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Numerical Study on Flow Characteristics in a Francis Turbine during Load Rejection
2019
Energies
Labyrinth seals are not usually included in the numerical models of hydraulic machinery to simplify the geometric modeling, and thereby reduce the calculation burden. However, this simplification affects the numerical results, especially in the load rejection process, because disc friction losses, volume losses, and pressure fluctuations in the seal ring (SR) clearance passage are neglected. This paper addresses the issue by considering all of the geometrical details of labyrinth seals when
doi:10.3390/en12040716
fatcat:kb27urkuubdktgfm636w7mm55i