CAJ | 학술논문

通过纹影光路，捕捉到低表面张力溶质从水中解吸导致的气液界面失稳过程及后续的对流结构图像。乙醇、异丙醇和丙酮水溶液中的现象相似：传质开始进行时，界面出现一个迅速变大的湍动区，湍动区扩张的同时，其边缘区域产生很多圆形的小胞，这些小胞逐渐演化成多边形，短暂的界面失稳过程之后，界面对流结构逐步发展为环形；但在乙酸乙酯体系中，界面对流结构一直都是团状的，而且湍动强度更为剧烈。结果表明，界面对流结构特点和剧烈程度取决于实验条件和体系的物理性质。
통과문영광로，포착도저표면장력용질종수중해흡도치적기액계면실은과정급후속적대류결구도상。을순、이병순화병동수용액중적현상상사：전질개시진행시，계면출현일개신속변대적단동구，단동구확장적동시，기변연구역산생흔다원형적소포，저사소포축점연화성다변형，단잠적계면실은과정지후，계면대류결구축보발전위배형；단재을산을지체계중，계면대류결구일직도시단상적，이차단동강도경위극렬。결과표명，계면대류결구특점화극렬정도취결우실험조건화체계적물이성질。
The schlieren system was used to capture the onset of transition to turbulence and the interfacial turbulence in desorbing surface of tension-lowering solutes from aqueous solution. Convective structure in ethanol-water solution, isopropanol-water solution and acetone-water solution was alike. When the mass transfer process started, a rapidly growing turbulent region was observed on the surface. Several small round cells appeared on the edge of the expanding turbulent region. These small cells gradually developed into polygon structures as reported by many investigators. After the short instability process, the structures changed into ring-like shapes. In ethyl acetate-water solution, the structures remained clustered shape, and turbulence intensity was stronger. Structural features and turbulence intensity of interfacial convection depended on experimental operating conditions and physical properties of the system.