Open AccessDouble multiple stream tube theory coupled with dynamic stall and wake correction for aerodynamic investigation of vertical axis wind turbine
Author(s) -
Ngoc Anh Vu,
Ngoc Son Pham
Publication year - 2020
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v23i4.2396
Subject(s) - airfoil , stall (fluid mechanics) , wake , aerodynamics , turbine , lift coefficient , mechanics , leading edge , vertical axis wind turbine , control theory (sociology) , physics , marine engineering , aerospace engineering , computer science , turbulence , engineering , reynolds number , control (management) , artificial intelligence
This study describes an effectively analytic methodology to investigate the aerodynamic performance of H vertical axis wind turbine (H-VAWT). An in-house code based on double multiple stream tube theory (DMST) coupled with dynamic stall and wake correction is implemented to estimate the power coefficient. Design optimization of airfoil shape is conducted to study the influences of the dynamic stall and turbulent wakes. Airfoil shape is universally investigated by using the Class/Shape function transformation method. The airfoil study shows that the upper curve tends to be less convex than the lower curve in order to extract more energy of the wind upstream and generate less drag of the blade downstream. The optimal results show that the power coefficient increases by 6.5% with the new airfoil shape.