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Symmetry
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Advances in Fluid Dynamics and Energy Systems: Applications of Symmetry...
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Advances in Fluid Dynamics and Energy Systems: Applications of Symmetry and Asymmetry

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Engineering and Materials".

Deadline for manuscript submissions: 30 April 2026 | Viewed by 1831

Special Issue Editors

Dr. Oscar Alejandro López-Núñez

E-Mail Website
Guest Editor
Facultad de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juarez S/N, California, Mexicali 21280, Mexico
Interests: numerical modeling; CFD; heat transfer; fluid mechanics; optimization
Dr. José de Jesús Ramírez-Minguela

E-Mail Website
Guest Editor
Department of Chemical Engineering, University of Guanajuato, Guanajuato 36050, Mexico
Interests: fluid dynamics; heat transfer; entropy; fuel cells; CFD simulation
Special Issues, Collections and Topics in MDPI journals
Dr. Jesus Alberto Crespo-Quintanilla

E-Mail Website
Guest Editor Assistant
Division of Life Sciences, University of Guanajuato, El Copal km 9, Guanajuato, Mexico
Interests: fluid dynamics; heat transfer; gas turbines; finite volume method; fluid mechanics; applied thermodynamics; turbomachinery; heat exchangers; CFD simulation; combustion analysis

Special Issue Information

Dear Colleagues,

Fluid dynamics, thermal sciences, and energy systems are key areas of research that continuously push the boundaries of science and engineering. Advances in computational techniques, particularly computational fluid dynamics (CFD), have provided researchers with powerful tools to analyze, simulate, and optimize complex systems across various applications, including fluid mechanics, heat transfer, and renewable energy.

This Special Issue, “Advances in Fluid Dynamics and Energy Systems: Applications of Symmetry and Asymmetry”, aims to gather cutting-edge studies that leverage numerical modeling, simulation, and experimental techniques to deepen our understanding of these fields. While symmetry and asymmetry can serve as valuable analytical perspectives—such as in geometric configurations, boundary conditions, or flow patterns—this issue welcomes research from a broad spectrum of topics and methodologies.

Topics of interest include, but are not limited to, the application of CFD in fluid mechanics, heat transfer, thermodynamics, and renewable energy systems. Contributions that explore the interplay between experimental data and numerical simulations are particularly encouraged as they bridge the gap between theory and real-world applications.

By fostering interdisciplinary contributions, this Special Issue seeks to advance the design, analysis, and optimization of engineering systems, providing both theoretical insights and practical solutions to modern challenges.

Dr. Oscar Alejandro López-Núñez
Dr. José de Jesús Ramírez-Minguela
Guest Editors

Dr. Jesus Alberto Crespo-Quintanilla
Guest Editor Assistant

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. Symmetry is an international peer-reviewed open access monthly 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 2400 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

  • computational fluid dynamics (CFD)
  • modeling of thermal and fluid dynamics
  • symmetry and asymmetry in thermal and fluid systems
  • heat and mass transfer
  • turbulent and laminar flows
  • multiphase flow analysis
  • numerical simulation and experimental validation
  • fluid–structure interaction
  • second law of thermodynamics and entropy generation
  • energy efficiency and optimization
  • renewable energy systems

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  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

