کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
668667 | 1458764 | 2012 | 10 صفحه PDF | دانلود رایگان |
This paper presents a numerical investigation of heat transfer and hydrodynamic behavior of various types of water-based nanofluids inside a typical radial flow cooling device. Turbulent radial nanofluid flow between two parallel disks with axial injection is considered. Several turbulence models were evaluated. The RANS-based κ − ω SST turbulence model was chosen for subsequent simulations. A single phase fluid approach was used throughout with temperature dependant nanofluid effective properties. Results show that although heat transfer enhancement is found for all types of nanofluids considered, energy-based performance comparisons indicate that they do not necessarily represent the most efficient coolants for this type of application and flow conditions.
► Turbulent nanofluid radial flow investigation.
► k-omega turbulence model good choice for this application.
► Heat transfer increases with particle volume fraction and Reynolds number.
► Performance evaluation criterion and pumping power analysis.
► Overall nanofluid performance not beneficial in the considered conditions.
Journal: International Journal of Thermal Sciences - Volume 58, August 2012, Pages 120–129