Physical and numerical modelling of biomimetic approaches of natural hydrophobic surfaces

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2009,（4）
• 页码范围: 541-548
• 页数: 8页
• 语种: 英文
• DOI: 10.1007/s11434-009-0015-8

摘要

Physical and numerical models of the hydrophobic and self-cleaning characteristics of an object sur-face are developed, and a micro/meso scope numerical approach and simulation based on the lattice Boltzmann method (LBM) is achieved. The modelling focuses on surface tension dominated behaviour of water droplets in air spreading on hydrophilic surface with hydrophobic strips of different sizes and contact angles under different physical and interracial conditions. Applying the LBM model, the drop-lets behaviours on heterogeneous partial wetting surfaces are studied and simulated. In the simula-tions, the interactions between the fluid-fluid interface and the partial wetting wall are typically con-sidered; the phenomena of droplets spreading and breaking up, as well as the effect of hydrophobic strips on the surface wettability or self-cleaning characteristics are simulated and studied.