Numerical Study on Performance Characteristics of Draft Tube of Mixed Flow Hydraulic Turbine

Authors

  • Ruchi Khare Pursuing research and consultancy in hydraulic turbines
  • Vishnu Prasad Consultancy services and conducting research in hydraulic turbines and water resources

DOI:

https://doi.org/10.3126/hn.v10i0.7103

Keywords:

Draft tube, computational fluid dynamics, whirl, efficiency, energy recovery

Abstract

Draft tube is an important component of the hydraulic reaction turbine and affects the overall performance of turbine to a large extent. The flow inside the draft tube is complex because of the whirling flow coming out of runner and its diffusion along the draft tube. The kinetic energy coming out of runner is recovered in draft tube and part of recovery meets the losses. In the present work, the computational fluid dynamics (CFD) has been used for flow simulation in complete mixed flow Francis turbine for performance analysis for energy recovery, losses and flow pattern in an elbow draft tube used in Francis turbine at different operating conditions. The overall performance of the turbine at some typical operating regimes is validated with the experimental results and found to be in close comparison.

DOI: http://dx.doi.org/10.3126/hn.v10i0.7103

Hydro Nepal Vol.10 January 2012 48-52

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Published

2012-12-05

How to Cite

Khare, R., & Prasad, V. (2012). Numerical Study on Performance Characteristics of Draft Tube of Mixed Flow Hydraulic Turbine. Hydro Nepal: Journal of Water, Energy and Environment, 10, 48–52. https://doi.org/10.3126/hn.v10i0.7103

Issue

Vol. 10 (2012)

Section

Articles

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The copyright of the articles and papers published is held by HYDRO Nepal Journal.

The views and interpretation in this journal are those of author(s), and HYDRO Nepal does not bear any responsibility for the views expressed by authors in the journal.