Heat transfer investigation of non-newtonian fluid flow in anannular pipe embedded with porous discs: A turbulent study
1Department of Mechanical Engineering, Nour Branch, Islamic Azad University, Nour, Iran
2Faculty of Mechanical Engineering, University of Guilan, Rasht, Iran
3Faculty of Engineering, Amol University of Special Modern Technologies, Amol, Iran
2Faculty of Mechanical Engineering, University of Guilan, Rasht, Iran
3Faculty of Engineering, Amol University of Special Modern Technologies, Amol, Iran
J Ther Eng 2022; 2(8): 235-248 DOI: 10.18186/thermal.1086202
Abstract
Porous materials are used in thermal devices such as heat exchangers to improvement the heat transfer. The heat transfer of a non-Newtonian fluid flow in an annular pipe with porous discs is numerically investigated in this paper. The flow regime in both porous medium and clear region are considered to be turbulent. The effects of power-law index of the non-Newtonian fluid and porous discs pitch variationson the heat transfer rate, friction coefficient are studied and compared to each other for two porous layer thicknesses. Finally, the thermal performance is defined which determines the optimum porous media and non-Newtonian fluid characteristics in the annular pipe.
Keywords: Non-Newtonian Fluid, Turbulent Flow, Nusselt Number, Annular Pipe, Porous Medium
