本文已被:浏览 1414次 下载 578次
投稿时间:2018-03-06
投稿时间:2018-03-06
中文摘要: 采用欧拉-拉格朗日两相法研究了层流范围内方形管内血小板形和球形两种纳米流体的非线性特性。从努塞尔数、摩擦系数和充分发展段内的某个点的速度值分析了血小板形纳米流体的非线性特性,并与球形纳米流体进行了比较。结果表明:随着De数的变化,弯管内血小板形和球形纳米流体的非线性存在3种不同的解分枝,且在7个不同的De数下存在分枝结构;在同一De数下,弯管内血小板形纳米流体的平均努塞尔数和摩擦系数都要高于球形纳米流体。
Abstract:The Euler-Lagrange two-phase method is used to study the nonlinear behavior of two different shapes of the platelet of nanofluids in a square tube in the laminar flow range.The nonlinear characteristics of platelet nanofluids are analyzed from the Nusselt number,the friction coefficient and the velocities at points within the well-developed segment and are compared with that of spherical nanofluids.The results show that with the changes of De number,there are 3 different dendrites in the nonlinearity of platelet-shaped nanofluids in the elbow,and their branching structures are found to be under 7 different De numbers.Under the same De number,the averge Nusselt number and the friction coefficient of the platelet nanofluids are both higher than the spherical nanofluids.
keywords: non-linear platelet spherical square curved pipe
文章编号:20182008 中图分类号: 文献标志码:
基金项目:上海市自然科学基金(15ZR1417700);上海高校特聘教授(东方学者)岗位计划资助项目;上海市教育发展基金会和上海市教育委员会"曙光计划"资助项目(14SG50)。
作者 | 单位 | |
田海栋 | 上海电力学院 能源与机械工程学院 | |
刘方 | 上海电力学院 能源与机械工程学院 | fangliu@shiep.edu.cn |
张冬翔 | 上海电力学院 能源与机械工程学院 | |
蔡洋 | 上海电力学院 能源与机械工程学院 |
引用文本:
田海栋,刘方,张冬翔,等.弯管内纳米流体非线性特性模拟与分析[J].上海电力大学学报,2018,34(2):135-140.
TIAN Haidong,LIU Fang,ZHANG Dongxiang,et al.Simulation and Analysis of Nonlinear Characteristics of Nanofluids in a Curved Pipe[J].Journal of Shanghai University of Electric Power,2018,34(2):135-140.
田海栋,刘方,张冬翔,等.弯管内纳米流体非线性特性模拟与分析[J].上海电力大学学报,2018,34(2):135-140.
TIAN Haidong,LIU Fang,ZHANG Dongxiang,et al.Simulation and Analysis of Nonlinear Characteristics of Nanofluids in a Curved Pipe[J].Journal of Shanghai University of Electric Power,2018,34(2):135-140.