Visualization of flow field of a liquid ejector pump using embedded LES methodology

The understanding of entrainment and mixing phenomenon in the ejector pump is of pivotal importance for designing and performance estimation. In this paper, the existence of turbulent vortical structures due to Kelvin–Helmholtz instability at the free surface between the motive and the entrained fluids streams is visualized using Embedded LES methodology. The efficacy of Embedded LES for simulation of complex flow field of ejector pump is evaluated using ANSYS Fluent ® 15.0. The enhanced mixing and entrainment process due to breaking down of larger eddies into smaller ones as a consequence of Vortex Stretching phenomenon is captured in this study. Moreover, the flow field characteristics of ejector pump like pressure and velocity fields are also analyzed and the results are validated against experimental results. Graphical abstract