Abstract
In the present study we observed Marangoni convection at the gas liquid interface of alcohol aqueous solution. It was driven by the surface tension variation caused by temperature gradient along the bubble surface. Numerical simulation was performed about pure water and butanol aqueous solution to compare with the result of experiment. It was found from this study that the direction of Marangoni convection in using butanol aqueous solution (7.15wt%) was toward heated surface. Moreover, the tendency of the experiment and the numerical simulation was the same in terms of flow pattern and its temperature dependence.
