Journal of Colloid and Interface Science, Vol.239, No.2, 509-516, 2001
Surface-tension-driven flows in a thin layer of a water-n-heptanol solution
A model for Marangoni flows that we observed on plane free surfaces of thin layers of aqueous fatty alcohol solutions is developed by considering evaporation-condensation of alcohol. The velocities of surface-tension-driven flows caused by gradients in temperature and in concentration are evaluated for water-n-heptanol solutions, which have a minimum of the equilibrium surface tension near 40 degreesC. Theoretical results are discussed on the basis of experimental observations.