农机化研究2018，Vol.40Issue(2)：236-240,246,6.
船式拖拉机凸包非光滑表面船壳减阻性能研究
Drag Reduction Effect of Convex Non-smooth Surface on the Boat-type Tractor
摘要
Abstract
In order to reduce the resistance when the boat-type tractor works in the paddy field, a kind of the convex non-smooth surface of the hull is designed.Using the finite element method for the convex non-smooth surface hull's numerical simulation research on the slurry medium, the hull resistance values are computed between the convex non-smooth surface hull and the smooth surface hull in speed 0.5-4m/s.The drag reduction's mechanism of the convex hull is analysed and then the effect characteristic of convex hull size on the drag reduction is studied.Results are showed that the convex nosmooth surface hull has the good drag reduction effect.The low viscous shear stress for its convex rooms' fluid about the hull is the important reasons for drag reduction characteristics and the drag reduction rate of 9.33% is better effect than others.It is significant to the boat-type tractor's design.关键词
船式拖拉机/凸包/非光滑表面/减阻Key words
boat-type tractor/convex/non-smooth surface/drag reduction分类
农业科技引用本文复制引用
周明刚,王高波,刘明勇,陈源..船式拖拉机凸包非光滑表面船壳减阻性能研究[J].农机化研究,2018,40(2):236-240,246,6.基金项目
国家自然科学基金项目(51405142) （51405142）
