Numerical analysis of the flow field and improvement heat transfer based on varying dimple parameter configurations in 3D tube

In this work, the the flow field investigation and improvement of heat act using different dimple parameters in 3D tubes were analysis. Stream field and intensity move qualities of dimpled tubes were examined, and the impacts of the different arrangements of dimples including three different distances between dimple rings around the tube 10 mm, 20 mm, and 30mm were researched. The performance evaluation factor (PEF), Various Reynolds numbers: Re=4000-15000, and the standard k-e model were used for different dimple configurations. Results indicate that as the dimple geometrical parameters changed the flow in the pipe as well as changed including velocity and pressure distributions. The value of PEF of the dimpled tubes for the most part changes from PEF=1.15-1.23 in.various cases.