典型文献
Comparison between homogeneous and separated flow models of isobutane flowing through adiabatic capillary tubes
文献摘要：
Capillary tubes have been widely used as expansion devices in small-scale refrigeration and heat-pump systems. However, adiabatic flow through a capillary tube is extremely complicated, despite its simple geometry. This work presents a comparative study on the homogenous flow model and separated flow model, which were used to simulate the flow of isobutene (R600a) through adiabatic capillary tubes. The influence of different combinations of friction factor and two-phase viscosity correlations, and the effect of metastable flow on the flow characteristics were investigated. The pre-dicted mass flow rate was lower when the separated flow model was used. The separated flow model performed better in predicting a mass flow rate over 2 kg·h?1. The Colebrook friction factor correlation combined with the Dukler or McAdams viscosity correlation yielded smaller deviations of 5.43％, 5.49％ and 5.44％, 5.43％ when ignoring and considering the metastable flow, respectively. Additionally, the homogenous flow model adopting the Bittle and Pate friction factor and Dukler viscosity correlations achieved the highest accuracy with a mass flow rate under 2 kg·h?1. The mean error was 4.12％ in the case without metastable flow, and 3.37％ in the case with metastable flow.
文献关键词：
中图分类号：
作者姓名：
Yonghui Shu;Peng Hu;Ibrahim Adnan;Lianghui Zhi;Qi Chen
作者机构：
Department of Thermal Science and Energy Engineering,University of Science and Technology of China,Hefei 230027,China
文献出处：
引用格式：
[1]Yonghui Shu;Peng Hu;Ibrahim Adnan;Lianghui Zhi;Qi Chen-.Comparison between homogeneous and separated flow models of isobutane flowing through adiabatic capillary tubes)[J].中国科学技术大学学报,2022(07):43-57
A类：
Colebrook,Dukler,McAdams,Bittle,Pate
B类：
Comparison,between,homogeneous,separated,models,isobutane,flowing,through,adiabatic,capillary,tubes,Capillary,have,been,widely,used,expansion,devices,scale,refrigeration,heat,pump,systems,However,extremely,complicated,despite,its,simple,geometry,This,work,presents,comparative,study,homogenous,which,were,simulate,isobutene,R600a,influence,different,combinations,friction,two,phase,viscosity,correlations,effect,metastable,characteristics,investigated,dicted,mass,was,lower,when,performed,better,predicting,over,combined,yielded,smaller,deviations,ignoring,considering,respectively,Additionally,adopting,achieved,highest,accuracy,under,mean,error,case,without
AB值：
0.472962
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