摘要
本文从运动学方面以二元和轴对称情形为例分析螺旋流动的特点.又从动力学方面的分析指出:不可压缩无粘性液体的螺旋流动只能是恒定流,能量分布必是均匀的;不可压缩粘性液体的恒定螺旋层流,旋度分量必是调和函数,二阶旋度必有势函数,并有相应的能量方程;不可压缩粘性液体的恒定螺旋紊流,旋度与脉动量之间有必然的联系.
In this paper , the characteristic of the helical flow is analysed first from the aspect of kinematics , examples of two variables and axially symmetrical helical flow are givern. Then it is indicated though dynamical analysis that the helical flow of incompressible nonviscous liquid can only be steady , and the energy distribution must be homogenous. For the steady laminar helical flow of incompressible viscous liquid , the component of curl is a harmonic function , and the existence of a potential function for the curl of second order may be expected. For the steady turbulant helical flow , dynamical analysis also shows that there exists certain relationship between the curl and fluctuation .
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1991年第3期1-10,共10页
Journal of Hohai University(Natural Sciences)
关键词
螺旋流动
二阶旋度
势函数
helical flow
curl of second order
potential function
turbulent helical flow
