汽油与酒精自动交换的周期性分层振荡的实验研究  

Experimental study on periodic stratified oscillation of automatic exchange between gasoline and alcohol

作　　者：梁法库[1] 李浩[1] 梁帅[2] 蔡成江[1] 郝斌政[1] 卢俊国[1] 毛燕婷[1] 

机构地区：[1]齐齐哈尔大学理学院物理系,黑龙江齐齐哈尔161006 [2]东北林业大学土木工程学院,黑龙江哈尔滨150040

出　　处：《大学物理》2012年第3期35-39,共5页College Physics

基　　金：黑龙江省教育厅科学技术研究项日(11521309);齐齐哈尔大学教育科研重点项目(2009004)资助

摘　　要：探究了汽油与酒精之间周期性振荡交换,实验得知汽油与酒精之间能产生周期性振荡现象,且内外筒溶液具有明显的分层现象,得到振荡周期与孔长和孔径关系为T∝L1/d4的实验结论;内筒初始酒精液面高度几乎不影响振荡周期,定性研究内筒酒精液面高度变化与孔长、周期次序的关系,最后给出在两不稳定平衡点间内液面位置变化量的表达式.The periodical oscillation and exchange between gasoline and alcohol are explored. It is found from experiment that periodical oscillation can be generated between gasoline and alcohol, and obvious stratification is found in both inner and outer containers. We get the experimental conclusion that oscillation cycle time is proportional to the length of capillary and inversely proportional to the inner diameter of capillary to the power of 4（ T L1/d4）. However, the initial level of alcohol in inner container almost does not affect the oscillation cycle time. We also explore the relation between the change of the level of alcohol in inner container and the change of the length of Capillary and cycle order. Finally, the expression for the change of the level of alcohol in inner container between two unstable equilibrium points is given.

关 键 词：周期性振荡 交换 振荡周期 汽油和酒精间振荡 分层 

分 类 号：O351[理学—流体力学]