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Water
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Hydraulic and Transient Performances of Pumped-Storage Units
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Hydraulic and Transient Performances of Pumped-Storage Units

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydraulics and Hydrodynamics".

Deadline for manuscript submissions: 30 June 2024 | Viewed by 880

Special Issue Editor

Dr. Xiaolong Fu

E-Mail Website
Guest Editor
School of Energy Science and Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Nan Gang District, Harbin 150001, China
Interests: pumped-storage unit; hydraulic stability; transient characteristics; 1D–3D coupled flow simulation; multi-objective optimization

Special Issue Information

Dear Colleagues,

Pumped-storage units have gradually become the focus in the hydropower field owing to their importance to sustainable development and the utilization of clean and renewable energy. As the most complex variety of hydraulic machinery, reversible pumped-storage units display significant hydraulic instability and transient characteristics, which has attracted significant interest in the hydropower field.

We are launching this Special Issue of Water, entitled “Hydraulic and Transient Performances of Pumped-Storage Units”, to promote a platform that will enable greater numbers of researchers to contribute to the sharing of knowledge in the field of pumped-storage units. This Special Issue will cover a wide range of disciplines as follows:

  • Hydraulic stability of pumped-storage unit including hump, S-shape characteristicand pressure fluctuations etc.;
  • Transient characteristics of pumped-storage unit using numerical and experimental methods;
  • Hydraulic loss and energy conversion mechanism of pumped-storage unit;
  • Water hammer and water culomn separation in pumped-storage hydraulic system;
  • Flow characteristics and control of pumped-storage unit using numerical and experimental methods;
  • Flow-induced vibrations of pumped-storage unit using numerical and experimental methods;
  • Multi-objective optimization of pumped-storage unit and hydraulic system.

Dr. Xiaolong Fu
Guest Editor

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 100 words) can be sent to the Editorial Office for announcement on this website.

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. Water 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

  • pumped-storage unit
  • hydraulic stability
  • transient characteristics
  • hydraulic loss
  • flow simulation and experiments
  • flow control
  • multi-objective optimization

Published Papers (2 papers)

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Research

17 pages, 3862 KiB  
Article
Flexural-Gravity Waves in a Channel with a Compressed Ice Cover
by Evgeniy Batyaev and Tatiana Khabakhpasheva
Water 2024, 16(9), 1255; https://doi.org/10.3390/w16091255 - 27 Apr 2024
Viewed by 299
Abstract
The characteristics of linear hydroelastic waves propagating in a channel covered with compressed ice are investigated. The channel has a rectangular cross-section and is assumed to be infinite in length. The fluid in the channel is non-viscous and incompressible; its flow is potential. [...] Read more.
The characteristics of linear hydroelastic waves propagating in a channel covered with compressed ice are investigated. The channel has a rectangular cross-section and is assumed to be infinite in length. The fluid in the channel is non-viscous and incompressible; its flow is potential. The ice cover is modelled by an elastic plate of constant thickness frozen to the channel walls. Principal attention is paid to the investigation of the influence of ice compression on the parameters of hydroelastic waves. The problem is solved in a coupled hydroelastic formulation. The profiles of propagating waves in the channel are sought in the form of series on the normal modes of a dry plate. The modes are defined analytically through trigonometric and hyperbolic functions. It is shown that compression in the longitudinal and transverse directions has different effects on the dispersion relations of these hydroelastic waves, their shape and phase, as well as on the critical velocities and strains distribution. Full article
(This article belongs to the Special Issue Hydraulic and Transient Performances of Pumped-Storage Units)
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10 pages, 1768 KiB  
Article
Variability of Double-Porosity Flow, Interporosity Flow Coefficient λ and Storage Ratio ω in Dolomites
by Timotej Verbovšek
Water 2024, 16(8), 1072; https://doi.org/10.3390/w16081072 - 09 Apr 2024
Viewed by 392
Abstract
Seventy-one pumping tests were carried out in various dolomites, revealing two of the less-studied hydrogeological parameters related to double-porosity flow: the interporosity flow coefficient λ and the ratio between storage in the fractures and storage in the whole system (ω). Conceptually, they are [...] Read more.
Seventy-one pumping tests were carried out in various dolomites, revealing two of the less-studied hydrogeological parameters related to double-porosity flow: the interporosity flow coefficient λ and the ratio between storage in the fractures and storage in the whole system (ω). Conceptually, they are both tied to the flow properties of the fractures and matrix and define the communication between these two hydrogeological domains. Five different groups of dolomites were included in this study, with different diagenesis types, crystal sizes, bed thicknesses, fracture intensities and chert contents represented. The results of both parameters reflect variations in the sedimentological and resulting hydrogeological properties of dolomites. The largest values of the interporosity flow coefficient λ (6.53 × 10−1) are found in dolomites formed by late diagenesis, exhibiting the highest degree of fracturing, resulting in fast responses in fractures and large λ values. The values of the storage ratio ω also vary (the range of most values is from 3.32 × 10−4 to 2.14 × 10−1), with the overall range almost completely filling all the theoretical limits from zero to one. The greatest values of ω are found in dolomites with the largest storage, due to the large number of small fractures, and silica diagenesis probably reduces the matrix storage. The correlations among the parameters show some significant relationships, especially between λ and Km, λ and Sf, ω and Sf, and ω and Sm. Full article
(This article belongs to the Special Issue Hydraulic and Transient Performances of Pumped-Storage Units)
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