Vortex Dynamics

A special issue of Fluids (ISSN 2311-5521). This special issue belongs to the section "Mathematical and Computational Fluid Mechanics".

Deadline for manuscript submissions: 31 March 2026 | Viewed by 562

Special Issue Editors


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Guest Editor
Mechanical Engineering Institute, Federal University of Itajubá (UNIFEI), Itajubá 37500-903, MG, Brazil
Interests: vortex dynamics; heat transfer; turbulence; vortex-induced vibrations; turbomachinery; particulate flows

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Guest Editor
School of Engineering and Sciences, São Paulo State University (UNESP), Guaratinguetá 12.516-410, SP, Brazil
Interests: computational aerodynamics; vortex shedding suppression; drag reduction; ground effect

Special Issue Information

Dear Colleagues,

Almost all physical phenomena invariably involve fluid flow, an important feature of which is vorticity and its interaction with heat transfer and/or mass transport. The complexities of such flows in terms of turbulence manifestation and surface roughness conditions impose significant challenges when it comes to studying them. This Special Issue aims to cover the most recent advances in vortex dynamics from theoretical, experimental, and numerical perspectives, which could have useful applications in a wide range of engineering and scientific fields. Consequently, we welcome submissions on topics including, but not limited to, the following:

(1) Boundary layer with roughness surface effect;

(2) Flow-induced vibrations (FIVs);

(3) Heat–vortex interaction;

(4) Particulate flows;

(5) RANS/LES/DNS simulations of incompressible flows;

(6) The rigorous validation of experimental methods;

(7) Turbomachinery;

(8) Vortex dynamics.

Prof. Dr. Luiz Antonio Alcântara Pereira
Prof. Dr. Alex Mendonça Bimbato
Guest Editors

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Keywords

  • aircraft wake vortices
  • bluff body aerodynamics
  • boundary layer flow
  • coherent structures
  • computational fluid dynamics (CFD) modeling and the simulation of vortical flows
  • gas particle two-phase free turbulent flow
  • ground effect mechanisms
  • heat transfer
  • analysis of interactions among particles using fast multipole methods (FMMs) and/or CUDA technology
  • linear stability analysis
  • magnus effect
  • multiple bodies
  • separated flow
  • slender body aerodynamics
  • surface roughness
  • turbulence in fluids
  • vertical axis-type wind turbine
  • vortex-induced vibrations (VIVs)
  • wake-induced vibrations (WIVs)
  • wind tunnel testing of vehicles

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Published Papers (1 paper)

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Research

25 pages, 12600 KB  
Article
VIV Response and Drag Measurements of a Rough Circular Cylinder Using the Lagrangian Vortex Method
by Tiago Raimundo Chiaradia, Gabriel Ferraz Marcondes de Carvalho, Victor Hugo Gava Filho, Paulo Guimarães de Moraes, Alex Mendonça Bimbato and Luiz Antonio Alcântara Pereira
Fluids 2025, 10(11), 294; https://doi.org/10.3390/fluids10110294 - 12 Nov 2025
Viewed by 275
Abstract
In the literature, there is a scarcity of studies examining the combined effects of vortex-induced vibrations (VIV) and surface roughness on a bluff body. This paper contributes to the limited studies and literature on VIV by highlighting the pronounced influence of roughness on [...] Read more.
In the literature, there is a scarcity of studies examining the combined effects of vortex-induced vibrations (VIV) and surface roughness on a bluff body. This paper contributes to the limited studies and literature on VIV by highlighting the pronounced influence of roughness on the vortex formation modes of a circular cylinder forced to oscillate with respect to the freestream. The numerical approach utilizes a purely Lagrangian description through the discrete vortex method with a roughness model. Recent results obtained by our research group have shown that a two-dimensional roughness model is more sensitive than a simple turbulence model in capturing nonlinear multi-physics phenomena with a variety of applications in different engineering areas. In particular, the control of drag force and vortex shedding frequency can be studied based on the expected physics of viscous flow. In the present paper, the dimensionless oscillation amplitude is fixed at A/D = 0.13 (D is the outer cylinder diameter), and the cylinder forcing frequency varies in the range of 0.04 ≤ fo ≤ 0.80 at a high Reynolds number value of Re = 1.0 × 105. Three relative roughness sizes are chosen, i.e., ε/D = 0.001, 0.0045, and 0.007 (ε is the average roughness). The test cases without roughness effects are compared to experimental visualizations to capture two basic anti-symmetrical modes, namely the A-I and A-IV modes, the symmetric S-I (Type-I) mode, and the Chaotic mode categorized as C-I. Our strategy to identify these wake modes verifies the synchronization between the vortex shedding frequency fCD, interpreted from temporal history of the drag force on an oscillating cylinder, and the body forcing frequency. In the test cases using the roughness model, it is possible to identify a desynchronization between the frequencies f0 and fCD as well as significant variations in the drag force. The roughness effect also provokes a regime of vortex formation, here classified as “A-IV mode with coalescence”. Full article
(This article belongs to the Special Issue Vortex Dynamics)
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