Effect of hydrophobicity on enhancement of condensation heat transfer-numerical-investigation
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
Authors
Colleges, School and Institutes
Abstract
In this work, a numerical study has been performed to investigate the effect of surface wettability on the condensation process at different subcooled temperatures using Computational Fluid Dynamics (CFD) simulation in Ansys Fluent. A new CFD model is developed to simulate vapour condensation on vertical smooth surface and surfaces with different hydrophobic coatings in terms of contact angle. Results revealed that the enhancement in condensation heat transfer in terms of heat flux for hydrophobic coatings with contact angle 140° and 150° are about 3 and 2 times, respectively, compared with the plain surface (90°), while less enhancement was achieved for others contact angles. In addition, the highest value of the liquid volume fraction is achieved when hydrophobic coating with contact angle 140° is used.
Details
Original language | English |
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Title of host publication | 2016 International Conference for Students on Applied Engineering (ICSAE) |
Editors | Zeyad Yousif Abdoon Al-Shibaany, Atheer F. Hameed |
Publication status | Published - 9 Jan 2017 |
Event | 1st International Conference for Students on Applied Engineering, ICSAE 2016 - Newcastle Upon Tyne, United Kingdom Duration: 20 Oct 2016 → 21 Oct 2016 |
Publication series
Name | International Conference for Students on Applied Engineering (ICSAE) |
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Conference
Conference | 1st International Conference for Students on Applied Engineering, ICSAE 2016 |
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Country | United Kingdom |
City | Newcastle Upon Tyne |
Period | 20/10/16 → 21/10/16 |
Keywords
- Ansys fluent, CFD, Condensation, Contact angle, Hydrophobic, Superhydrophobic, Surface wettability