Next Article in Journal / Special Issue
Adjoint-Based Design Optimisation of an Internal Cooling Channel U-Bend for Minimised Pressure Losses
Previous Article in Journal / Special Issue
Linear Stability Prediction of Vortex Structures on High Pressure Turbine Blades
Open AccessArticle

Effects of the Approximations Embodied in the Momentum Theory as Applied to the NREL PHASE VI Wind Turbine

Dipartimento di Ingegneria Industriale, Università degli Studi di Napoli Federico II, via Claudio 21, 80125 Napoli, Italy
*
Author to whom correspondence should be addressed.
This paper is an extended version of our paper in Proceedings of the European Turbomachinery Conference ETC12, 2017, Paper No. 295.
Academic Editor: Tony Arts
Int. J. Turbomach. Propuls. Power 2017, 2(2), 9; https://doi.org/10.3390/ijtpp2020009
Received: 12 May 2017 / Revised: 6 June 2017 / Accepted: 6 June 2017 / Published: 15 June 2017
This paper investigates the impact of the standard approximations embodied in the well-known Momentum Theory on its performance prediction capabilities. To this aim, the results of the momentum theory, which is still widely used in all Blade Element/Momentum codes for the analysis and/or design of wind turbines, are compared with those obtained with an actuator disk model based on Computational Fluid Dynamics techniques. In this method, the axisymmetric and steady Euler equations are solved with a classical finite volume approach, while the turbine effects are modelled through a set of axial and tangential body forces distributed over a disk shaped region representing the rotor swept surface. Since this method does not rely on the momentum theory simplifying assumptions, it can be suitably employed to verify the momentum theory validity. The analysis is carried out using the well documented experimental data of the National Renewable Energy Laboratory Phase VI wind turbine. View Full-Text
Keywords: momentum theory; blade-element/momentum theory; wind turbine momentum theory; blade-element/momentum theory; wind turbine
Show Figures

Figure 1

MDPI and ACS Style

Bontempo, R.; Manna, M. Effects of the Approximations Embodied in the Momentum Theory as Applied to the NREL PHASE VI Wind Turbine. Int. J. Turbomach. Propuls. Power 2017, 2, 9.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop