Projekt

Flow measurements in hydraulic turbines

The goal of the project is to follow the development of flow measurements in hydraulic turbines.

This project will investigate the effects of runner change on the Winter-Kennedy method with the help of numerical simulations for trapezoidal semi-spiral casing. The factors limiting the Winter-Kennedy method with the help of numerical simulations for circular full spiral casing will also be looked into. 

The Winter-Kennedy method is widely used in Sweden. Accurate flow measurements in hydraulic turbines with this method are essential:

  • after a refurbishment to determine the efficiency step-up between an old and a new turbine configuration
  • to asses and optimize the productivity of a machine, e.g., CAM curve determination or continuous measurements

The pressure-time method is less used in Sweden. However, its development will allow

  • an alternative method to determine the efficiency step-up between an old and a new configuration after a refurbishment and complete Winter-Kennedy measurements
  • to assess the efficiency of a machine during transient operation when regulating the grid

Om projektet

Projektledare

Michel Cervantes, LTU

Doktorand

Binaya Baidar, LTU

Publiceringar

B. Baidar, J. Nicolle, B. K. Gandhi, and M. Cervantes, ‘Effects of runner change on the Winter-Kennedy flow measurement method: A numerical study’, Renewable energy, vol. 153, pp. 975–984, 2020.

B. Baidar, J. Nicolle, B. K. Gandhi, and M. Cervantes, ‘Numerical Study of the Winter–Kennedy Flow Measurement Method in Transient Flows’, Energies, vol. 13, no. 6, 2020.

B. Baidar, J. Nicolle, C. Trivedi, and M. Cervantes, ‘Numerical study of the Winter-Kennedy method: a sensitivity analysis’, Journal of Fluids Engineering, vol. 140, no. 5, 2018.

B. Baidar, J. Nicolle, B. K. Gandhi, and M. Cervantes, ‘Numerical study of the Winter-Kennedy method for relative transient flow rate measurement’, IOP Conference Series, vol. 405, no. 1, 2019.

B. Baidar, J. Nicolle, B. K. Gandhi, and M. Cervantes, ‘Sensitivity of the Winter-Kennedy method to inlet and runner blade angle change on a Kaplan turbine’, in IOP Conference Series: Earth and Environmental Science, 2019, vol. 240.

P. Jonsson, G. Dunca, and M. Cervantes, ‘Development of the pressure-time method as a relative method’, in IOP Conference Series: Earth and Environment, 2019, vol. 240.

B. Baidar, ‘A sensitivity analysis of the Winter-Kennedy method’, Licentiate dissertation, Luleå, 2018.

B. Baidar, ‘A numerical investigation of the Winter-Kennedy method with application to axial turbines’, PhD dissertation, Luleå University of Technology, Luleå, 2020.

Tid

juli 2018 - juni 2020