Influence of liquid physical properties on liquid film flow characteristics of uneven wall

Mei Liu, Songling Wang, Zhengren Wu

School of energy power and mechanical engineering, North China Electric Power University Baoding, China, 071003

Two-dimensional model of inclined uneven wall was established based on VOF method to numerically simulate the flow characteristics of liquid film. The impact of physical property on the flow field is studied. Water, acetone and ethyl alcohol were selected as the medium. The results indicate that liquid film thickness increases with liquid viscosity, while the phase difference between free surface and the uneven wall has no change. The continuous uniform film is easy to form while considering the surface tension. Furthermore, the phase difference and liquid film thickness both increase when taking the surface tension into account.