摘要
本文提出了利用管外流体诱导振动实现强化传热的新方法．采用了一种新的传热元件－弹性管束，它对管外流体流动具有良好的振动响应特性．提出了正置三角柱脉动流发生装置，该装置可诱导起弹性管束一定频率的周期性振动，并对强化传热具有显著的促进作用．在恒热流条件下，对管外水流诱导振动强化对流换热规律进行了试验研究，得到了管外对流换热的准则方程式．
A new method of the heat transfer enhancement by water crossflow induced vibration was put forward. A new heat transfer element called elastic tube bundles has been designed which has excellent response characteristics of vibration to the crossflow. A placed triangular pole device of producing pulsating flow was adopted. This device can induce vibration of a fixed scope of frequencies and has profound influence on heat transfer augmentation. On the fix wall heat flux boundary condition, experiments were carried out on the heat transfer characteristics of elastic tube bundles augmented by flow-induced vibration in water crossflow. The non-dimensional equations of outside heat transfer coefficient for the elastic tube bundles were obtained.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2002年第1期63-66,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No 50076022)
