Study and ANSYS Simulation on Temperature Distribution of Turbulent Flow of TiO2/Water Nanofluids Through a Circular Tube

Abstract

In this study, nanofluid flow through a circular tube was analysed using ANSYS, where the turbulent flow of TiO₂/water nanofluids for volumetric concentration 0.4% was studied. In this study, the effect of increasing the Reynolds number on the temperature distribution through a circular tube was investigated. The Reynolds numbers adopted were 3000, 4000, 6000, and 8000. The fluid inlet temperature to the pipe is 25°C when the heat flux to the outer wall of the pipe is constant at 70 W/m². The results of the simulation analysis showed that the temperature distribution of the fluid during turbulent flow decreases with increasing Reynolds number in both cases when using water alone or when using the nanofluid TiO2/Water. For comparison between the two cases, the results showed that the outlet temperature of the fluid when using the nanofluid is lower than when using water alone, when changing the Reynolds number from 3000 to 8000, where for water alone, it was 48 °C, 42 °C, 32.5 °C, and 29.2 °C, respectively. The outlet temperatures of the nanofluid were 30.5 °C, 30.1 °C, 29.1 °C, and 29 °C, respectively.