Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Francis modeling over generating units applying advanced fluid dynamics methods
Submission Author:
Leandro Jose Lemes Stival , PR
Co-Authors:
Leandro Jose Lemes Stival, João Marcelo Vedovotto, Aldemir Ap Cavalini Jr, Freddy Portillo Morales, Leonardo Sicchieri
Presenter: Leandro Jose Lemes Stival
doi://10.26678/ABCM.DINAME2023.DIN2023-0112
Abstract
The use of Large Eddy Simulation o (LES) has increased for rotor simulations due to the increased computational power available, where mathematical formulation over a generating unit virtual machine are possible nowadays. The numerical framework used in the simulations performs LES under a Cartesian block-structured mesh that is dynamically refined via an adaptive mesh refinement (AMR) to increase accuracy and reduce computational costs, even with an initial mesh configuration with approximately 13 million control volumes. Preliminary analyses demonstrate that the LES-IB methodology is capable of simulating the interaction within the Francis turbine and flow structures, and well capturing the blade’s passage frequency.
Keywords
Large Eddy Simulation, Francis Turbine, Immersed Boundary Method, Adaptive mesh refinement
