内螺纹管中汽-液两相流体摩擦压降特性研究  

Investigation on Frictional Pressure Drop of Steam-Water Two-Phase Flow in an Internally Ribbed Tube

作　　者：李永星[1] 尹飞[2] 陈听宽[1] 李会雄[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,710049 [2]发电设备国家工程研究中心,哈尔滨150040

出　　处：《核动力工程》2005年第3期228-232,共5页Nuclear Power Engineering

基　　金：国家自然科学基金资助项目(50323001)

摘　　要：在压力为9～22MPa,质量流速为600～1200kg/(m2·s),含汽率为0～1的工况范围内,对Φ38.1mm×7.5mm的6头内螺纹管中汽-液两相流体的摩擦压降特性进行了试验研究。试验段采用水平绝热布置。试验结果表明:压力对两相流摩擦压降的影响很大,随压力增加,两相流摩擦压降倍率减小,在临界压力附近,两相流摩擦压降倍率趋近于1;随含汽率增加,两相流摩擦压降倍率先增加,然后有减小的趋势;随质量流速增加,两相流摩擦压降倍率减小。用于计算单相水摩擦压降系数以及用于计算汽-液两相流体摩擦压降的试验关联式被提供。Within the range of pressures from 9 to 22 MPa, mass velocities from G 600 to 1200 kg/(m2&middots), and heat fluxes from x 0 to 1.0, experiments had performed to investigate the frictional pressure drop of the steam-water two-phase flow in a six-head internally ribbed tube with the outer diameter of 38.1 mm and the thickness of 7.5 mm. The test section was thermally insulated as horizontal direction. Based on the experimental results, it was found that pressure had a noticeable effect on the frictional pressure drop of the mental results, it was found that pressure had a noticeable effect on the frictional pressure drop of the steam-water two-phase flow, and the frictional pressure drop factor of the steam-water two-phase flow decreased with an increase in pressure. The frictional pressure drop factor of the steam-water two-phase flow tends to one near the critical pressure. As steam quality increased, the frictional pressure drop factor of the steam-water two-phase flow first increased, and then it had a decreasing tendency. With an increase in mass velocity, the frictional pressure drop factor of the steam-water two-phase flow decreased. Correlations of the frictional pressure drop factor of the steam-water two-phase flow had been provided.

关 键 词：汽-液两相流 内螺纹管 摩擦压降 

分 类 号：TK124[动力工程及工程热物理—工程热物理]