This study evaluates the performance of a counter-rotating dual rotor wind turbine (CR-DRWT) with 2 m2 rotor radius equipped with a double rotational armature in an open jet wind tunnel. With only one similar-sized design previously assessed in a wind tunnel, this study offers valuable validation material …

This article discusses results from an international contest, open for university student teams (bachelor and master), involving the design, construction, and testing of small wind turbines in a large wind tunnel. The wind tunnel has an outlet of 2.85 x 2.85 m allowing a maximum rotor swept area of 2 …

Dynamic inflow effects occur due to the rapid change of the rotor loading under conditions such as fast pitch steps. The paper presents a setup suitable for the investigation of those effects for non-axisymmetric rotor conditions, namely individual pitch steps. Furthermore, insights into the relevant …

The dynamic inflow effect describes the unsteady aerodynamic response to fast changes in rotor loading due to the inertia of the wake. Fast changes in turbine loading due to pitch actuation or rotor speed transients lead to load overshoots. The phenomenon is suspected to be also relevant for gust situations; …

Gastcollege bij de Hogeschool Rotterdam

Rotor morphing has been investigated in the past for improvement of rotor performance, either for reduction of rotor power demand or for vibratory load alleviation. The present study investigates the application of camber morphing for improvement of rotor performance in hover and vertical flight conditions, …

In this report, the details of an investigation into the e ect of the low induction wind turbines on the Levelised Cost of Electricity (LCoE) in a 1GW o shore wind farm is outlined. The 10 MW INNWIND.EU conventional wind turbine and its low induction variant, the 10 MW AVATAR wind turbine, are considered …

De aanleiding voor het uitvoeren van deze opdracht is de vraag naar een verticale balanceerbank voor gasturbine rotordisks. Deze balanceerbank wordt buiten dit project om ontwikkeld door Sulzer. De huidige verticale balanceerbank heeft een maximale capaciteit tot 2.000 kg. Sulzer wil een nieuwe verticale …

Gasturbines worden op grote schaal gebruikt voor het opwekken van elektriciteit en de voortstuwing van vliegtuigen en schepen. De zwaarst belaste onderdelen in deze motoren, de turbine rotor bladen, worden gemaakt van éénkristallijne nikkel superlegeringen. Het superieure hoge temperatuur gedrag van …