Thermographic observation of high-frequency ethanol droplet train impingement on heated aluminum and glass surfaces
The present study investigates thermal gradients on the heated aluminum and glass surfaces during ethanol droplet train impingement in the surface temperature ranges of 140°C–240°C. The ethanol droplet impingement is applied with an incline of 63 degrees and the droplet diameter is 0.2 mm in both al...
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sg-ntu-dr.10356-1588142022-05-24T01:26:52Z Thermographic observation of high-frequency ethanol droplet train impingement on heated aluminum and glass surfaces Kanbur, Baris Burak Heng, Sheng Quan Duan, Fei School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering::Fluid mechanics Science::Physics::Heat and thermodynamics Droplet Impingement Boiling The present study investigates thermal gradients on the heated aluminum and glass surfaces during ethanol droplet train impingement in the surface temperature ranges of 140°C–240°C. The ethanol droplet impingement is applied with an incline of 63 degrees and the droplet diameter is 0.2 mm in both aluminum and glass surface experiments. Thermal gradients are observed with a thermographic camera. Compared to the glass, the aluminum surface has very small liquid accumulations and better evaporation performance thanks to its higher thermal conductivity. Low thermal conductivity of glass results in higher thermal gradients on the surface. The droplet impact area on the aluminum surface is extremely smaller than the impact area on the glass surface. It is found that the liquid accumulation area is not symmetrical like horizontal droplet train impingement studies as the inclined flow propagates the ethanol flow through its flow direction. Also, the droplet train impact area decreases by rising the surface temperature because higher temperature values achieve greater surface energy levels that accelerate the evaporation rate. Published version 2022-05-24T01:26:52Z 2022-05-24T01:26:52Z 2022 Journal Article Kanbur, B. B., Heng, S. Q. & Duan, F. (2022). Thermographic observation of high-frequency ethanol droplet train impingement on heated aluminum and glass surfaces. Fluid Dynamics & Materials Processing. https://dx.doi.org/10.32604/fdmp.2022.021792 1555-256X https://hdl.handle.net/10356/158814 10.32604/fdmp.2022.021792 en Fluid Dynamics & Materials Processing © 2022 The Author(s). Published by Tech Science Press. This work is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. application/pdf |
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Engineering::Mechanical engineering::Fluid mechanics Science::Physics::Heat and thermodynamics Droplet Impingement Boiling Kanbur, Baris Burak Heng, Sheng Quan Duan, Fei Thermographic observation of high-frequency ethanol droplet train impingement on heated aluminum and glass surfaces |
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The present study investigates thermal gradients on the heated aluminum and glass surfaces during ethanol droplet train impingement in the surface temperature ranges of 140°C–240°C. The ethanol droplet impingement is applied with an incline of 63 degrees and the droplet diameter is 0.2 mm in both aluminum and glass surface experiments. Thermal gradients are observed with a thermographic camera. Compared to the glass, the aluminum surface has very small liquid accumulations and better evaporation performance thanks to its higher thermal conductivity. Low thermal conductivity of glass results in higher thermal gradients on the surface. The droplet impact area on the aluminum surface is extremely smaller than the impact area on the glass surface. It is found that the liquid accumulation area is not symmetrical like horizontal droplet train impingement studies as the inclined flow propagates the ethanol flow through its flow direction. Also, the droplet train impact area decreases by rising the surface temperature because higher temperature values achieve greater surface energy levels that accelerate the evaporation rate. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Kanbur, Baris Burak Heng, Sheng Quan Duan, Fei |
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Article |
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Kanbur, Baris Burak Heng, Sheng Quan Duan, Fei |
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Kanbur, Baris Burak |
title |
Thermographic observation of high-frequency ethanol droplet train impingement on heated aluminum and glass surfaces |
title_short |
Thermographic observation of high-frequency ethanol droplet train impingement on heated aluminum and glass surfaces |
title_full |
Thermographic observation of high-frequency ethanol droplet train impingement on heated aluminum and glass surfaces |
title_fullStr |
Thermographic observation of high-frequency ethanol droplet train impingement on heated aluminum and glass surfaces |
title_full_unstemmed |
Thermographic observation of high-frequency ethanol droplet train impingement on heated aluminum and glass surfaces |
title_sort |
thermographic observation of high-frequency ethanol droplet train impingement on heated aluminum and glass surfaces |
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2022 |
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https://hdl.handle.net/10356/158814 |
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