Effect of a wake on drag and deformation of liquid column at high Weber numbers

Abstract

The objective of this study is to clarify the effect of a wake on liquid column drag and deformation for a high-Weber-number (We) flow. A simulation was performed for a liquid column with a high We behind a shock wave, using a ghost fluid method as a two-phase flow solver. The simulated We were 500, 1000, 2000, 3000, and 4000. Relatively large oscillation of the drag coefficients was observed for We = 500 and 1000. This feature of the drag coefficients was possibly caused by varying pressure on the downstream interface. The pressure variation is derived from the wake. In addition, it was suggested that such varying pressures could contribute to the flattening of the liquid column.

Keywords

• liquid column deformation
• high weber number
• wake
• spray combustion