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25 pages, 840 KB  
Article
The Optimal Auxiliary Functions Method for Semi-Analytical Solutions of the MHD Mixed Convection Stagnation-Point Flow Problem
by Remus-Daniel Ene, Nicolina Pop and Rodica Badarau
Symmetry 2025, 17(9), 1455; https://doi.org/10.3390/sym17091455 - 4 Sep 2025
Viewed by 281
Abstract
The present paper treats the problem of steady laminar MHD flow of an incompressible viscous fluid for mixed convection stagnation-point flow over a vertical stretching sheet in the presence of an externally magnetic field. By means of the Optimal Auxiliary Functions Method (OAFM), [...] Read more.
The present paper treats the problem of steady laminar MHD flow of an incompressible viscous fluid for mixed convection stagnation-point flow over a vertical stretching sheet in the presence of an externally magnetic field. By means of the Optimal Auxiliary Functions Method (OAFM), the resulting nonlinear ODEs are semi-analytically solved. The impact of various physical parameters, such as the velocity ratio parameter A, the Prandtl number Pr, and the Hartmann number Ha, on the behavior of velocity and temperature profiles is analyzed. Both assisting (λ>0) and opposing (λ<0) flows are considered. The influence of these parameters is tabulated and graphically presented. The originality of this work lies in the development of effective semi-analytical solutions and in the excellent agreement between these solutions and the corresponding numerical solutions. This highlights the accuracy of the proposed method applied to steady laminar MHD flow. A comparative analysis underlines the advantages of the OAFM compared to the iterative method. The obtained results confirm that the OAFM represents a competitive mathematical tool to explore a large class of nonlinear problems with applications in engineering. Full article
(This article belongs to the Special Issue Advances in Fluid Dynamics and Energy Systems: Applications of Symmetry and Asymmetry)
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30 pages, 12183 KB  
Article
Improving Hydrodynamics and Energy Efficiency of Bioreactor by Developed Dimpled Turbine Blade Geometry
by Anton Ruzhanskyi, Sergii Kostyk, Igor Korobiichuk and Vladislav Shybetskyi
Symmetry 2025, 17(5), 693; https://doi.org/10.3390/sym17050693 - 30 Apr 2025
Cited by 2 | Viewed by 883
Abstract
The hydrodynamic efficiency of bioreactors is contingent upon the design of the impeller, particularly the blade geometry, which influences flow symmetry. This study evaluates the impact of dimpled surfaces on the blades of a turbine impeller on mixing processes. Investigations were conducted using [...] Read more.
The hydrodynamic efficiency of bioreactors is contingent upon the design of the impeller, particularly the blade geometry, which influences flow symmetry. This study evaluates the impact of dimpled surfaces on the blades of a turbine impeller on mixing processes. Investigations were conducted using simulations in ANSYS (2021R2) with the k-ε turbulence model and experiments measuring vortex funnel depth and power consumption at 247 rpm in an 11-L cylindrical vessel. Results indicate that dimples disrupt the rotational symmetry of the blades, increasing the volume-averaged flow velocity from 0.312 m/s to 0.321 m/s (a 2.9% increase); the maximum shear strain rate from 161 s−1 to 1442 s−1; and the turbulent vortex frequency from 183 s−1 to 290 s−1 (a 58% increase). The volume-averaged shear strain rate rose from 44 s−1 to 63 s−1 (a 43% improvement), and the vortex funnel depth increased from 44 mm to 50 mm (a 14% increase), indicating enhanced homogenization. This facilitates efficient processing of sensitive biological organisms, such as mycoplasmas, and more robust structures, including fungi and mycelium. However, power consumption increased by 4.5% (from 4.9 W to 5.1 W). Thus, disrupting symmetry with dimples intensifies hydrodynamic processes, enhancing mixing efficiency, but requires optimization to reduce energy costs, offering prospects for advancing biotechnological systems. Full article
(This article belongs to the Special Issue Advances in Fluid Dynamics and Energy Systems: Applications of Symmetry and Asymmetry)
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Review

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33 pages, 2380 KB  
Review
A Comprehensive Review of Symmetrical Multilateral Well (MLW) Applications in Cyclic Solvent Injection (CSI): Advancements, Challenges, and Future Prospects
by Shengyi Wu, Farshid Torabi and Ali Cheperli
Symmetry 2025, 17(9), 1513; https://doi.org/10.3390/sym17091513 - 11 Sep 2025
Viewed by 174
Abstract
This paper presents a comprehensive review and theoretical analysis of integrating Cyclic Solvent Injection (CSI) with multilateral well (MLW) technologies to enhance heavy oil recovery. Given that many MLW configurations inherently exhibit symmetrical geometries, CSI–MLW integration offers structural advantages for fluid distribution. CSI [...] Read more.
This paper presents a comprehensive review and theoretical analysis of integrating Cyclic Solvent Injection (CSI) with multilateral well (MLW) technologies to enhance heavy oil recovery. Given that many MLW configurations inherently exhibit symmetrical geometries, CSI–MLW integration offers structural advantages for fluid distribution. CSI offers a non-thermal mechanism for oil production through viscosity reduction, oil swelling, and foamy oil behaviour, but its application is often limited by poor sweep efficiency and non-uniform solvent distribution in conventional single-well configurations. In contrast, MLW configurations are effective in increasing reservoir contact and improving flow control but lack solvent-based enhancement mechanisms. In particular, symmetrical MLW configurations, such as dual-opposing laterals and evenly spaced fishbone laterals, can facilitate balanced solvent distribution and pressure profiles, thereby improving sweep efficiency and mitigating early breakthrough. By synthesizing experimental findings and theoretical insights from the existing literature, laboratory studies have reported that post-CHOPS CSI using a 28% C3H8–72% CO2 mixture can recover about 50% of the original oil in place after six cycles, while continuous-propagation CSI (CPCSI) has achieved up to ~85% OOIP in 1D physical models. These representative values illustrate the performance spectrum observed across different CSI operational modes, underscoring the importance of operational parameters in governing recovery outcomes. Building on this foundation, this paper synthesizes key operational parameters, including solvent composition, pressure decline rate, and well configuration, that influence CSI performance. While previous studies have extensively reviewed CSI and MLW as separate technologies, systematic analyses of their integration remain limited. This review addresses that gap by providing a structured synthesis of CSI–MLW interactions, supported by representative quantitative evidence from the literature. The potential synergy between CSI and MLW is highlighted as a promising direction to overcome current limitations. By leveraging geometric symmetry in well architecture, the integrated CSI–MLW approach offers unique opportunities for optimizing solvent utilization, enhancing recovery efficiency, and guiding future experimental and field-scale developments. Such symmetry-oriented designs are also central to the experimental framework proposed in this study, in which potential methods, such as the microfluidic visualization of different MLW configurations, spanning small-scale visualization studies, bench-scale experiments on fluid and chemical interactions, and mock field setups with pipe networks, are proposed as future avenues to further explore and validate this integrated strategy. Full article
(This article belongs to the Special Issue Advances in Fluid Dynamics and Energy Systems: Applications of Symmetry and Asymmetry)
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