Open AccessVortex heat transfer enhancement by energy-efficient structured plates with zigzag grooves for micro- and macro-scale energy and electronic devices
Author(s) -
С. А. Исаев,
A. I. Leontiev,
Д. В. Никущенко,
Dehai Kong,
Kung Ming Chung,
A. G. Sudakov
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2150/1/012004
Subject(s) - zigzag , vortex , boundary layer , heat transfer enhancement , turbulence , materials science , mechanics , heat transfer , reynolds number , flow (mathematics) , convective heat transfer , nusselt number , trench , radius , geometry , physics , composite material , layer (electronics) , mathematics , computer security , computer science
An energy-efficient flat surface is formed when applying single-row cross-flow zigzag grooves () in a dense arrangement. Convective heat transfer is considered in turbulent flow around a longitudinal fragment of a plate with a length of 40 and a width of 4 with a package of 14 singlerow inclined backslash(\)-shaped grooves with symmetry conditions at the lateral boundaries. The width of the grooves is 1, the depth is 0.25, the edge rounding radius is 0.2, the angles of inclination are 30°, 45°, 50° and 60°, the pitch is 2.4, the Reynolds number is 104, and the thickness of the incoming boundary layer is 0.175. The phenomenon of anomalous enhancement of the separation flow and heat transfer in zigzag grooves and acceleration of the wall flow discovered in inclined oval-trench dimples has been confirmed.