摘要
以控制流体流动的动量方程、能量方程和描述流体流动特性的本构方程作为基本方程组,对定壁面温度和定环境温度两种热边界条件下的含蜡原油圆管流动的速度分布与温度分布进行了解析求解.分析与计算表明:所得解析解普遍适用于含蜡原油的各种流变行为.当屈服应力τ0不等于零时,在管中心存在着柱塞流,柱塞半径r0与τ0成正比;在柱塞内,速度与温度沿径向呈均匀分布;在柱塞外,速度与温度沿径向呈曲线分布.通过实例计算,分析了流变参数对速度与温度分布的影响,为含蜡原油管输中压力损失和热力损失的准确计算奠定了基础.
The analytic solutions of the velocity and the temperature distributions of the circular pipe flow of waxy crude oil under constant pipe-wall temperature and constant environment temperature separately are obtained based on the momentum equation and energy equation which control the flow of fluid and the constitutive equation which describes the flow properties of fluid.The analysis shows that the analytic solutions given are generally suitable to various rheological behavoirs of waxy crude oil.When yield stress is not equal to zero,there is cylindrical flow in the center of the pipe,the radius of the cylindrical flow is in direct proportion to yield stress;the distributions of velocity and temperature in radius direction are all uniform within the cylindrical flow,and the distributions of velocity and temperature in radius direction are curvilinear without the cylindrical flow.The effect of rheological parameters on the distributions of velocity and temperature are analyzed through the calculation of a case.The results given in this paper lay a foundation for the accurate calculations of the pressure loss and the heat power loss in the transportation of waxy crude oil through circular pipeline.
出处
《西安石油大学学报（自然科学版）》
CAS
2005年第6期37-40,52,共5页
Journal of Xi’an Shiyou University（Natural Science Edition）
关键词
含蜡原油
圆管流动
速度分布
温度分布
解析解
waxy crude oil
flow in circular pipe
velocity distribution
temperature distribution
analytic solution
