1. Wall correction model for wind tunnels with open test section
- Author
-
Sorensen, Jens Norkaer, Shen, Wen Zhong, and Mikkelsen, Robert
- Subjects
Wind tunnel models -- Analysis ,Aerospace and defense industries ,Business - Abstract
In the paper we present a correction model for wail interference on rotors of wind turbines or propellers in wind tunnels. The model, which is based on a one-dimensional momentum approach, is validated against results from Navier--Stokes computations using a generalized actuator disc principle. In the model the exchange of axial momentum between the tunnel and the ambient room is represented by a simple formula, derived from actuator disc computations. The correction model is validated against Navier-Stokes computations of the flow about a wind turbine rotor. Generally, the corrections from the model are in very good agreement with the computations, demonstrating that one-dimensional momentum theory is a reliable way of predicting corrections for wall interference in wind tunnels with closed as well as open cross sections.
- Published
- 2006