科研之友
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摘要
A new chaotic duct is shown to enhance heat transfer at lower Reynolds numbers. The structure can be used as a heat transfer enhancement duct or as a flow channel in compact heat exchangers. The characteristics of the fluid flow and heat transfer in the duct were studied numerically, and the accuracy of the numerical calculations was verified experimentally. An orthogonal experiment was designed to optimize the geometric parameters of the duct. The mechanism of heat transfer enhancement in the duct was analyzed. Chaotic advection occurs in the duct at lower Reynolds numbers. By means of chaotic advection, fluid mixing is enhanced and heat exchange is increased between the fluid in the center and that near the duct boundary. The fluid temperature is distributed more uniformly at the cross-sections of the duct, and heat transfer is apparently enhanced.
- 出版日期2016-3
- 单位郑州大学
