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Hydraulic System Simulation and Hydro Turbines for Pumped Storage and Hydroelectricity

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "D: Energy Storage and Application".

Deadline for manuscript submissions: 25 June 2026 | Viewed by 1007

Special Issue Editors


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Guest Editor
Department of Industrial Engineering, University of Padova, 35131 Padova, Italy
Interests: hydraulic turbines; CFD; instabilities; design; optimization; hybridization; pump-turbines
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Industrial Engineering, University of Padova, 35131 Padova, Italy
Interests: hydropower; hydraulic turbine; pumped hydro storage (PHS); pump-turbine; virtual power plants (VPPS); renewable energy systems; energy storage; hydro-mechanical systems; turbomachinery; computational fluid dynamics (CFD)
Special Issues, Collections and Topics in MDPI journals

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Guest Editor Assistant
Department of Industrial Engineering, University of Padova, Padua, Italy
Interests: hydraulic machines; design optimization; CFD; unstable behavior; flow induced vibrations

E-Mail Website
Guest Editor Assistant
Department of Industrial Engineering, University of Padova, Padua, Italy
Interests: hydraulic Machines; CFD simulations; thermal simulations; multiphase flows; cavitation; sediments erosion

Special Issue Information

Dear Colleagues,

Hydropower plays a pivotal role in supporting the global energy transition, offering reliable and sustainable solutions for integrating renewable energy sources. As energy grids evolve to accommodate increasing levels of intermittency from wind and solar power, flexibility in hydroelectric plants and pumped hydro energy storage systems (PHESs) has become more critical than ever. Modern hydropower facilities must operate across a broader range of conditions, often requiring innovative approaches to address challenges such as hydrodynamic instability, transient events, vibrations, and deep off-design operation. These challenges, coupled with advancements in hydraulic design and power plant operational strategies, underscore the need for a deeper understanding of turbine behavior and system dynamics.

This Special Issue aims to present and disseminate the most recent advances in the hydropower field, focusing on the stability and reliability of both conventional and storage hydropower plants as well as on their hybridization with other generation/storage technologies. Topics of interest include numerical and experimental approaches for turbine analysis, innovative design methodologies, and solutions for improving plant performance. By exploring these themes, this Special Issue aims to advance the state of the art in hydropower technology and enhance the role of hydroelectric systems in modern, flexible energy grids.

Topics of interest for this Special Issue include, but are not limited to, the following:

  • All aspects related to the design and optimization of hydraulic turbines and pump turbines;
  • Transient behavior of hydraulic systems and control mechanisms;
  • Hydrodynamic stability of reversible pump turbines under partial load and off-design operation;
  • Vibration analysis and mitigation strategies in hydraulic turbines;
  • Variable speed generation technologies and their application in hydroelectric systems;
  • Advanced numerical simulations and experimental validation for turbine performance;
  • Innovations in the monitoring and control of hydropower systems;
  • Analysis of the impact of climate change on hydraulic system operation;
  • Modeling of wear and tear in hydraulic component operations.

Dr. Giovanna Cavazzini
Dr. Alberto Benato
Guest Editors

Dr. Giacomo Zanetti
Dr. Francesco Nascimben
Guest Editor Assistants

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • hydropower
  • CFD
  • flexibility
  • hybridization
  • optimization
  • design
  • reliability

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Published Papers (1 paper)

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Research

19 pages, 3395 KB  
Article
Design of a Booster Pump for Reversible Pump-Turbine in Retrofitted Hydropower Plants
by Pawan Lal Bijukchhe and Chirag Trivedi
Energies 2026, 19(8), 1865; https://doi.org/10.3390/en19081865 - 10 Apr 2026
Viewed by 497
Abstract
Upgrading existing hydropower plants into pump storage using pump-turbines is an economical approach to increasing energy storage capacity. Installing an additional pump at the pump-turbine outlet can improve cavitation performance and reduce submergence requirements. The present work proposes a methodology for designing an [...] Read more.
Upgrading existing hydropower plants into pump storage using pump-turbines is an economical approach to increasing energy storage capacity. Installing an additional pump at the pump-turbine outlet can improve cavitation performance and reduce submergence requirements. The present work proposes a methodology for designing an axial flow pump for such retrofitting applications. A classical method available in the literature was used for establishing the global parameters and boundary conditions of the pump design. The method was automated using a Python 3.13 script to handle a wide range of design parameters. The design output was verified with five different cases covering a wide operational range, from low to high specific speed axial pumps. The results met the required performance criteria, with deviations in head prediction ranging from 0.28 to 1.70 m for most cases. The estimated maximum error was 20% for the mid-range of specific speeds, and the largest deviations were observed for the extreme design conditions. These deviations under extreme specific speeds can be attributed to the limitation of the underlying empirical correlations, which are primarily developed for a typical axial pump. Therefore, further refinement or robust optimization is necessary for reliable application under such extreme conditions. Overall, the verification clearly demonstrated the potential to produce geometrically consistent and hydraulically reasonable designs. The adapted design approach provides good confidence and will provide baseline designs for the booster pump in retrofitted hydropower plants. Full article
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