Hydrodynamics in Pressurized Pipe Systems

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

Deadline for manuscript submissions: 25 November 2024 | Viewed by 2200

Special Issue Editor


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Guest Editor
Department of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology Szczecin, Piastów 19, 70-310 Szczecin, Poland
Interests: water hammer; unsteady pipe flow; transient flow, cavitation; unsteady friction; retarded strain; numerical modelling; analytical solutions
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Special Issue Information

Dear Colleagues,

The field of hydrodynamics, the study of fluids in motion, presents a vast array of challenges, spanning scientific and engineering realms. Among these challenges, the task of understanding and predicting transient flow phenomena, especially in pipe systems, stands out.

Transient pipe flow poses unique challenges due to its dynamic nature, where the fluid flow conditions rapidly change in response to factors like valve operations, pump start-ups or shutdowns, and sudden changes in flow rate or pressure. Water hammer, a key concern in transient flow, can lead to pressure surges that can potentially damage the system, thus necessitating sophisticated modeling techniques and control strategies for mitigation.

Beyond the transient flow challenges, hydrodynamic research grapples with broader issues such as optimizing fluid transport efficiency, reducing energy consumption, and mitigating environmental impacts. Understanding turbulent flow behavior, for instance, is crucial across various industries, from aerospace engineering to oceanography.

Additionally, the interaction between fluid flow and solid structures remains a focal point of ongoing research. Moreover, hydrodynamic principles play a pivotal role in emerging sectors like renewable energy and advanced manufacturing. Whether enhancing tidal energy turbines or refining additive manufacturing processes, the field of hydrodynamics fuels both innovation and progress across diverse fields.

Addressing these multifaceted challenges demands interdisciplinary collaboration, drawing from expertise in fluid mechanics, computational modeling, materials science, and beyond. Through concerted efforts, researchers and engineers can chart new pathways for sustainable development, technological innovation, and a deeper understanding of the natural world.

We are pleased to present the opportunity to contribute to our Special Issue focusing on transient flow phenomena and hydrodynamics challenges. Submit your paper and be part of the transformative dialogue shaping the future of fluid dynamics research!

Dr. Kamil Urbanowicz
Guest Editor

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Keywords

  • hydrodynamics
  • hydraulics
  • pressurized water pipelines
  • transient flow
  • unsteady flow

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Published Papers (2 papers)

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Research

19 pages, 11487 KiB  
Article
Real-Time Analysis and Digital Twin Modeling for CFD-Based Air Valve Control During Filling Procedures
by Duban A. Paternina-Verona, Oscar E. Coronado-Hernández, Elias Tasca, Modesto Pérez-Sánchez and Helena M. Ramos
Water 2024, 16(21), 3015; https://doi.org/10.3390/w16213015 - 22 Oct 2024
Viewed by 554
Abstract
Air exchange in pressurized water pipelines is an essential but complex aspect of pipeline modeling and operation. Implementing effective air management strategies can yield numerous benefits, enhancing the system’s energy efficiency, reliability, and safety. This paper comprehensively evaluates an irregular profile pipeline filling [...] Read more.
Air exchange in pressurized water pipelines is an essential but complex aspect of pipeline modeling and operation. Implementing effective air management strategies can yield numerous benefits, enhancing the system’s energy efficiency, reliability, and safety. This paper comprehensively evaluates an irregular profile pipeline filling procedure involving air-release through an air valve. The analysis includes real-time data tests and numerical simulations using Computational Fluid Dynamics (CFD). A Digital Twin model was proposed and applied to filling maneuvers in water installations. In particular, this research considers an often-overlooked aspect, such as filling a pipe with an irregular profile rather than a simple straight pipe. CFD simulations have proven to capture the main features of the transient event, which are suitable for tracking the air-water interface, the unsteady water flow, and the evolution of the trapped air pocket. Thus, they provide thorough and reliable information for real-time operational processes in the industry, focusing on the filling pressure and geometry of the air-valve hydraulic system. Additionally, this study provides details regarding the application of an efficient Digital Twin CFD approach, demonstrating its feasibility in optimizing the filling procedure in pipes with irregular profiles. Full article
(This article belongs to the Special Issue Hydrodynamics in Pressurized Pipe Systems)
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13 pages, 9301 KiB  
Article
Simulation of Flow and Pressure Loss in the Example of the Elbow
by Emil Smyk, Michał Stopel and Mikołaj Szyca
Water 2024, 16(13), 1875; https://doi.org/10.3390/w16131875 - 29 Jun 2024
Cited by 1 | Viewed by 1085
Abstract
One of the most basic issues in fluid mechanics is the description of flow in closed flows; more precisely, the calculation of pressure drops and the description of the flow form. Therefore, in this paper, the numerical simulation of the flow through the [...] Read more.
One of the most basic issues in fluid mechanics is the description of flow in closed flows; more precisely, the calculation of pressure drops and the description of the flow form. Therefore, in this paper, the numerical simulation of the flow through the elbow was presented. This case was used to comprehensively describe the most important phenomena that should be taken into account during closed flows. The elbow was chosen as one of the most frequently used fittings in practice. The simulation was made with ANSYS Fluent, with the use of the turbulent model k-ω, SIMPLE simulation method, and at Reynolds number Re=500100,000. The minor and major pressure loss were presented and discussed in the paper. The minor loss coefficient at the high Reynolds number was equal to around 0.2, which is close to the value of 0.22 used in engineering calculations. The influence of the Reynolds number on the shift of the stream separation point in the elbow was described. The secondary flow in the elbow was observed and the vortex structure was discussed and shown with the use of the Q-criterion (Q iso surface for level 0.005). This analysis allowed us to better visualize and describe the complex flow structure observed in the investigated case. Full article
(This article belongs to the Special Issue Hydrodynamics in Pressurized Pipe Systems)
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