Numerical Simulation of Heat Transfer in A Vibrating Body Strengthened Tube

To improve the heat transfer efficiency of the heat exchanger, we studied adding a moving vibrating body inside the pipeline to enhance the heat transfer efficiency. Based on the immersed boundary method and the application of OpenFOAM, we focused on enhancing heat transfer inside pipes with vibrating bodies, analyzed the forced convection heat transfer mechanism under fluid structure coupling, and further explored the influence of various parameter changes on the enhanced heat transfer performance inside pipes. Results show that the presence of vibrating body does indeed improve the heat transfer efficiency inside the tube in a degree, and different parameters can change this value. The motion of the vibrating body will change the motion path and flow velocity of the fluid, thereby increasing the average Nusselt number on the wall surface; The temperature difference between the wall of the pipeline and the fluid can greatly affect this heat transfer efficiency. Although the change in the average Nusselt number of the wall caused by the change in the shape of the vibrating body is not significant, it may be due to imperfect modeling in this simulation.