Analysis of Fluid Flow Characteristic with Different Temperature and Different Methods in T-junction Pipe

Thermal fatigue is a material deterioration caused by temperature. Thermal fatigue or commonly referred to as Thermal Fatigue is a potential risk in the piping system, it can occur in the mixing flow at the T-junction. Thermal fatigue depends on the magnitude of the frequency, location, temperature attenuation, and the ratio of the angular flow velocity of the branch pipe to the main pipe. T-joint pipe is the most common piping system structure and is widely used in industrial fields such as petrochemical, marine, nuclear and so on. The research method used is experimentation and simulation using the Ansys student 2021 software with the Realizable method. The results showed that the experimental and simulation results were different but had a graphical tendency. The experimental results showed that the highest temperature was found at a speed of 0.8 m/s at the inlet hot was 35°C, while the simulation results showed a flow velocity of 0.8 m/s at the inlet hot reaches a temperature of 41°C at the right side of the thermocouple 250mm from the lip of the outlet. Flow characteristics with maximum variable temperature distribution, resulting from the ratio of the difference in velocity of cold inlet flow of 0.2 m/s with a diameter of 56mm and hot inlet flow of 0.8 m/s with a pipe diameter of 19mm.