绝热毛细管流量快速计算模型  

Fast Calculation Model of Adiabatic Capillary Tube Flow

作　　者：翟千钧[1] 谷波[1] 

机构地区：[1]上海交通大学制冷与低温工程研究所

出　　处：《上海交通大学学报》2010年第8期1140-1144,共5页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(50876059)

摘　　要：针对毛细管进口压力、状态以及结构尺寸变化对毛细管流量的影响,提出一种新的毛细管流量快速计算公式.该公式为显式形式,不存在迭代,保证了流量计算的快速性和绝对稳定性.在给定出口背压情况下,可判定出口是否为临界流.利用取点软件从ASHER Handbook诺模图上取点进行验证,结果表明,流量平均相对误差为2.17%,最大相对误差为13.42%,结果较理想;对毛细管内径、长度和进口过冷度（干度）变化引起流量变化进行分析,结果表明,所提出的模型可直接用于毛细管流量计算.For the impact of capillary import pressure,import status,and structural changes on capillary flow,this paper proposed a new fast calculation formula.The formula has the explicit form,in which does not exist iteration,and it guarantees high-speed and absolute stability of the flow calculation.When the back pressure is given,the export flow can be judged whether it is a critical flow.Software is used to check point from the ASHER Handbook nomogram and a verification is given.The result shows that the average relative deviation is 2.17%,the largest relative deviation is 13.42%,the result is ideal.At the same time,the influence of the capillary diameter,length,and import status on the capillary flow is analyzed.The model can be used in capillary flow calculation model directly.

关 键 词：毛细管 流量 快速计算 临界流 诺模图 

分 类 号：TB65[一般工业技术—制冷工程]