摘要
对3种不同管径的实验管段进行实验,研究稳态工况下扰动和热-冷流体温度差对密度锁内热-冷流体分界面位置的影响.结果表明,随着扰动的增大,扰动产生的湍流作用逐渐增强,从而使稳定的分界面向下移动;而温度差的增大,使热流体向冷流体的传热能力增强,导致分界面的位置下降.另外,对不同管径的实验管段的研究表明,在密度锁内布置一个蜂窝结构可有效地抑制扰动作用,使其内部的分界面更稳定.
Under steady state condition, an experimental study on the influence of disturbance and temperature difference between hot and cold fluid on the location of interface was done in three different experimental pipes. The results showed that the effect of turbulence caused by disturbance increased with the enhancement of disturbance so that the location of stable interface between hot and cold liquid declined. And the heat transfer from hot liquid to cold liquid increased with the raise of temperature difference, which resulted in decline of the interface. In addition, the results of study on different experimental pipes indicated that a honeycomb structure in the density lock could efficiently curb the disturbance, which benefited the stability of the interface.
出处
《应用科技》
CAS
2009年第4期57-60,共4页
Applied Science and Technology
基金
国家自然科学基金资助项目(50776022)
关键词
密度锁
分界面
温度场
影响因素
density lock
interface
temperature field
influencing factors
