WIT Press

COMPUTATIONAL STUDY OF DIFFUSER AUGMENTED WIND TURBINE USING ACTUATOR DISC FORCE METHOD

Price

Free (open access)

Paper DOI

10.2495/CMEM-V4-N4-522-531

Volume

Volume 4 (2016), Issue 4

Pages

9

Page Range

522 - 531

Author(s)

V.V. DIGHE, F. AVALLONE & G.J.W. VAN BUSSEL

Abstract

In this paper, a computational approach, based on the solution of Reynolds-averaged-Navier–Stokes (RANS) equations, to describe the flow within and around a diffuser augmented wind turbine (DAWT) is reported. In order to reduce the computational cost, the turbine is modeled as an actuator disc (AD) that imposes a resistance to the passage of the flow. The effect of the AD is modeled applying two body forces, upstream and downstream of the AD, such that they impose a desired pressure jump. Comparison with experiments carried out in similar conditions shows a good agreement suggesting that the adopted methodology is able to carefully reproduce real flow features.

Keywords

actuator disc simulation, CFD, diffuser augmented wind turbine