Open AccessEffects of Normalized Periodic Unit Length of Superhydrophobic Transverse Grooves on Thermal Developing Flow in Tube
Author(s) -
Kok Hwa Yu,
Sak Jie Tan,
Mohd Yusmaidie Aziz,
Mohd Syakirin Rusdi,
Wei Shyang Chang
Publication year - 2022
Publication title -
journal of advanced research in fluid mechanics and thermal sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.247
H-Index - 13
ISSN - 2289-7879
DOI - 10.37934/arfmts.92.2.94103
Subject(s) - materials science , heat transfer , tube (container) , transverse plane , thermal , mechanics , flow (mathematics) , volumetric flow rate , composite material , thermodynamics , structural engineering , physics , engineering
The flow dynamics and heat transfer in fully-developed flow region changes significantly with the size of the water-repellent microstructures. It is noted that the hydrophobic coated surface could reduce the wall friction, thereby increasing the mass flow rate through the tube. This leads to the interest in employing this salient surface for heat transfer application. Numerical study is carried out on thermal entrance flow under the influence of textured superhydrophobic surface with transverse grooves and ribs. In this study, the effect of normalized periodic unit length is investigated. Under constant heat transfer rate condition, it is revealed that patterning the water repellent surface along the tube wall can be beneficial for heat transfer application, in particularly in the thermal developing region, with the predicted water temperature to be consistently lower than that of smooth walls.