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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL VALIDATION OF A MICRO PELTON TURBINE FOR DIFFERENT OPERATIONAL POINTS
Submission Author:
Rafael Cordebela , RJ
Co-Authors:
Rafael Cordebela, Washington Orlando Irrazabal Bohorquez, julio campos
Presenter: Rafael Cordebela
doi://10.26678/ABCM.ENCIT2020.CIT20-0303
Abstract
The aim of this paper was to compare Computational Fluid Dynamics and experimental results for the torque as a function of the rotation speed for a Pelton turbine scaled model. Multiphase flow simulations of free surface, testing the mesh dependence and different operational points in the design condition of the turbine were implemented. The simulations were conducted to validate the torque measurement calculated by the Computational Fluid Dynamics model, doing as much simplifications as possible, due to the axial symmetry of the turbine, to reduce computational costs. Succinct comments regarding the flow in the buckets are also shown in this work. Results discrepancies ranged from 4 to 8% and are larger for higher rotation speeds.
Keywords
Pelton turbine, Computational Fluid Dynamic, multiphase flow, Torque
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