水-アルコール混合系における濃度マランゴニ効果に関する分子論的考察(分子スケール(1),一般講演)

概要

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In this study, the microscopic motion of a thin molecular liquid layer was simulated by using the molecular dynamics method in order to investigate the Marangoni effect due to the spatial gradient in surface tension. The surface tensions of single-component Water and IPA liquids resulted in an evident difference of 50mN/m, while both water and IPA molecules allocated their dipole moment toward the vapor phase at the vapor-liquid interface indicating a preference in the surface structure. Upon the contact of these two components, IPA molecules covered the water surface much shorter than they dissolved in the bulk water. In a system with quasi-steady gradient in IPA concentration, the velocity distribution resulted in a parabolic form indicating the Marangoni effect.
日本流体力学会の論文
2008-09-04