螺旋管内汽水两相流摩擦阻力特性实验研究  

EXPERIMENTAL INVESTIGATION OF FRICTIONAL RESISTANCE FOR STEAM-WATER TWO-PHASE FLOW IN HELICAL COILS

作　　者：毛宇飞[1] 郭烈锦[1] 甄飞强[1] 郭萌[1] 张文斌[1] 白博峰[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《工程热物理学报》2010年第3期443-446,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金重点项目(No.50536020);创新群体项目(No.50821604)

摘　　要：在宽广的实验参数范围内(压力p=8～21 MPa,质量流速G=1200～4000 kg·m^(-2)·s^(-1),壁面热流密度q=0～1000 kW·m^(-2))对立式螺旋管内汽水两相流摩擦阻力特性进行了实验研究。实验段由内径为10 mm的不锈钢管弯制而成,其螺旋直径为301mm,节距为49 mm。通过研究,获得了压力、干度、质量流速及热流密度等参数对汽水两相摩擦阻力的影响规律;并在实验数据的基础上,采用Chisholm的B系数法,给出了一个适用于螺旋管高压高质量流速工况汽水两相摩擦阻力的计算关系式。The frictional pressure drop characteristics of steam-water two-phase flow were experimentally studied in a vertical-upward helical coiled tube, which was constructed of a 10 mm ID stainless steel tube with 301 mm coil diameter and 49-mm pitch. Experiments were performed in a wide range of system pressure 8-21 MPa, mass velocity 1200-4000 kg·m^-2·s^-1 and wall heat flux 0-1000 kW·m^-2. Effects of various control variables （pressure, steam quality, mass velocity and heat flux） on the frictional resistance were systematically investigated. Based on the experimental data, a new correlation for the calculation of the frictional pressure drop of steam-water two-phase flow at high pressures and high mass velocities in helical coils was obtained using the Chisholm＇s B-coefficient method.

关 键 词：螺旋管 汽水两相流 摩擦阻力 

分 类 号：O359.1[理学—流体力学]