%0 Journal Article
%T Study on a Comprehensive Energy-Saving Sail by CFD Method
%A Yanna Zheng
%A Dexing Liu
%A Hongwei An
%A Wenjia Sun
%A Tiaojian Xu
%J Open Journal of Fluid Dynamics
%P 145-155
%@ 2165-3860
%D 2016
%I Scientific Research Publishing
%R 10.4236/ojfd.2016.63012
%X A comprehensive energy-saving sail (CES) has been proposed in order to promote energy saving and emission reduction from shipping. Wind energy is harvested for propulsion and electrical generator at the same time by a unique structure of CES. A CFD (Computational Fluid Dynamics) code is verified by a case of arc wind sail, and it is used to simulate the pressure and velocity around the CES. The results show that the outlet velocity of air tunnel <i>V<sub>o</sub></i> and wind velocity <i>V<sub>i</sub></i> serve as an equation <i>V<sub>o</sub></i> ¡Ö 1.31<i>V<sub>i</sub></i>, which means the CES can effectively improve the conversion efficiency. In addition, it is found that <i>V<sub>o</sub></i> increases with the tunnel diameter to some extend over which it will keep almost constant.
%K Energy-Saving Sail
%K Wind Power Generation
%K Wind-Assisted Propulsion
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=70389