本文建立了一个在常重力及微重力情况下绕汽柱热毛细对流的数学模型，并采用有限差分法来积分非稳态动量方程和能量方程，得到了不同参数下热毛细对流的数值解。通过数值模拟，得到了不同参数下热毛细对流的速度矢量场，了解了有关无量纲参数对热毛细对流的影响规律。得出结论：热毛细对流不仅在微重力条件下存在，即使在重力场中，在特定情况下也是不能忽略的
A study on the Marangoni convection induced by temperaturegradient is carried out in the present paper, as a frontier researchsubject being paid wide attention with the opening of the space microgravityenvironment. A mathematical model of the Marangoni convection around avapor stem under microgravity and earthgravity conditions is set up and afinite difference technique is employed to numerically integrate theunsteady momentum and heat transfer equations. A numerical solution of theMarangoni convection under different parameters is obtained. The effect ofsome dimensionless physical parameters onMarangoni convection is emphasized by the aid of numerical simulation.The results show that under microgravity the velocityfields are strongly influenced by Marangoni convection. As Marangoni numberincreases, the convection is gradually enhanced.When the direction of buoyancy induced convection is parallel to that ofMarangoni convection they will enhance each other. Onthe contrary, they will weaken each other
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