The large deformation of flow-induced vibration (FIV) by flexible fins played an important role in destroying the thermal boundary layer and improving the heat transfer enhancement. A blunt-head cylindrical heat transfer enhancement device based on FIV heat transfer enhancement was proposed. The heat transfer performance of new devices with different configurations was explored by the two-way fluid–structure interaction (FSI) method. Effects of Reynolds number () and angle () on heat transfer performance were studied. Results showed that the Nusselt number () of the blunt cylinder increases by 2.49% compared with that of the bare cylinder. The heat transfer effect was obviously improved when the flexible fin was installed. Compared with the single blunt-headed cylinder () and the rigid fin (), the was increased by 16.86 and 5.82%, respectively, when the flexible fin was installed. In the calculation range, the increased with the increase of and . When and , the maximum of the system of blunt-headed cylinder with fin was 15.58, which was 37.63 and 9.64% higher than the at and , respectively. This work provides a theoretical basis for the application of FIV in the field of heat transfer enhancement.
Heat Transfer Enhancement Characteristics of Multiconfiguration Blunt-Headed Cylinder by Flow-Induced Vibration
01.10.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch