Advances in Experimental and Computational Combustion

A special issue of Aerospace (ISSN 2226-4310).

Deadline for manuscript submissions: closed (31 December 2025) | Viewed by 670

Special Issue Editor


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Guest Editor
Department of Mechanical Engineering, Allen E Paulson College of Engineering and Computing, Georgia Southern University, Statesboro, GA 30460, USA
Interests: turbulence modeling; large-eddy simulations; direct numerical simulations; hybrid RANS/LES; analytical and computational combustion; high-speed combustion; gas, liquid and solid combustion; multi-phase flows; propulsion systems; turbomachinery

Special Issue Information

Dear Colleagues,

Combustion processes are integral to various aerospace engineering applications, such as aircraft engines, rocket engines, and high-speed propulsion systems (ramjets/scramjets). All these propulsion systems depend on chemically reacting flows. It is also anticipated that combustion will remain, at least in aerospace applications, the main source of energy for several decades until renewable energy sources become more economically viable. However, due to concerns regarding climate change and environmental impacts, the combustion of fossil fuels is a challenging issue that requires further research. Thus, furthering our understanding of the combustion phenomenon/process will contribute to enhancing combustion efficiency, reducing pollutant emissions, and the development of efficient combustion systems.

This Special Issue of Aerospace will cover recent developments and advances in experimental, analytical, and computational combustion in relation to aerospace propulsion systems, such as aircraft engines, rocket engines, supersonic/hypersonic combustion, ramjets, and scramjets. Possible topics include, but are not limited to, liquid and solid rocket engine combustion, supersonic/hypersonic combustion, thermos-acoustic instabilities, swirl combustion, turbulence phenomena, laminar and turbulent combustion, flame–acoustics coupling, the development of chemical kinetics models, analytical, numerical, and computational methods for laminar and turbulent combustion, combustion uncertainty, machine learning in combustion, increased combustion efficiency, and reduced emissions.

The Guest Editor of this Special Issue invites authors to submit papers addressing current challenges in experimental, analytical, and computational combustion encountered in aerospace applications to advance the current status of combustion research while addressing climate change and environmental challenges.

Dr. Marcel Ilie
Guest Editor

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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. Aerospace 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

  • aircraft engine
  • air-breathing propulsion
  • turbojet engine
  • turbofan engine
  • supersonic/hypersonic combustion
  • turbulence modeling
  • turbulent reacting flows
  • premixed combustion
  • non-premixed combustion
  • aeroacoustics and combustion-generated noise
  • large-eddy simulations (LESs)
  • direct numerical simulations (DNSs)
  • hybrid RANS/LES
  • analytical and computational combustion
  • numerical methods and high-order schemes

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Published Papers (1 paper)

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44 pages, 17833 KB  
Article
Turbulent Flame Behavior near Blow-Off in Multi-Stage Swirl Combustors: A Hybrid RANS-LES Study
by Marcel Ilie and Brandon O'Brien
Aerospace 2026, 13(3), 216; https://doi.org/10.3390/aerospace13030216 - 27 Feb 2026
Viewed by 320
Abstract
Advances in high-performance computing have expanded the use of computational fluid dynamics (CFD) for reacting-flow analysis; however, simulations involving detailed flame kinetics remain computationally intensive for many practical systems. Efficient modeling approaches are therefore essential for predicting flame behavior in swirl-stabilized combustors. This [...] Read more.
Advances in high-performance computing have expanded the use of computational fluid dynamics (CFD) for reacting-flow analysis; however, simulations involving detailed flame kinetics remain computationally intensive for many practical systems. Efficient modeling approaches are therefore essential for predicting flame behavior in swirl-stabilized combustors. This study examines the influence of main-stage swirl intensity on near-lean blow-off characteristics in a multistage swirl combustor using a hybrid RANS–LES framework. The Stress Blended Eddy Simulation (SBES) model, coupled with a Flamelet Generated Manifold (FGM) combustion formulation, is employed to capture key turbulence–chemistry interactions. Results indicate that reducing swirl intensity suppresses the formation of a swirl-stabilized flame, while excessive swirl negatively affects emission performance. For the baseline (S2) and high-swirl (S3) configurations, flame lift-off height increases by 21.0% and 11.96%, respectively, for every 0.1 reduction in equivalence ratio. The S3 case also demonstrates reduced combustion efficiency, with CO emissions rising by 156.4% relative to S2. Local flame extinction is observed in regions of strong droplet–flame interaction, highlighting enhanced quenching susceptibility under near-blow-off conditions. The present study investigates the flame dynamics in a multi-stage swirl combustor using high-fidelity CFD simulations. This study has yet to be validated through experimental analysis and the results presented in this work are entirely computational. Further experimental validation is necessary to verify the results. Full article
(This article belongs to the Special Issue Advances in Experimental and Computational Combustion)
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