Numerical Investigation of Pump Intake Vortex Mitigation Using Multiple Intakes
摘要
This paper explores a strategy for mitigating the undesired occurrence of pump intake vortex. It is not possible to completely eliminate the formation of free surface vortex. The present paper focuses on reducing its effects through the implementation and evaluation of multiple intakes. The volume of fluid (VOF) approach is adopted for multiphase flows since it involves the interface between two immiscible fluids water and air by calculating the volume fraction of each fluid in each cell of mesh. Numerical results are validated using experimental results, and a comparison is made between scenarios with and without the multiple intakes approach. The analysis encompasses various models, including laminar, Standard k − ω CC, and SST k − ω CC, with their outcomes analysed and validated using experimental results. The numerical validation demonstrates that the laminar case closely matches with the observed results, and as the number of intakes increases the gas core length keeps on reducing which hence decreases the effect of free surface vortex. The study suggests the effectiveness in suppressing the vortex formation by increasing the number of intakes.