Experimental study on the interfacial heat transfer of sessile droplet evaporation using temperature-sensitive paint
•The contact line profile captured by TSP is consistent with that by an infrared camera.•Three stages could be observed during sessile droplet evaporation on a heated substrate.•The occurrence of convection cells leads to obvious temperature gradient on interface.•The heat flux at the contact line i...
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Veröffentlicht in: | Experimental thermal and fluid science 2021-10, Vol.128, p.110436, Article 110436 |
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creator | Liu, Lu Zhang, Kaiqi Liu, Haiyan Zhang, Shulei Mi, Menglong |
description | •The contact line profile captured by TSP is consistent with that by an infrared camera.•Three stages could be observed during sessile droplet evaporation on a heated substrate.•The occurrence of convection cells leads to obvious temperature gradient on interface.•The heat flux at the contact line is higher than that at the centre.
The present work is aimed at analyzing changes in the interfacial temperature distribution and interfacial heat flux distribution during sessile droplet evaporation. In particular, two kinds of nonintrusive measurement techniques, temperature-sensitive paint (TSP) and infrared imaging were used simultaneously. TSP was used to capture the interfacial temperature distribution, and then a one-dimensional unsteady transient model was established to obtain the heat flux distribution. An infrared camera was applied to observe the thermal patterns during droplet evaporation from the top view. Three kinds of liquids, pentane, HFE-7100 and hexane, were used during our experiments, and the experimental results show that the contact line profile captured by TSP was consistent with that captured by an infrared camera. Three stages could be observed during droplet evaporation: initial droplet heating, convection cell evaporation and thin film evaporation. Convection cells could be observed in the infrared images during the second stage, and an obvious temperature gradient at the contact surface could also be seen from the images captured by TSP. In addition, the heat flux at the contact line was higher than that at the centre. Finally, the heat dissipation due to droplet evaporation could also be obtained by double integration of interfacial heat flux data with contact area and evaporation time, which further demonstrated the soundness of the present experimental and calculated methods. |
doi_str_mv | 10.1016/j.expthermflusci.2021.110436 |
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The present work is aimed at analyzing changes in the interfacial temperature distribution and interfacial heat flux distribution during sessile droplet evaporation. In particular, two kinds of nonintrusive measurement techniques, temperature-sensitive paint (TSP) and infrared imaging were used simultaneously. TSP was used to capture the interfacial temperature distribution, and then a one-dimensional unsteady transient model was established to obtain the heat flux distribution. An infrared camera was applied to observe the thermal patterns during droplet evaporation from the top view. Three kinds of liquids, pentane, HFE-7100 and hexane, were used during our experiments, and the experimental results show that the contact line profile captured by TSP was consistent with that captured by an infrared camera. Three stages could be observed during droplet evaporation: initial droplet heating, convection cell evaporation and thin film evaporation. Convection cells could be observed in the infrared images during the second stage, and an obvious temperature gradient at the contact surface could also be seen from the images captured by TSP. In addition, the heat flux at the contact line was higher than that at the centre. Finally, the heat dissipation due to droplet evaporation could also be obtained by double integration of interfacial heat flux data with contact area and evaporation time, which further demonstrated the soundness of the present experimental and calculated methods.</description><identifier>ISSN: 0894-1777</identifier><identifier>EISSN: 1879-2286</identifier><identifier>DOI: 10.1016/j.expthermflusci.2021.110436</identifier><language>eng</language><publisher>Philadelphia: Elsevier Inc</publisher><subject>Convection ; Convection cells ; Convection heating ; Droplets ; Evaporation ; Fluctuations ; Heat ; Heat flux ; Heat transfer ; Hexanes ; Infrared cameras ; Infrared imagery ; Infrared imaging ; Interfacial heat flux ; Measurement techniques ; Nonintrusive measurement ; Pentane ; Sessile droplet ; Temperature distribution ; Temperature gradients ; Temperature-sensitive paint ; Temperature-sensitive paints ; Thin films</subject><ispartof>Experimental thermal and fluid science, 2021-10, Vol.128, p.110436, Article 110436</ispartof><rights>2021 Elsevier Inc.</rights><rights>Copyright Elsevier Science Ltd. Oct 1, 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c424t-67ea335de4052b127f506e2afc7080c3192ce99520b4f8aef4bdbd0c1eb144f23</citedby><cites>FETCH-LOGICAL-c424t-67ea335de4052b127f506e2afc7080c3192ce99520b4f8aef4bdbd0c1eb144f23</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.expthermflusci.2021.110436$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Liu, Lu</creatorcontrib><creatorcontrib>Zhang, Kaiqi</creatorcontrib><creatorcontrib>Liu, Haiyan</creatorcontrib><creatorcontrib>Zhang, Shulei</creatorcontrib><creatorcontrib>Mi, Menglong</creatorcontrib><title>Experimental study on the interfacial heat transfer of sessile droplet evaporation using temperature-sensitive paint</title><title>Experimental thermal and fluid science</title><description>•The contact line profile captured by TSP is consistent with that by an infrared camera.•Three stages could be observed during sessile droplet evaporation on a heated substrate.•The occurrence of convection cells leads to obvious temperature gradient on interface.•The heat flux at the contact line is higher than that at the centre.
