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基于数字图像投影技术的三维液膜流动测量研究

宋华振 兆环宇 朱程香 王正之 田伟 李海星 朱春玲

宋华振,兆环宇,朱程香,等. 基于数字图像投影技术的三维液膜流动测量研究[J]. 实验流体力学,2021,35(5):106-114 doi: 10.11729/syltlx20200031
引用本文: 宋华振,兆环宇,朱程香,等. 基于数字图像投影技术的三维液膜流动测量研究[J]. 实验流体力学,2021,35(5):106-114 doi: 10.11729/syltlx20200031
SONG H Z,ZHAO H Y,ZHU C X,et al. Three-dimensional liquid film flow measurement based on digital image projection technology[J]. Journal of Experiments in Fluid Mechanics, 2021,35(5):106-114. doi: 10.11729/syltlx20200031
Citation: SONG H Z,ZHAO H Y,ZHU C X,et al. Three-dimensional liquid film flow measurement based on digital image projection technology[J]. Journal of Experiments in Fluid Mechanics, 2021,35(5):106-114. doi: 10.11729/syltlx20200031

基于数字图像投影技术的三维液膜流动测量研究

doi: 10.11729/syltlx20200031
基金项目: 国家重点基础研究发展(973)计划(2015CB755800);国家自然科学基金(11832012;51806105);江苏省自然科学基金(BK20180442);中国博士后科学基金(2018M642253);江苏省博士后科研资助计划(2018K294C);江苏省高校优势学科建设工程资助项目;中国空气动力研究与发展中心飞行器结冰与防除冰重点实验室基金(AIADL20180402)
详细信息
    作者简介:

    宋华振:(1995),男,山东德州人,硕士研究生。研究方向:水膜流动实验研究、非接触测量。通信地址:江苏省南京市秦淮区御道街29号南京航空航天大学航空学院(210016)。E-mail:1501141520@qq.com

    通讯作者:

    E-mail:clzhu@nuaa.edu.cn

  • 中图分类号: V211; O359.1

Three-dimensional liquid film flow measurement based on digital image projection technology

  • 摘要: 流体薄膜流动定量测量是分析结冰相变传热过程的必要手段。基于图像处理的数字图像投影技术(DIP)可实现对流体薄膜的非侵入式定量测量。对DIP技术的基本原理、图像互相关算法和标定方法进行了介绍,设计并搭建了DIP测量系统和平板水膜流动实验台。DIP测量系统的整体误差在5%以内,证明了系统的可靠性与准确性。在平板水膜流动实验台上开展了一系列水膜流动实验,采用DIP测量系统复原了平板水膜流动的三维全貌。通过测量结果拟合得出平均水膜高度、无量纲水膜高度与水膜雷诺数之间的关系,并与理论推导和文献实验结果进行对比,整体趋势一致。
  • 图  1  DIP技术原理图

    Figure  1.  DIP technology diagram

    图  2  网格点位移图

    Figure  2.  Grid intersection displacement diagram

    图  3  DIP标定示意图

    Figure  3.  DIP calibration diagram

    图  4  DIP标定结果图

    Figure  4.  DIP calibration result diagram

    图  5  平板水膜流动实验台

    Figure  5.  Flat water film flow test setup

    图  6  实验台精度

    Figure  6.  Test setup precision

    图  7  测量结果对比图

    Figure  7.  Comparison of measurement results

    图  8  实验采集图像与计算结果对比图

    Figure  8.  Comparison of test photo and calculation

    图  9  水膜流动DIP计算结果(Ua=17 m/s、Ref =16.5~188.6)

    Figure  9.  DIP calculation results of water film flow (Ua=17 m/s and Ref =16.5-188.6)

    图  10  水膜剖面表面波形图

    Figure  10.  Water film surface wave profile

    图  11  平均水膜厚度对比图

    Figure  11.  Comparison of average film thickness

    图  12  无量纲水膜厚度对比图

    Figure  12.  Comparison of Dimensionless Water Film Thickness

    表  1  无量纲水膜厚度模型

    Table  1.   Dimensionless Film Thickness Models

    AuthorAppliedRefRelation
    Kosky & Staub[21]Horizontal
    condense flow
    13.0~370.0 $h^{+}=1.316\,0 \ { {Re} }_{ {\rm{f} } }^{0.529\,9}$
    Rishikesan[4]Plate flow26.0~128.0 $\,\, h^{+}=1.292\,0 \ {{Re} }_{ {\rm{f} } }^{0.528\,9}$
    Hughmark[22]Upward flow25.0~250.0$h^{+}=0.874\,0 \ { {Re} }_{ {\rm{f} } }^{2 / 3}$
    Present workPlate flow16.0~190.0 $h^{+}=1.397\,3\ {{Re} }_{ {\rm{f} } }^{0.568\,9}$
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-03-09
  • 修回日期:  2020-04-03
  • 网络出版日期:  2021-11-11
  • 刊出日期:  2021-10-25

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