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内置扰流柱的人字形板式换热器的数值模拟

刘凯 付婷 曾良才 汪朝晖

刘凯, 付婷, 曾良才, 汪朝晖. 内置扰流柱的人字形板式换热器的数值模拟[J]. 机械科学与技术, 2021, 40(12): 1829-1835. doi: 10.13433/j.cnki.1003-8728.20200300
引用本文: 刘凯, 付婷, 曾良才, 汪朝晖. 内置扰流柱的人字形板式换热器的数值模拟[J]. 机械科学与技术, 2021, 40(12): 1829-1835. doi: 10.13433/j.cnki.1003-8728.20200300
LIU Kai, FU Ting, ZENG Liangcai, WANG Zhaohui. Numerical Simulation of Herringbone Plate Heat Exchanger with Pin-Fin Rows[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(12): 1829-1835. doi: 10.13433/j.cnki.1003-8728.20200300
Citation: LIU Kai, FU Ting, ZENG Liangcai, WANG Zhaohui. Numerical Simulation of Herringbone Plate Heat Exchanger with Pin-Fin Rows[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(12): 1829-1835. doi: 10.13433/j.cnki.1003-8728.20200300

内置扰流柱的人字形板式换热器的数值模拟

doi: 10.13433/j.cnki.1003-8728.20200300
基金项目: 

国家自然科学基金项目 51605345

国家自然科学基金项目 51975425

国家自然科学基金项目 51875419

详细信息
    作者简介:

    刘凯(1995-), 硕士研究生, 研究方向为流体传热, lkai614@163.com

    通讯作者:

    付婷, 副教授, 硕士生导师, futing1234gh@wust.edu.cn

  • 中图分类号: TK17

Numerical Simulation of Herringbone Plate Heat Exchanger with Pin-Fin Rows

  • 摘要: 设计了一系列具有不同尺寸扰流柱的人字形板式换热器, 基于COMSOL软件研究其传热效率。应用了冷热双通道模型, 并创新性的提出了在人字形纹波中间添加空心的扰流柱。通过数值模拟方法研究了冷热双通道模型中的多物理场(流体流动和温度)。仿真结果表明, 扰流柱可以减小通道两侧速度较小的流动区域, 从而使温度传递更加均匀。此外, 内置扰流柱的通道出口处的压力损失很小。为了进一步降低压力损失, 可以在出口处不设置扰流柱。同时, 与传统板片相比, 内置扰流柱板片可将传热效率提高3%。
  • 图  1  波纹板片示意图

    图  2  换热区域原理图

    图  3  网格无关性验证

    图  4  不同直径扰流柱流线图

    图  5  不同通道内的速度云图

    图  6  流体的混合效果

    图  7  不同通道的压力趋势图

    图  8  不同通道的压力等值线图

    图  9  两种板片的温度云图

    图  10  两种板片的温度曲线图

    图  11  沿流动方向温度分布云图

    图  12  通过壁面的传热过程

    表  1  板片的物理结构参数

    结构参数 板片类型
    M A B C D
    波纹高度R/mm 3.5 3.5 3.5 3.5 3.5
    波纹间距S/mm 35 35 35 35 35
    波纹倾角α/(°) 32 32 32 32 32
    扰流柱直径D/mm 0 2 4 6 8
    下载: 导出CSV

    表  2  两种板片的出入口温度  K

    M型 A型 B型 C型 D型
    热通道 入口 372.83 372.82 372.82 372.82 372.81
    出口 334.86 335.59 335.18 333.98 333.31
    冷通道 入口 293.68 293.69 293.68 293.67 293.67
    出口 334.29 333.64 333.82 334.63 335.07
    下载: 导出CSV

    表  3  不同换热器的参数

    换热器类型 出入口 V/(m·s-1) α/(W·(m2·K)-1)
    M型 0.5 17 650
    0.5 13 550
    C型 0.5 18 508
    0.5 16 205
    枕式板式
    换热器
    1.87 18 050
    1.15 13 940
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-06-22
  • 刊出日期:  2021-12-05

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