The present work is aimed at analyzing changes in the interfacial temperature distribution and interfacial heat flux distribution during sessile droplet evaporation. In particular, two kinds of nonintrusive measurement techniques, temperature-sensitive paint (TSP) and infrared imaging were used simultaneously. TSP was used to capture the interfacial temperature distribution, and then a one-dimensional unsteady transient model was established to obtain the heat flux distribution. An infrared camera was applied to observe the thermal patterns during droplet evaporation from the top view. Three kinds of liquids, pentane, HFE-7100 and hexane, were used during our experiments, and the experimental results show that the contact line profile captured by TSP was consistent with that captured by an infrared camera. Three stages could be observed during droplet evaporation: initial droplet heating, convection cell evaporation and thin film evaporation. Convection cells could be observed in the infrared images during the second stage, and an obvious temperature gradient at the contact surface could also be seen from the images captured by TSP. In addition, the heat flux at the contact line was higher than that at the centre. Finally, the heat dissipation due to droplet evaporation could also be obtained by double integration of interfacial heat flux data with contact area and evaporation time, which further demonstrated the soundness of the present experimental and calculated methods.</description><subject>Convection</subject><subject>Convection cells</subject><subject>Convection heating</subject><subject>Droplets</subject><subject>Evaporation</subject><subject>Fluctuations</subject><subject>Heat</subject><subject>Heat flux</subject><subject>Heat transfer</subject><subject>Hexanes</subject><subject>Infrared cameras</subject><subject>Infrared imagery</subject><subject>Infrared imaging</subject><subject>Interfacial heat flux</subject><subject>Measurement techniques</subject><subject>Nonintrusive measurement</subject><subject>Pentane</subject><subject>Sessile droplet</subject><subject>Temperature distribution</subject><subject>Temperature gradients</subject><subject>Temperature-sensitive paint</subject><subject>Temperature-sensitive paints</subject><subject>Thin films</subject><issn>0894-1777</issn><issn>1879-2286</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqNkD1PwzAQhi0EEqXwHyzBmmA7dj4kFlS1gFSJBWbLcc7UUZoE26naf4-rsLAx3XDv-5zuQeiBkpQSmj-2KRzHsAO3N93ktU0ZYTSllPAsv0ALWhZVwliZX6IFKSue0KIortGN9y0hpGSULFBYH0dwdg99UB32YWpOeOhxhGLbB3BGaRsXO1ABB6d6b8DhwWAP3tsOcOOGsYOA4aDGwalgY3nytv_CAfaRrMLkIPHQexvsAfCoIvYWXRnVebj7nUv0uVl_rF6T7fvL2-p5m2jOeEjyAlSWiQY4EaymrDCC5MCU0QUpic5oxTRUlWCk5qZUYHjd1A3RFGrKuWHZEt3P3NEN3xP4INthcn08KZkQWSm4yGlMPc0p7QbvHRg5RiHKnSQl8uxZtvKvZ3n2LGfPsb6Z6xA_OVhwMiag19BYBzrIZrD_A_0AiNSTEg</recordid><startdate>20211001</startdate><enddate>20211001</enddate><creator>Liu, Lu</creator><creator>Zhang, Kaiqi</creator><creator>Liu, Haiyan</creator><creator>Zhang, Shulei</creator><creator>Mi, Menglong</creator><general>Elsevier Inc</general><general>Elsevier Science Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7TB</scope><scope>7U5</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20211001</creationdate><title>Experimental study on the interfacial heat transfer of sessile droplet evaporation using temperature-sensitive paint</title><author>Liu, Lu ; Zhang, Kaiqi ; Liu, Haiyan ; Zhang, Shulei ; Mi, Menglong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c424t-67ea335de4052b127f506e2afc7080c3192ce99520b4f8aef4bdbd0c1eb144f23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Convection</topic><topic>Convection cells</topic><topic>Convection heating</topic><topic>Droplets</topic><topic>Evaporation</topic><topic>Fluctuations</topic><topic>Heat</topic><topic>Heat flux</topic><topic>Heat transfer</topic><topic>Hexanes</topic><topic>Infrared cameras</topic><topic>Infrared