【摘要】 Don Pettit是美国NASA的资深宇航员,2002年11月至2003年5月,在国际空间站工作期间,进行了一系列名为Saturday Morning Science的微重力实验.Don Pettit实验揭示了微重力下一些令人惊奇的现象,涉及流体力学、气泡动力学、晶体生长以及运动学的诸多基础问题,是能够获得的国际空间站为数不多的微重力实验资料,具有重要研究意义.实验包括14组流体实验和7组力学实验,而流体实验又大致分为水膜实验和水球实验,包括大尺寸水膜制备、扩散和对流、Marangoni对流、薄膜结晶、水球/气泡旋转等.本文对Don Pettit实验的流体部分进行了介绍,并对其中的Marangoni对流和薄膜结晶实验现象进行了解析.更多还原

【Abstract】 The microgravity experiments"Saturday Morning Science"carried by Don Pettit,se- nior science astronaut,in 2003 on International Space Station was introduced in the present paper. The experiments video which has become available on NASA website demonstrates a variety of surprising phenomena which are highly related to the basic sciences in fluid convection,mechanics, crystallography,kinematics and so on.The experiments include 14 fluid experiments and 7 me- chanical experiments.Only fluid experiments were narrated in this paper,particularly"Marangoni convection"and"thin film crystallizer"were compared with their counterparts on ground and the effects of microgravity on relevant phenomena were analyzed.更多还原