摘要
基于分形理论简述了科赫边界模型,采用数值模拟的方法分析了稳定流下科赫边界模型(i=1)温度场、速度场和压力场的分布特点,并与振荡流下科赫边界模型的流动换热情况做对比分析。表明:在不同入口速度的工况下,K1模型的流场呈现流道中间温度低、速度大、压力高,流道边缘温度高、速度小、压力低的现象,且振荡流具备强化换热能力。
Based on the fractal theory, the Koch boundary model is briefly described. The numerical simulation method is used to analyze the distribution characteristics of the temperature field, velocity field and pressure field in the Koch boundary model(i=1) under steady flow, and the Koch boundary model under the oscillating flow. The flow heat transfer situation was compared and analyzed. It shows that under different inlet velocities, the flow field of K1 model presents the phenomenon of low temperature, high velocity and high pressure in the middte of the flow channel,high temperature of low velocity and low pressure at the edge of the flow channel, and the oscillating flow has enhanced heat transfer ability.
作者
王晓倩
刘益才
毕麟
武曈
Wang Xiaoqian;Liu Yicai;Bi lin;Wu Tong(Institute of Refrigeration and Cryogenics,Central South University,Changsha 410083,China)
出处
《低温工程》
CAS
CSCD
北大核心
2019年第3期67-72,共6页
Cryogenics
基金
国家自然科学基金资助项目(51776226)
中南大学研究生自主探索创新项目资金资助(2018zzts491)
关键词
科赫边界模型
流场
振荡流
强化换热
Koch boundary model
flow field
oscillating flow
enhanced heat transfer
作者简介
王晓倩,女,25岁,硕士研究生.
