Numerical Simulation Study on Turbulence in T-junction Pipelines with Different Outlet Angles
T-junction pipelines, known for their simple structure, ease of installation and disassembly, and cost-effectiveness, are widely used in water conveyance systems. This paper uses FLUENT software to conduct a numerical simulation study of the fluid dynamics inside three-dimensional T-junction pipelines with different outlet angles. It analyzes the changes in velocity fields, pressure fields, and streamline distribution within the pipeline under various outlet angles. The findings include: the fluid flow speed, pressure, and streamlines in the pipeline are symmetrically and uniformly distributed;as the angle of the outlet pipe section increases, the fluid' s velocity inside the pipeline gradually increases while the pressure decreases. At the junction of the inlet and outlet pipe sections, a vortex zone is formed, and the larger the angle, the more complex the changes in velocity, pressure, and streamlines within this zone, with the negative pressure in this area reaching its maximum. Hence, structural optimization of the junction between the inlet and outlet sections of the T-junction pipeline can reduce this negative pressure and minimize cavitation damage to the pipeline, providing a reliable theoretical basis for rational pipeline design.
万方数据
维普
