Dynamics of a Spherical Microcavity in a Polymeric Liquid

被引：12
作者：
Bazilevskii, A. V.
Meier, D. D.
Rozhkov, A. N.
机构：
来源：
FLUID DYNAMICS | 2003年 / 38卷 / 03期
关键词：
microcavity; bubble; cavitation; collapse; growth; polymer solution;
D O I：
10.1023/A:1025171704005
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The formation and collapse of a vapor microcavity (microbubble) in aqueous solutions of polyacrylamide with a molecular mass of 0.5-11 million and concentration of 0-6% is studied experimentally. A microbubble less than 100 mu m in size is formed as a result of local superheating of the liquid by a microheater. Using stroboscopic visualization, the microbubble evolution is investigated in detail. At high polymer concentrations and low molecular masses, a slowing of bubble collapse is noted. On the range of parameters considered, no radical change in microbubble dynamics due to the action of polymeric additives was observed.
引用
收藏
页码：351 / 362
页数：12
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