Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (11): 155-160.

• Traffic & Transportation Engineering • Previous Articles    

Analyses of Factors Affecting Suction Synergism of Hydrofoil

Wang Chao1,2  Cheng Xiang-ru1  Chang Xin1  Huang Sheng1   

  1. 1. College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,Heilongjiang,China; 2. College of Naval Architecture and Marine Power,Naval University of Engineering,Wuhan 430033,Hubei,China
  • Received:2011-10-25 Revised:2012-08-08 Online:2012-11-25 Published:2012-10-01
  • Contact: 常欣(1978-) ，男，副教授，主要从事船舶推进技术研究． E-mail: chengxiangru2010@126．com E-mail:wangchao0104@ hrbeu.edu.cn
  • About author:王超(1982-) ，男，博士后，讲师，主要从事船舶推进与节能技术研究．
  • Supported by:

    国家自然科学基金资助项目( 41176074) ; 中国高校博士点基金资助项目( 20102304120026) ; 哈尔滨工程大学中央高校基本科研业务费专项资金资助项目( HEUCFT1001)

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Abstract:

In order to reveal the hydrodynamic performance of the hydrofoil with suction synergism,a parametric study is conducted with the software of Fluent,in which a symmetrical NACA0012 airfoil is selected and the kω-SST turbulence model is utilized. The results show that the setting of suction inlets improves the hydrodynamic performance of the hydrofoil,and that,with the increase in suction inlet number,the lift coefficient decreases,while the drag coefficient first decreases and then increases,which means that there exists an optimal lift-to-drag ratio. Moreover,it is found that the lift coefficient decreases and the hydrodynamic performance degrades with the increase of the distance between two suction inlets,that the lift coefficient increases and the drag coefficient decreases with the retropulsion of suction inlets,thus improving the hydrodynamic performance,and that the lift coefficient,the drag coefficient and the lift-to-drag ratio all fluctuate with the widening of suction inlets.

Key words: hydrofoil, front suction, numerical simulation, stalling angle, lift-to-drag ratio

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