表面活性剂溶液最大减阻率及其尺度放大  

Maximum Drag Reduction and Scale up of Surfactant Solution

作　　者：马宁[1] 徐娜[1] 魏进家[1] 龙延[1] 黄崇海[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《工程热物理学报》2013年第9期1675-1678,共4页Journal of Engineering Thermophysics

基　　金：国家杰出青年科学基金(No.51225601);国家自然科学基金项目(No.51076124);高等学校博士学科点专项科研基金项目(No.20090201110002)

摘　　要：在30mm×375mm二维有机玻璃通道中研究CTAC/NaSal表面活性剂湍流减阻特性,并用Hoyt尺度放大方法对所测数据在不同管径条件下进行关联拟合。研究表明,表面活性剂溶液发生湍流减阻的临界温度和临界雷诺数均随其质量分数的增大而增大。质量比为1:1的CTAC/NaSal溶液,最大无关减阻率约为60%。在完全减阻区域内,Hoyt尺度放大方法对于CTAC/NaSal表面活性剂溶液具有很好的放大效果。Turbulent drag reducing characteristics of CTAC/NaSal aqueous solution （CTAC had same mass concentration with NaSal.） were investigated in a two-dimensional channel of 30 mm height and 375 mm width, which was made of transparent acrylic resin. The measured drag reduction data were scaled up by using Hoyt＇s scaling method and were compared with other reported drag reduction data for different channel sizes. It could be concluded that both the critical temperature and critical Reynolds number at which turbulent drag reduction of surfactant solution occurred increased with concentration. There was a maximum drag-reduction about 60% for the measured CTAC/NaSal solutions. The Hoyt＇s scale-up method correlated well the experimental data for different chan- nel heights when the SIS （shearing induced structure） was established very well in surfactant solutions.

关 键 词：表面活性剂溶液 湍流减阻 Hoyt尺度放大法 最大无关减阻 

分 类 号：O647.2[理学—物理化学]