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New Insights into Fluid Mechanics: Modeling and Computing

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

Deadline for manuscript submissions: 20 September 2025 | Viewed by 510

Special Issue Editors

Department of Mechanical Engineering, The University of Maine, Orono, ME 04469, USA
Interests: bluff body (ships and vehicles) airwakes; active flow control; aircraft aerodynamics; wind turbine; turbomachinery; engine inlet

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Guest Editor
Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China
Interests: train aerodynamics and operation safety; wind engineering; CFD application with AI; flow control; comprehensive comfort evaluation of rail transit
Special Issues, Collections and Topics in MDPI journals

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Guest Editor Assistant
Centre for Computational Science, Department of Chemistry, University College London, London WC1E 6BT, UK
Interests: lattice Boltzmann; high performance computing; uncertainty quantification; machine learning

Special Issue Information

Dear Colleagues,

The field of fluid mechanics is experiencing a transformative phase, driven by rapid advancements in computational power, machine learning techniques, and innovative modeling approaches. This Special Issue, titled “New Insights into Fluid Mechanics: Modeling and Computing”, seeks to explore and disseminate cutting-edge research that pushes the boundaries of our understanding of the fluid mechanics domain.

A significant focus of this Special Issue is on the integration of machine learning in fluid mechanics. This emerging field leverages AI-driven models to predict fluid behavior. Of particular interest are data-driven turbulent models, which utilize vast datasets to enhance our ability to simulate and control turbulence in complex flows. These models enable more reliable and accurate predictions in areas where traditional methods fall short.

The Issue also seeks contributions to innovations in turbulence modeling, particularly in the development and application of Large Eddy Simulations (LES) and Direct Numerical Simulations (DNS), which are crucial for improving our understanding of turbulent flows in a variety of contexts, from aerospace engineering to environmental sciences.

Multiphase flow and fluid–structure interaction (FSI) form other critical areas of focus. Multiphase flow dynamics involves the complex interaction of multiple phases, challenging traditional models. Advances in computational techniques and machine learning offer new insights for accurate simulations. Fluid–structure interaction (FSI) deals with the coupling between fluid flows and structural responses, where improved algorithms and high-performance computing can lead to more efficient modeling.

Finally, the Special Issue will cover advanced flow control simulations, such as those with complex actuators, those leading to the advanced understanding of flow control mechanisms, etc. Furthermore, machine learning-driven flow control strategies are of great interest, which explore how computational techniques and AI can be harnessed to manipulate and optimize fluid flows for performance enhancement.

Dr. Kewei Xu
Dr. Zhengwei Chen
Guest Editors

Dr. Xiao Xue
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. 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

  • machine learning
  • data-driven method
  • turbulent modeling
  • flow control
  • multiphase flow
  • flow–structure interaction
  • lattice Boltzmann methods

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Published Papers (1 paper)

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Research

18 pages, 8196 KiB  
Article
Identification of Natural Sloshing Frequency in a Rectangular Tank Under Surge Excitation Using Coupled Eulerian–Lagrangian Method and Impulse Excitation Method
by Su-Hyun Park, Young Il Park, Taehyun Yoon and Jeong-Hwan Kim
Appl. Sci. 2025, 15(9), 5175; https://doi.org/10.3390/app15095175 - 6 May 2025
Viewed by 190
Abstract
Sloshing in liquid storage tanks is a critical phenomenon that affects the stability, performance, and safety of various engineering systems, including fuel tanks, offshore structures, and industrial storage units. The presence of internal structures, such as vertical baffles, significantly influences the natural sloshing [...] Read more.
Sloshing in liquid storage tanks is a critical phenomenon that affects the stability, performance, and safety of various engineering systems, including fuel tanks, offshore structures, and industrial storage units. The presence of internal structures, such as vertical baffles, significantly influences the natural sloshing frequencies and fluid motion. However, existing theoretical models often rely on simplified assumptions that restrict their capacity to capture the complexities of fluid–structure interactions in baffled tanks. This study integrates the coupled Eulerian–Lagrangian method with the impulse excitation technique to predict natural sloshing frequencies in a rectangular tank with vertical baffles. By analyzing the system’s response to an impulse excitation, we extracted the dominant sloshing frequencies while considering the impact of baffles on fluid dynamics. This computational approach provides a more realistic representation of sloshing phenomena and enables a parametric analysis of how various tank dimensions, fluid properties, and baffle configurations influence sloshing behavior. The findings of this study contribute to the improved design and optimization of liquid storage tanks, ensuring enhanced stability and performance in practical engineering applications. The integration of impulse excitation with the coupled Eulerian–Lagrangian method marks a significant advancement in sloshing analysis, offering a robust framework for understanding and mitigating the effects of sloshing in baffled tanks. Full article
(This article belongs to the Special Issue New Insights into Fluid Mechanics: Modeling and Computing)
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