LAPSE:2021.0393
Published Article
LAPSE:2021.0393
A CFD-Based Shape Design Optimization Process of Fixed Flow Passages in a Francis Hydro Turbine
May 24, 2021
In recent times, optimization began to be popular in the turbomachinery field. The development of computational fluid dynamics (CFD) analysis and optimization technology provides the opportunity to maximize the performance of hydro turbines. The optimization techniques are focused mainly on the rotating components (runner and guide vane) of the hydro turbines. Meanwhile, fixed flow passages (stay vane, casing, and draft tube) are essential parts for the proper flow uniformity in the hydro turbines. The suppression of flow instabilities in the fixed flow passages is an inevitable process to ensure the power plant safety by the reduction of vortex-induced vibration and pressure pulsation in the hydro turbines. In this study, a CFD-based shape design optimization process is proposed with response surface methodology (RSM) to improve the flow uniformity in the fixed flow passages of a Francis hydro turbine model. The internal flow behaviors were compared between the initial and optimal shapes of the stay vane, casing, and the draft tube with J-Groove. The optimal shape design process for the fixed flow passages proved its remarkable effects on the improvement of flow uniformity in the Francis hydro turbine.
Keywords
Computational Fluid Dynamics, fixed flow passage, flow uniformity, Francis turbine, shape optimization
Suggested Citation
Shrestha U, Choi YD. A CFD-Based Shape Design Optimization Process of Fixed Flow Passages in a Francis Hydro Turbine. (2021). LAPSE:2021.0393
Author Affiliations
Shrestha U: Graduate School of Mechanical Engineering, Mokpo National University, Muan 58554, Korea [ORCID]
Choi YD: Department of Mechanical Engineering, Institute of New and Renewable Energy Technology Research, Mokpo National University, Muan 58554, Korea [ORCID]
Journal Name
Processes
Volume
8
Issue
11
Article Number
E1392
Year
2020
Publication Date
2020-10-31
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr8111392, Publication Type: Journal Article
Record Map
Published Article

LAPSE:2021.0393
This Record
External Link

doi:10.3390/pr8111392
Publisher Version
Download
Files
[Download 1v1.pdf] (8.8 MB)
May 24, 2021
Main Article
License
CC BY 4.0
Meta
Record Statistics
Record Views
374
Version History
[v1] (Original Submission)
May 24, 2021
 
Verified by curator on
May 24, 2021
This Version Number
v1
Citations
Most Recent
This Version
URL Here
https://psecommunity.org/LAPSE:2021.0393
 
Original Submitter
Calvin Tsay
Links to Related Works
Directly Related to This Work
Publisher Version