论文标题
使用流动诱导的运动，加热通道中的热冷却增强
Thermal Cooling Enhancements in a Heated Channel Using Flow-Induced Motion
论文作者
论文摘要
本文介绍了对刚性圆柱体的四个不同横截面的涡流诱导的冷却的比较研究，即圆形，半圆形，半圆形和三角形的圆形，正方形，半圆形和三角形，有或没有刚性/柔性的夹具板在reynolds数量上，基于液压直径的所有分析。对于柔性板壳，调用了分区方法来解决耦合的流体结构结合问题。模拟显示涡流位置的热边界层厚度的减小，从而改善了努塞尔的数量。此外，薄板的流动诱导的运动显着增加了通道内部的涡度场，从而改善了混合和冷却。据观察，当板与三角形横截面连接到圆柱体上时，板运动振幅是最大的。功率需求分析表明，柔性板可降低泵送通道冷液所需的功率。因此，根据本研究的观察结果，作者建议使用附着在圆柱体上的柔性板进行改善对流冷却。
The paper presents the comparative study of the vortex-induced cooling of a heated channel for the four different cross-sections of the rigid cylinder, i.e., circular, square, semi-circular, and triangular, with or without the rigid/flexible splitter plate at the Reynolds number (based on the hydraulic diameter) of 200. The study presents a comprehensive analysis of the flow and thermal performance for all the cases. For flexible plate cases, a partitioned approach is invoked to solve the coupled fluid-structure-convection problem. The simulations show the reduction in the thermal boundary layer thickness at the locations of the vortices resulting in the improved Nusselt number. Further, the thin plate's flow-induced motion significantly increases the vorticity field inside the channel, resulting in improved mixing and cooling. It is observed that the plate-motion amplitude is maximum when the plate is attached to the cylinder with the triangular cross-section. The power requirement analysis shows that the flexible plate reduces the power required to pump the channel's cold fluid. Thus, based on the observations of the present study, the authors recommend using the flexible plate attached to the cylinder for improved convective cooling.
