【摘要】 自然对流是由非保守体积力驱动的流体流动,这种体积力可以是重力、离心力以及电磁场力等;通过外加梯度磁场来影响流体的流动,产生强化换热效果的方法是一种新型的强化技术．本文利用永磁体产生0．3 g左右的加速度,采用马赫干涉仪对封闭方腔内空气的热磁对流的强化换热现象进行了实验研究,得到了温度场的干涉图像,并与理论模拟结果进行了比较,发现磁场对空气的自然对流换热有一定的强化作用．更多还原

【Abstract】 Natural convection is induced by non-conservative body force, which can be gravity, centrifugal or magnetic force; and enhancement by applying magnetic fields is a new technology in heat transfer. In this article, influence of a magnet with about 0.3 g magnetic acceleration to the convection in an enclosed rectangle cavity is studied using M-Z interferometer, interference images of temperature field is achieved, and compared with numerical simulation, it is found that magnetic field can enhance the convection indeed.更多还原