摘要
通过传热管内自转清洗钢丝螺旋的动力学理论研究,得到自转动力矩的理论计算式:动力矩大小与钢丝直径d、螺旋角的sin 2α、螺旋外径D^2、流速u^2、液体密度ρ成正比.理论计算式与单管流体动力学实验研究结果完全一致.因此,该计算式可以作为自转清洗钢丝螺旋结构优化设计和工程应用优化设计的理论基础.虽然包塑钢丝较粗,但是流体阻力实验研究结果表明仍然在一般工程的许可范围内.
A formula of the self-rotating kinetic moment is derived theoretically for the self-cleaning and rotating steel spiral with plastic coat.The moment is proportional to d（spiral wire diameter）,sin 2α（α：the helical angle）,D^2（D：the spiral O.D）,u^2（u：the flow velocity） andρ（fluid density）.The results of the formula agree with experimental results.Therefore,the formula can serve as the theoretical foundation in optimal design of the steel spiral with plastic coat.The spiral is thick with coat but the experiment results show that the flow resistance is still in the range of the general industrial limitation.
出处
《力学与实践》
CSCD
北大核心
2012年第2期54-57,共4页
Mechanics in Engineering
基金
湖南省教育厅青年项目资助(06B024)
关键词
螺旋线
自转清洗
动力矩
结构优化
流体阻力
spiral
self-cleaning and rotation
kinetic moment
structure optimization
flow resistance
