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 ( R e ) and angle ( U ) on heat transfer performance were studied. Results showed that the Nusselt number ( Nu ) 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 ( N u = 8.72 ) and the rigid fin ( N u = 9.63 ), the Nu was increased by 16.86 and 5.82%, respectively, when the flexible fin was installed. In the calculation range, the Nu increased with the increase of R e and E . When R e = 1500 and Φ = 180 ° , the maximum Nu of the system of blunt-headed cylinder with fin was 15.58, which was 37.63 and 9.64% higher than the Nu at Φ = 0 ° and Φ = 90 ° , respectively. This work provides a theoretical basis for the application of FIV in the field of heat transfer enhancement.


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    Title :

    Heat Transfer Enhancement Characteristics of Multiconfiguration Blunt-Headed Cylinder by Flow-Induced Vibration


    Contributors:
    Zhang, Xiaoya (author) / Duan, Derong (author) / Wang, Muhao (author) / Gao, Changqing (author) / Yang, Xuefeng (author) / Zhang, Hui (author)


    Publication date :

    2024-10-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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