摘要
常压下,以空气和水为工质,对宽高比不同的两个矩形通道内两相流动摩擦阻力特性进行了研究,并对常规通道和微小通道内两相压降的计算模型进行了验证和评价。结果表明:传统的常规通道经验关系式并不适用于窄矩形通道中的压降计算;基于微小通道的计算方法中,Lee-Lee模型与实验值符合程度较好,但在一定的参数范围内仍存在较大误差。提出基于Chen模型的ChisholmC系数方法的修正关系式,式中综合考虑了矩形通道宽高比、全液相雷诺数和L-M参数对ChisholmC系数的影响,修正关系式与实验值符合较好。
The frictional resistance characteristics of air-water mixture flow in two rectangular channels with different aspect ratios were studied under atmospheric condition.Prediction methods for conventional as well as micro-and mini-channels were verified and evaluated against the experimental data.It is shown that the corrections for conventional channels poorly predict the two-phase frictional resistance in narrow rectangular channel.The Lee-Lee correction fits well with the experimental data,but there still exists deviations in a certain parameter ranges.The modified correction of Chisholm C method based on Chen＇s model was given by considering aspect ratio,all liquid Reynolds number and L-M parameter,and it has a good agreement with the experimental data.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2013年第5期740-744,共5页
Atomic Energy Science and Technology
基金
国家自然科学基金资助项目(11175050)
高等学校博士点专项科研基金资助项目(20092304110020)
国防重点学科实验室基金资助项目(HEUFN1102)
