Flow Control Techniques: Advances in Flow System Analysis, Modeling and Applications, 2nd Edition

A special issue of Fluids (ISSN 2311-5521).

Deadline for manuscript submissions: 31 May 2026 | Viewed by 607

Special Issue Editor


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Guest Editor
Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Torino, Italy
Interests: flow control; computational fluid dynamics; compressor rotating stall; fluidic thrust vectoring; gasturbine design and control
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Special Issue Information

Dear Colleagues,

Flow control is a fascinating topic of fluid dynamics that can play a key role in the route to the CO2-neutral growth of aviation transportation. The ambitious goals involved in this road map have pushed the designers towards aggressively optimized designs of flow devices and gas turbine components, which often become more prone to instabilities or abrupt performance losses in off-design conditions. 

Therefore, passive and active flow control strategies can enhance the performances of aerodynamic devices and increase safety margins both in subsonic and supersonic flight.

The key aspects of a flow control application are:

  1. The derivation of accurate real-time models of the nonlinear flow field. Substantial improvement on this topic may derive from recent advances in CFD simulations and experimental testing, that allow for a deeper understanding of flow unsteadiness and instabilities.
  2. The development of reliable flow manipulators and sensing systems, composed of a network of either physical or virtual sensors;
  3. The design of robust control laws, tailored to the specific system (e.g., by using the Digital Twin concept and Artificial Intelligence approaches) and to the targets of each flight mission phase. 

This Special Issue aims to collect the latest advances in the different techniques of passive and active flow control, including theoretical flow modeling, experimental investigations and numerical simulations of controlled/uncontrolled flow fields. Applications of classical approaches or artificial intelligence-based model reductions (e.g., by using deep learning, reinforced learning, and physically informed neural networks) are welcome.

Dr. Michele Ferlauto
Guest Editor

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Keywords

  • trapped vortex
  • shock wave control
  • drag reduction
  • high-lift profile
  • fluidic thrust vectoring
  • nozzle instabilities
  • dynamic stall
  • compressor rotating stall
  • synthetic jet
  • virtual shaping
  • plasma actuators
  • dielectric barrier discharge plasma actuator
  • combustion instability
  • supersonic inlets
  • scramjet

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Published Papers (1 paper)

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Research

21 pages, 5641 KB  
Article
Flow-Field Characterization of Multiple Low-Density Gas Jets Impinging on a Wall at a Short Distance Using PIV
by Giovanni Cecere, Mats Andersson, Simona Silvia Merola and Adrian Irimescu
Fluids 2026, 11(4), 103; https://doi.org/10.3390/fluids11040103 - 19 Apr 2026
Viewed by 178
Abstract
This paper studies the dynamics of a low-density gas directly injected onto a flat wall, focusing on the influence of different pressure ratios (PRs) and plate position. Due to safety reasons, Helium (He) was employed as substitute to reproduce the mixing characteristics of [...] Read more.
This paper studies the dynamics of a low-density gas directly injected onto a flat wall, focusing on the influence of different pressure ratios (PRs) and plate position. Due to safety reasons, Helium (He) was employed as substitute to reproduce the mixing characteristics of hydrogen. A Nd:YAG laser has been used to generate the luminous background in the constant volume chamber (CVC) and vegetable oil particles as trackers to identify the induced flow-field. Two configurations were investigated: the first, with a flat wall perpendicularly positioned at an axial distance of 10 mm from the injector tip, and the second with the same plate at 30 mm downstream of the injector, inclined at 30°. The pressure of injection was swept from 20 to 50 bar, while the backpressure inside the CVC ranged from 2 to 6 bar to enable the reproduction of five different values of PRs: 3, 4, 7, 10 and 17. The comparison of the results in the two configurations has highlighted the role of the plate at short distance in decelerating the jet speed (230 m/s to 160 m/s) while improving the vorticity intensity (+10%). In addition, a stagnation region was observed to form on the flat wall, downstream of the injector axis for 10 mm configuration. In this area the velocity ranged from 50% to 60% compared to the average jet speed. This phenomenon was noted to be less pronounced with the 30 mm, 30° configuration that led to a more contained speed reduction to 150–160%. Full article
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