实验流体力学2025，Vol.39Issue(6)：26-33,8.DOI:10.11729/syltlx20220132
基于双层温敏漆测温的固着液滴蒸发传热特性研究
Study on evaporation heat transfer characteristics of sessile droplets based on temperature measurement of double layer temperature sensitive paint
摘要
Abstract
As a new non-contact temperature measurement method,temperature sensitive paint has the advantages of low cost and fast response.In this paper,a temperature measurement technology based on double layer temperature sensitive paint was used to study the heat transfer characteristics of sessile droplet evaporation.The temperature distributions at the contact surface between the droplet and the heating substrate and at the back of the substrate were obtained by measuring the temperature with a double-layer temperature sensitive paint.A one-dimensional unsteady inverse heat conduction model was established to obtain the heat flux distribution at the interface between the droplet and the heating substrate.The results show that the droplet vaporization process can be divided into three stages:initial heating stage,convection unit evaporation stage and film evaporation stage.In the initial heating stage,the heat flux increases rapidly.In the convection unit evaporation stage,the heat flux decreases gradually and remains basically unchanged.In the film evaporation stage,the heat flux first increases,and then decreases rapidly as the droplet almost completely evaporates.The reliability of the experimental method is verified by checking the heat quantity of droplet evaporation.The research results in this paper are helpful to broaden the experimental measurement method of heat flux during phase change heat transfer.关键词
温敏漆/液滴蒸发/传热特性/温度分布Key words
temperature sensitive paint/droplet evaporation/heat transfer characteristics/temperature distribution分类
能源科技引用本文复制引用
LI Bingjie,ZHANG Shulei,DONG Xinyu,WANG Teng,MI Menglong,LIU Lu..基于双层温敏漆测温的固着液滴蒸发传热特性研究[J].实验流体力学,2025,39(6):26-33,8.基金项目
国家自然科学基金项目(51876065) （51876065）
河北省自然科学基金项目(E2019502183) （E2019502183）
中央高校基本科研业务费项目(2020MS108,2020MS144) （2020MS108,2020MS144）
