常州大学学报（自然科学版）2024，Vol.36Issue(4)：55-62,8.DOI:10.3969/j.issn.2095-0411.2024.04.007
管道中重质原油流变特性及流动传热规律
Rheological characteristics and flow laws of heavy crude oil in a pipe
摘要
Abstract
The flow process of heavy crude oil has a strong historical memory and global correlation,and the classical Newton constitutive model cannot effectively describe its theological characteristics.In this paper,a spatial fractional constitutive model was established to well describe the rheological properties of heavy crude oil.Meanwhile,the flow and heat transfer processes were numerically simu-lated based on the finite element method(FEM).The influence of the fractional model order on the flow and heat transfer of crude oil was mainly studied,and the variations of the average Nusselt num-ber and the friction resistance coefficient with the spatial fractional order were analyzed.In addition,the changes of local Nusselt number and convective heat transfer coefficient during the heat transfer process of crude oil were compared under two thermal boundary conditions,namely,the constant wall tem-perature and the heat flux.The result showed that the rheological property of crude oil was known as shear thinning;meanwhile,the flow speed of crude oil was obviously improved and the heat transfer performance was effectively enhanced with the increase of order a(a＞1).Therefore,the rheological characteristics and flow as well as heat transfer laws of crude oil were deeply studied,which can provide theoretical guidance for further improving crude oil transport efficiency and economic operation in a pipe.关键词
重质原油/管道/分数阶本构模型/数值模拟/流动与传热Key words
heavy crude oil/pipe/fractional constitutive model/numerical simulation/flow and heat transfer分类
能源科技引用本文复制引用
常爱莲,黄远翔,李倩倩..管道中重质原油流变特性及流动传热规律[J].常州大学学报（自然科学版）,2024,36(4):55-62,8.基金项目
江苏省自然科学青年基金资助项目(BK20220615) （BK20220615）
江苏省高等学校基础科学面上资助项目(22KJB130001) （22KJB130001）
江苏省能源动力高端装备工程研究中心开放课题基金资助项目(JSNYDL-202208). （JSNYDL-202208）
