Aparna Warrier
Independent Researcher
India
Abstract
Fluid-Structure Interaction (FSI) modeling plays a critical role in the design and analysis of hydraulic turbines used in run-of-river (RoR) hydropower plants. This study investigates the dynamic interplay between fluid flow and structural response in hydraulic turbines, focusing on improving performance, reliability, and structural integrity. Using computational fluid dynamics (CFD) coupled with finite element analysis (FEA), the paper presents a comprehensive FSI modeling approach tailored for RoR turbine environments characterized by variable flow rates and transient hydraulic conditions. The research outlines methodology, simulation setup, and results demonstrating the effectiveness of FSI in predicting stress distribution, vibration modes, and potential failure zones. This study’s insights support design optimization and operational strategies enhancing RoR turbine durability and efficiency.
Keywords
Fluid-Structure Interaction, Hydraulic Turbines, Run-of-River, Computational Fluid Dynamics, Finite Element Analysis, Structural Integrity, Transient Flow, Simulation.
REFERENCES
- Trivedi, C., & Cervantes, M. J. (2017). Fluid-structure interactions in Francis turbines: A perspective review. Renewable and Sustainable Energy Reviews, 68, 87–101. ideas.repec.org
- Trivedi, C., Cervantes, M. J., & Dahlhaug, O. G. (2015). Experimental investigations of a model Francis turbine during shutdown at synchronous speed. Renewable Energy, 83, 828–836. ideas.repec.org
- Jonsson, P. P., Mulu, B. G., & Cervantes, M. J. (2012). Experimental investigation of a Kaplan draft tube – Part II: Off-design conditions. Applied Energy, 94, 71–83. ideas.repec.org
- Louyot, M., Nennemann, B., Monette, C., & Gosselin, F. P. (2019). Modal analysis of a spinning disk in a dense fluid as a model for high head hydraulic turbines. arXiv preprint arXiv:1910.14001. arxiv.org
- Saeed, R. A., Galybin, A. N., Popov, V., & Abdulrahim, N. O. (2013). Modelling of the Francis turbine runner in power stations. Part II: Stress analysis. In Proceedings of the 9th International Conference on Fluid–Structure Interaction (pp. 1–8). Wessex Institute of Technology. witpress.com
- Nava, J. M. F., Gómez, O. D., & Hernández, J. A. R. L. (2006). Flow induced stresses in a Francis runner using ANSYS. In International ANSYS Conference Proceedings (pp. 1–10). researchgate.net
- Farhat, M., Avellan, F., Paquet, F., Lowys, P. Y., & Couston, M. (2002). On-board measurements of pressure and strain fluctuations in a model of low head Francis turbine—Part I: Instrumentation. In 21st IAHR Symposium on Hydraulic Machinery and Systems (pp. 86 572). researchgate.net
- Bjorndal, H., Moltubakk, T., & Aunemo, H. (2001). Flow induced stresses in a medium head Francis runner – Strain gauge measurements in an operating plant and comparison with finite element analysis. In 10th International Meeting of the IAHR Work Group on Behaviour of Hydraulic Machinery (pp. 1–7). researchgate.net
- Čarija, Z., Mrša, Z., & Popov, V. (2003). Complete Francis turbine flow simulation for the whole range of discharges. In 4th International Congress of the Croatian Society of Mechanics (pp. 105–111). researchgate.net
- Schott, B., Ager, C., & Wall, W. A. (2018). Monolithic cut finite element based approaches for fluid–structure interaction. arXiv preprint arXiv:1807.11379. arxiv.org
