Open AccessDouble Multiple Streamtube Model and Numerical Analysis of Vertical Axis Wind Turbine
Author(s) -
Habtamu Beri,
Yongtao Yao
Publication year - 2011
Publication title -
energy and power engineering
Language(s) - English
Resource type - Journals
eISSN - 1949-243X
pISSN - 1947-3818
DOI - 10.4236/epe.2011.33033
Subject(s) - airfoil , vertical axis wind turbine , chord (peer to peer) , trailing edge , turbine , fluent , mechanics , computational fluid dynamics , leading edge , turbine blade , marine engineering , engineering , simulation , aerospace engineering , physics , computer science , distributed computing
The present paper contributes to the modeling of unsteady flow analysis of vertical axis wind turbine (VAWT). Double multiple streamtube (DSMT) model was applied for the performance prediction of straight bladed fixed pitch VAWT using NACA0018 airfoil at low wind speed. A moving mesh technique was used to investigate two-dimensional unsteady flow around the same VAWT model with NACA0018 airfoil modified to be flexible at 150 from the main blade axis of the turbine at the trailing edge located about 70 % of the blade chord length using fluent solving Reynolds average Navier-strokes equation. The results obtained from DMST model and the simulation results were then compared. The result shows that the CFD simulation with airfoil modified has shown better performance at low tip speed ratios for the modeled turbine