双组分扩散过程Rayleigh-Bénard-Marangoni现象实验研究  

EXPERIMENTAL STUDY ON Rayleigh-Bénard- Marangoni EFFECT IN BINARY DIFFUSION

作　　者：沙勇[1] 成弘[1] 袁希钢[1] 余国琮[1] 孙志发[2] 

机构地区：[1]天津大学化学工程研究所 [2]奥塔戈大学物理系

出　　处：《化工学报》2002年第9期976-979,共4页CIESC Journal

基　　金：国家自然科学基金资助项目 (No .2 0 0 76 0 32 )~~

摘　　要：Laser Schlieren device was established to observe Rayleigh-Bénard-Marangoni effect produced in thick liquid depth by the diffusion of binary liquid mixtures.A recorder and a camera separately recorded dynamic and static convective flow patterns during experiment.According to different signs of Ma number and Ra number,different binary liquid mixtures were selected to investigate the RBM effect induced by different driven mechanism including density gradient or surface tension gradient or combination of both.Qualitative analysis to experiment results was presented.Laser Schlieren device was established to observe Rayleigh-Bénard-Marangoni effect produced in thick liquid depth by the diffusion of binary liquid mixtures.A recorder and a camera separately recorded dynamic and static convective flow patterns during experiment.According to different signs of Ma number and Ra number,different binary liquid mixtures were selected to investigate the RBM effect induced by different driven mechanism including density gradient or surface tension gradient or combination of both.Qualitative analysis to experiment results was presented.

关 键 词：实验研究 Rayleigh-Benard-Marangoni现象 双组分扩散 激光 纹影仪 传质过程 

分 类 号：TQ021.4[化学工程]