Dynamic Wind Speed in Dynamic Inflow Models

Master Thesis (2018)
Author(s)

W.E. van der Deijl (TU Delft - Aerospace Engineering)

Contributor(s)

Carlos Simao Simao Ferreira – Mentor

Tom Berdowski – Mentor

M. B. Zaaijer – Graduation committee member

A. H. Van Zuijlen – Graduation committee member

Gerard J. Schepers – Graduation committee member

Faculty
Aerospace Engineering
Copyright
© 2018 Wessel van der Deijl
More Info
expand_more
Publication Year
2018
Language
English
Copyright
© 2018 Wessel van der Deijl
Graduation Date
11-07-2018
Awarding Institution
Delft University of Technology
Programme
Aerospace Engineering
Faculty
Aerospace Engineering
Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

In the case of unsteady loading conditions at a rotor, the induced velocity response lags the thrust coefficient at the rotor. The two parameters that are responsible for unsteady loading conditions are rotor thrust (due to blade pitch, or rotational speed) and incoming wind speed. The induced velocity response to these two sources of unsteadiness have been compared in a free wake vortex ring model. It was found that a varying wind speed has a non-negligible dynamic inflow effect, and the effect is different from varying rotor thrust. Additionally, current engineering models are incapable of capturing this difference. Recently a new engineering model was proposed at the TU Delft by Wei Yu, and this model is extended such that it is able to distinguish between the response to dynamic wind and to dynamic thrust.

Files

Report_Final.pdf
(pdf | 10.7 Mb)
License info not available