レベルセット法とVOF法の界面捕獲性能の比較

抄録

Level set methods and volume of fluid (VOF) methods are popular for computation of immiscible-fluid flows. Here the ACLS (accurate conservative level set) method, a level set variant, and the CICSAM (compressive interface capturing scheme for arbitrary meshes) method, a VOF variant, are applied to the Zalesak’s problem (solid body rotation of a slotted disk) to clarify the pros and cons of these methods. The ACLS combined with a high-order scheme shows a remarkable ability for preserving both the shape and volume of the disk. While the CICSAM presents a severe restriction on the time increment, the impact of the difficulty can be relieved by introducing a so-called sub-stepping strategy in practical applications and hence it is also a useful methodology due to the simplicity.