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Published in 2019 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-019-1043-1
Abstract: Friction factor and heat transfer characteristics of Al2O3/water nano-particle inside the twisted square duct (TSD) using water as base fluid numerically investigated. A uniform heat flux applied on the external walls. Three-dimensional (3D) analysis of…
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Keywords:
fluid;
twisted square;
heat transfer;
square duct ... See more keywords
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Published in 2018 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2018.391
Abstract: We use a direct numerical simulations (DNS) database for turbulent flow in a square duct up to bulk Reynolds number $Re_{b}=40\,000$ to quantitatively analyse the role of secondary motions on the mean flow structure. For…
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Keywords:
secondary motions;
role;
role secondary;
square duct ... See more keywords
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Published in 2018 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2018.811
Abstract: Direct numerical simulation of incompressible turbulence in a straight square duct finds the post-transition flow evolving substantially, and for Reynolds numbers based on the friction velocity and duct hydraulic radius greater than 600 a two-structure…
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Keywords:
duct;
streamwise vorticity;
post transitional;
straight square ... See more keywords
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Published in 2017 at "Thermal Science"
DOI: 10.2298/tsci160102150a
Abstract: In this paper we numerically study the mixed convection in hydrodynamically as well as thermally developed incompressible laminar flow of nanofluids in a vertical square duct subject to the thermal boundary condition of constant heat…
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Keywords:
spectral method;
number;
square duct;
vertical square ... See more keywords
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Published in 2017 at "Engineering Journal"
DOI: 10.4186/ej.2017.21.7.485
Abstract: Thermal and friction loss characteristics in a square-duct heat exchanger fitted with inclinedbaffles are experimentally examined. Air as the test fluid enters the test duct having a uniform surface heatflux. The baffles are placed repeatedly…
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Keywords:
transfer pressure;
heat transfer;
heat;
square duct ... See more keywords