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Advances in Computational and Experimental Fluid Dynamics

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Fluid Science and Technology".

Deadline for manuscript submissions: closed (30 November 2025) | Viewed by 1634

Special Issue Editors


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Guest Editor
The Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, University of Iceland, 102 Reykjavik, Iceland
Interests: turbulent flow; computational fluid dynamics; machine learning; experiment; energy

E-Mail Website1 Website2
Guest Editor
1. The Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, University of Iceland, 102 Reykjavik, Iceland
2. Juelich Supercomputing Centre, Jülich, Germany
Interests: computational fluid dynamics; high-performance computing; deep learning; big data

Special Issue Information

Dear Colleagues,

Fluid dynamics research is fundamentally rooted in three key approaches: experimental investigation, analytical modeling, and numerical simulation. In recent years, the rise of artificial intelligence (AI) has introduced powerful new methodologies—both data-driven and physics-informed—that are rapidly transforming the field. These techniques offer valuable tools for uncovering complex flow behaviors, optimizing designs, and enhancing predictive capabilities.

This Special Issue invites researchers from both academia and industry to submit original contributions that advance our understanding and application of computational fluid dynamics (CFD), experimental methods, and AI-based modeling in fluid dynamics. Submissions may explore a wide range of topics, including simulations of compressible and incompressible flows, experimental studies that provide new insights into fluid behavior, and the application of CFD to energy-related systems such as wind, hydrogen, solar, and hydropower.

We are also interested in contributions that address multiphase flows through combined CFD and experimental approaches, and in studies utilizing the Lattice Boltzmann Method (LBM), particularly in scenarios where traditional CFD methods encounter limitations. We are interested in publishing research on CFD; experiments involving turbomachines (pump, turbine, compressor); research on turbulent flows, whether through detailed experiments or high-fidelity simulations; and reduced-order modeling techniques such as proper orthogonal decomposition.

Advances in high-performance computing (HPC) have significantly expanded the capabilities of CFD, allowing for more complex and higher-dimensional simulations. We welcome studies that leverage these computational resources, as well as those investigating particle-laden turbulent flows, flow control strategies, and predictive modeling techniques. Of particular interest are the applications of machine learning and deep learning in fluid dynamics, which use large datasets from experiments and simulations to improve our understanding and accelerate innovation.

Additional topics may include the use of CFD in addressing climate change and meteorological phenomena, as well as its role in oceanographic studies. We are also open to submissions that apply continuum mechanics approaches to better analyze and interpret turbulent flow behavior. Overall, this Issue seeks to highlight innovative, interdisciplinary research that pushes the boundaries of fluid dynamics and offers meaningful contributions to both theoretical knowledge and real-world applications.

Dr. Reza Hassanian
Prof. Dr. Morris Riedel
Guest Editors

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. Applied Sciences 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 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

  • CFD
  • experiment
  • turbulent
  • machine learning
  • deep learning
  • Lattice Boltzmann
  • energy
  • AI-based model
  • simulation
  • prediction model
  • compressible
  • incompressible
  • fluid dynamics
  • high-performance computing

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Published Papers (3 papers)