imagery</topic><topic>Infrared imaging</topic><topic>Interfacial heat flux</topic><topic>Measurement techniques</topic><topic>Nonintrusive measurement</topic><topic>Pentane</topic><topic>Sessile droplet</topic><topic>Temperature distribution</topic><topic>Temperature gradients</topic><topic>Temperature-sensitive paint</topic><topic>Temperature-sensitive paints</topic><topic>Thin films</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Lu</creatorcontrib><creatorcontrib>Zhang, Kaiqi</creatorcontrib><creatorcontrib>Liu, Haiyan</creatorcontrib><creatorcontrib>Zhang, Shulei</creatorcontrib><creatorcontrib>Mi, Menglong</creatorcontrib><collection>CrossRef</collection><collection>Aqualine</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Experimental thermal and fluid science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Lu</au><au>Zhang, Kaiqi</au><au>Liu, Haiyan</au><au>Zhang, Shulei</au><au>Mi, Menglong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental study on the interfacial heat transfer of sessile droplet evaporation using temperature-sensitive paint</atitle><jtitle>Experimental thermal and fluid science</jtitle><date>2021-10-01</date><risdate>2021</risdate><volume>128</volume><spage>110436</spage><pages>110436-</pages><artnum>110436</artnum><issn>0894-1777</issn><eissn>1879-2286</eissn><abstract>•The contact line profile captured by TSP is consistent with that by an infrared camera.•Three stages could be observed during sessile droplet evaporation on a heated substrate.•The occurrence of convection cells leads to obvious temperature gradient on interface.•The heat flux at the contact line is higher than that at the centre.
The present work is aimed at analyzing changes in the interfacial temperature distribution and interfacial heat flux distribution during sessile droplet evaporation. In particular, two kinds of nonintrusive measurement techniques, temperature-sensitive paint (TSP) and infrared imaging were used simultaneously. TSP was used to capture the interfacial temperature distribution, and then a one-dimensional unsteady transient model was established to obtain the heat flux distribution. An infrared camera was applied to observe the thermal patterns during droplet evaporation from the top view. Three kinds of liquids, pentane, HFE-7100 and hexane, were used during our experiments, and the experimental results show that the contact line profile captured by TSP was consistent with that captured by an infrared camera. Three stages could be observed during droplet evaporation: initial droplet heating, convection cell evaporation and thin film evaporation. Convection cells could be observed in the infrared images during the second stage, and an obvious temperature gradient at the contact surface could also be seen from the images captured by TSP. In addition, the heat flux at the contact line was higher than that at the centre. Finally, the heat dissipation due to droplet evaporation could also be obtained by double integration of interfacial heat flux data with contact area and evaporation time, which further demonstrated the soundness of the present experimental and calculated methods.</abstract><cop>Philadelphia</cop><pub>Elsevier Inc</pub><doi>10.1016/j.expthermflusci.2021.110436</doi></addata></record> |
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subjects | Convection Convection cells Convection heating Droplets Evaporation Fluctuations Heat Heat flux Heat transfer Hexanes Infrared cameras Infrared imagery Infrared imaging Interfacial heat flux Measurement techniques Nonintrusive measurement Pentane Sessile droplet Temperature distribution Temperature gradients Temperature-sensitive paint Temperature-sensitive paints Thin films |
title | Experimental study on the interfacial heat transfer of sessile droplet evaporation using temperature-sensitive paint |
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