's ...
Valery L. Okulov, Gijs A.M. van Kuik
openaire   +2 more sources

Theoretical calculation of wind (Or water) turbine considering kinetic and potential energy to exceed the Betz limit

The Betz limit sets a theoretical upper limit for the energy efficiency of turbines with a maximum power coefficient of 16/27. Betz's theory is precise and based on the calculation of kinetic energy. However, if the potential energy is taken into account the theoretical energy efficiency of a turbine can be higher.
Lecanu, Smorgrav, Mouaze, Breard
core   +6 more sources

Optimal performance of actuator disc models for horizontal-axis turbines

Frontiers in Energy Research, 2022
This study analyzes actuator disc (AD) models of horizontal-axis turbines to determine optimal performance, defined as the maximum power extracted at any tip speed ratio.
David H. Wood, Mohamed M. Hammam
doaj   +1 more source

Physical limits of wind energy within the atmosphere and its use as renewable energy: From the theoretical basis to practical implications

Meteorologische Zeitschrift, 2021
How much wind energy does the atmosphere generate, and how much of it can at best be used as renewable energy? This review aims to give physically-based answers to both questions, providing first-order estimates and sensitivities that are consistent with
Axel Kleidon
doaj   +1 more source

1004 Toward Transcendence of the Theoretical Betz Limit Using Wind-Lens Turbine

The Proceedings of the Fluids Engineering Conference, 2014
Kazutoyo Yamada, Nobuhito Oka
exaly   +3 more sources

Wind Turbine Performance in Very Large Wind Farms: Betz Analysis Revisited

Energies, 2020
The theoretical limit for wind turbine performance, the so-called Betz limit, arises from an inviscid, irrotational analysis of the streamtube around an actuator disk.
Jacob R. West, Sanjiva K. Lele
doaj   +1 more source

An Exploration of Wind Energy

Undergraduate Journal of Mathematical Modeling: One + Two, 2020
Wind energy is renewable energy extrapolated from the wind that has the potential to revolutionize our power supply in the near future as fossil fuels become outdated.
Bianca De Haan
doaj   +1 more source

The Betz limit and the corresponding thermodynamic limit

Wind Engineering, 2022
The Betz’s limit for the maximum efficiency of an ideal wind turbine imposes a maximum value of about 60% on the conversion of the kinetic energy of an airflow into work. In this paper, we analyze the reason for this value because, from a thermodynamic point of view, it can be 100%.
openaire   +1 more source

Optimal relationship between power and design-driving loads for wind turbine rotors using 1-D models [PDF]

Wind Energy Science, 2020
We investigate the optimal relationship between the aerodynamic power, thrust loading and size of a wind turbine rotor when its design is constrained by a static aerodynamic load.
K. Loenbaek, K. Loenbaek, C. Bak, J. I. Madsen, B. Dam   +4 more
doaj   +1 more source

Maximum Efficiency of a Wind Turbine

Undergraduate Journal of Mathematical Modeling: One + Two, 2016
The concept of a wind turbine is not new technology, however, in a day and age where renewable energy is popular, the interest in wind turbines has increased dramatically.
Marisa Blackwood
doaj   +1 more source