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Research

17 pages, 4006 KB  
Article
The Study of Triangular Flow Regulators
by Marek Ochowiak, Magdalena Olszewska, Daniel Janecki, Sylwia Włodarczak, Andżelika Krupińska and Magdalena Matuszak
Appl. Sci. 2025, 15(22), 12325; https://doi.org/10.3390/app152212325 - 20 Nov 2025
Viewed by 218
Abstract
The paper presents the results of tests of flow regulators with a triangular prismatic cross-section chamber. The aim of the paper was to experimentally and numerically (CFD) assess the water flow for different design variants of the regulators. Three variants of flow regulators [...] Read more.
The paper presents the results of tests of flow regulators with a triangular prismatic cross-section chamber. The aim of the paper was to experimentally and numerically (CFD) assess the water flow for different design variants of the regulators. Three variants of flow regulators with a triangular prismatic cross-section chamber were analysed: without a barrier (FRWB), with a short barrier (FRSB), and with a long barrier (FRLB). Simultaneously, numerical simulations were carried out using the SST k-ω turbulence model (CFD). The obtained flow characteristics Q = f(H) showed the clear effect of the presence and length of the barrier on the efficiency of flow restriction. The regulators with a long barrier (FRLB) provided the highest flow damping and the highest stability of the system’s operation, which was confirmed by the experimental tests and CFD analyses. The regulators without a barrier (FRWB) were characterized by the highest liquid flow rate and the lowest damping efficiency. The use of a long barrier allowed for an increased control efficiency and improved predictability of the device’s operation. The triangular cross-section of the chamber favours the formation of a stable vortex flow and increases the efficiency of the regulator’s operation. Full article
(This article belongs to the Special Issue Advances in Computational and Experimental Fluid Dynamics)
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21 pages, 4394 KB  
Article
Design Space Exploration and Performance Evaluation of Aerodynamic Appendages for a Racing Motorcycle Prototype Through a Parametric Multi-Software Workflow
by Massimiliano Chillemi, Alessandro Caristi, Filippo Cucinotta, Giacomo Risitano and Emmanuele Barberi
Appl. Sci. 2025, 15(22), 12064; https://doi.org/10.3390/app152212064 - 13 Nov 2025
Viewed by 409
Abstract
The aerodynamic performance of racing motorcycles plays a crucial role in improving speed, stability, and rider control under dynamic conditions. While most existing studies focus on front-mounted winglets and fairing extensions, the aerodynamic role of rear fairing appendages remains comparatively unexplored despite their [...] Read more.
The aerodynamic performance of racing motorcycles plays a crucial role in improving speed, stability, and rider control under dynamic conditions. While most existing studies focus on front-mounted winglets and fairing extensions, the aerodynamic role of rear fairing appendages remains comparatively unexplored despite their potential influence on drag, downforce distribution, and wake behaviour. In this work, three alternative rear winglet configurations were parametrically designed in Siemens NX and systematically evaluated within a validated CFD framework based on Simcenter STAR-CCM+, with the aim of assessing how geometric variations influence aerodynamic performance and achieve a favourable trade-off between reduced aerodynamic resistance and enhanced rear downforce. The numerical setup employed has been previously validated against wind-tunnel measurements in similar aerodynamic applications, ensuring the reliability and accuracy of the predicted flow fields. A Design Space Exploration (DSE) was performed through an automated multi-software workflow, enabling systematic variation in key geometric parameters and real-time assessment of their aerodynamic effects. The study revealed distinct influences of the different configurations on drag and lift coefficients, as well as on wake structure and flow detachment, highlighting the critical aerodynamic mechanisms governing rear stability and flow closure. Through iterative design and simulation, the workflow identified the most effective configuration, achieving a balance between reduced aerodynamic resistance and increased downforce, both essential for competitive racing performance. The results demonstrate the potential of integrating parametric modelling, automated CFD simulation, and DSE optimization in the aerodynamic design phase. This methodology not only offers new insights into the scarcely studied rear aerodynamic region of racing motorcycles but also establishes a replicable framework for future developments involving advanced optimization algorithms, experimental validation, and wake-interaction analyses between leading and trailing riders. Full article
(This article belongs to the Special Issue Advances in Computational and Experimental Fluid Dynamics)
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26 pages, 10013 KB  
Article
Study on the Evolution Law of Ice–Water Transport During the Ice Flood Period in the Shisifen Section of the Yellow River in Inner Mongolia
by Yu Deng, Kaidi Duan and Yong Zhu
Appl. Sci. 2025, 15(18), 10270; https://doi.org/10.3390/app151810270 - 21 Sep 2025
Viewed by 576
Abstract
Ice disasters in the Yellow River’s Inner Mongolia reach exhibit sudden onset and high destructiveness, driven by climatic and channel constraints. The Shisifen Bend, within this reach, is particularly prone to initial ice jamming during freeze-up periods annually. This susceptibility arises from channel [...] Read more.
Ice disasters in the Yellow River’s Inner Mongolia reach exhibit sudden onset and high destructiveness, driven by climatic and channel constraints. The Shisifen Bend, within this reach, is particularly prone to initial ice jamming during freeze-up periods annually. This susceptibility arises from channel narrowing, increased upstream ice influx, and complex river morphology. To address persistent ice flood risks and mitigation challenges at Shisifen Bend, this study developed a coupled ice-transport numerical model. Utilizing MIKE21’s hydrodynamic and particle tracking modules alongside measured bathymetric and depth data, the model simulates ice movement under three distinct flow conditions: 2000, 2500, and 3000 m3/s. Analysis of ice trajectories and distribution patterns under varying flow conditions reveals key transport mechanisms for both ice and water. These findings provide critical insights for enhancing ice flood prevention and disaster reduction strategies along the Inner Mongolia Yellow River during freeze-up period. Full article
(This article belongs to the Special Issue Advances in Computational and Experimental Fluid Dynamics)
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