Fluid-dynamic Simulations for Assessment of Dimensioning ‎Methodologies of Pelton Turbine Buckets Considering the Initial ‎Torque Overcoming

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Ceballos Zuluaga Jorge Mario; Isaza Merino Cesar Augusto; Patiño Arcila Iván David; Morales Rojas Andrés David

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Journal Paper

Paper Information

Journal: JOURNAL OF APPLIED AND COMPUTATIONAL MECHANICS Year:2023 | Volume:9 | Issue:4 Page(s): 1036-1048

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Information Journal Paper

Title

Fluid-dynamic Simulations for Assessment of Dimensioning ‎Methodologies of Pelton Turbine Buckets Considering the Initial ‎Torque Overcoming

Author(s)

Ceballos Zuluaga Jorge Mario | Isaza Merino Cesar Augusto | Patiño Arcila Iván David | Morales Rojas Andrés David | Issue Writer Certificate

Keywords

Computational fluid dynamics

Dynamic mesh model

Multiphase flow

Pelton Turbines

Buckets dimensioning methodologies

‎Initial torque‎

Abstract

The growing demand for energy resources highlights the need to optimize traditional energy transformation systems. Pelton-type turbines, which are extensively used in micro-generation systems, can be designed using different methodologies, however, no consensus has been reached on which methodology guarantees greater efficiency. This work aims to compare the fluid-dynamic behavior at the first-time instants of Pelton Turbines for micro-generation dimensioned by three different methodologies, namely, OLADE, Nechleba, and Thake, evaluating their capacity to overcome the initial torque. The results show that OLADE methodology leads to the best fluid-dynamic performance, whereas Nechleba fails to overcome the prescribed torque. In the Thake methodology, the impact of water on the back face of buckets and the formation of reverse pressure gradients can counter the turbine rotation.

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