Nonlinear Fluid Flow/Surfactant/Interface Dynamics
DELAWARE UNIV NEWARK DEPT OF CHEMICAL ENGINEERING
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The goal of this research is the development of a theoretical quantitative understanding of the dynamics of high Reynolds number free-surface flows under large free-surface deformations in the presence of one or multiple surfactants. The long-term goal of this research is to understand the effect of the surfactants on 1 turbulence, 2 waves, 3 slick formation, and 4 mass transfer through the free surface. The objectives of the proposed research are several. First, we are aiming to develop an algorithm for direct numerical simulation of free-surface flows with surfactants. The scheme will be capable of simulating two-dimensional flows with high Reynolds numbers, accommodating nonlinear free-surface deformation and the presence of one or two interacting surfactants. Second, we want to use this tool to evaluate alternative approaches in modeling surfactant behavior. In particular, through comparison with experimental data, we want to investigate the extent of microscopic detail needed to be present in the surfactant model in order to enable an at least qualitative description of the dynamic surfactant behavior. We want to focus on improving the understanding of the flowfree-surface surfactant interactions through a direct simulation of the nonlinear interactions of a surfactant-contaminated free surface with a vortex with or without the presence of waves.
- Fluid Mechanics