Journal of Theoretical
and Applied Mechanics

56, 3, pp. 751-763, Warsaw 2018
DOI: 10.15632/jtam-pl.56.3.751

Experimental and numerical study of the heat transfer and pressure drop in triangular chevron channels

Hossein Dolatabadi, Abolfazl Hajizadeh Aghdam
Experimental and Numerical studies were carried out on turbulent heat transfer and friction factor loss through a triangular chevron channel. For uniform wall heat flux equal 1350 (W/m2) using air as a working fluid. Reynolds number varied from 3000 to 10000, phase shifted at the range of 0≤ϕ≤180, with variation distance between chevron surfaces (5 ≤ D ≤ 35 mm). Nu increased and TEF decreased in increasing of Re. The TEF and Nu increased with closing to channel phase shift angle 90˚, the best performance was noticed on phase shift, ϕ=90º. At the end of this paper effect of distance between chevron surfaces presented, The TEF and Nu increased with decreasing to channel distance and the best performance was noticed on closing to D=5(mm).
Keywords: heat transfer, pressure drop, thermal enhancement factor, phase shift


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