Combustion and Turbulence

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

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 4048

Special Issue Editors


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Guest Editor
CORIA – CNRS UMR 6614, Saint Etienne du Rouvray, France
Interests: fluid dynamics; combustion

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Guest Editor
UM-SJTU Joint Institute, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, China
Interests: turbulence; combustion; CFD

Special Issue Information

Dear Colleagues,

Combustion and turbulence, although classical research areas with a long research history, play even more important roles in modern technologies in aerospace. From the consideration of the strong need for a higher performance of energy utilization and aerospace-related designs, various issues in combustion and turbulence must be sufficiently understood or revisited. This Special Issue offers a good opportunity for the discussion of fundamentals and applications of combustion and turbulence, including flame dynamics, flow structure interaction, modeling of turbulence, etc. Some of these topics are enlightening and expected to raise new horizons. We hope the meaningfulness of this Special Issue can be recognized by the community and research peers. Finally, the editors appreciate the support of the journal Aerospace and all the contributors.

Dr. Michael Gauding
Prof. Dr. Lipo Wang
Guest Editors

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Keywords

  • combustion
  • turbulence
  • numerical simulation
  • aerodynamics

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Published Papers (1 paper)

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Research

19 pages, 12585 KiB  
Article
Influence of Plasma on the Combustion Mode in a Scramjet
by Yu Meng, Hongbin Gu and Fang Chen
Aerospace 2022, 9(2), 73; https://doi.org/10.3390/aerospace9020073 - 28 Jan 2022
Cited by 13 | Viewed by 3460
Abstract
To examine the plasma-assisted combustion of a scramjet, a microwave-enhanced gliding arc plasma method was proposed in this study, and the flame structure and combustion instability were observed. The mechanism of plasma-assisted combustion was obtained via a Bunsen experiment, and then the influence [...] Read more.
To examine the plasma-assisted combustion of a scramjet, a microwave-enhanced gliding arc plasma method was proposed in this study, and the flame structure and combustion instability were observed. The mechanism of plasma-assisted combustion was obtained via a Bunsen experiment, and then the influence on supersonic combustion was obtained on a direct-connected scramjet. The active species of the flame was determined via optical emission spectroscopy, and the flame temperature was measured with a thermocouple. The luminous intensity of the OH radicals in the flame increased ninefold when the flame temperature was increased to 1573 K, but the luminous intensity of CH* and C2 was not obviously changed with the excitation of arc plasma. Moreover, the DC arc plasma had no effect on the rotation and the vibration temperature of OH radicals under these experimental conditions. In the range of microwave energy less than 800 W, there was no typical change in the intensity of the radicals; however, when the microwave power was up to 1000 W, the effect became obvious. When plasma was applied to the scramjet, the plasma caused the pre-combustion shock train to move forward, and the initial and stable position of the flame was transferred from the cavity shear layer to the front of the fuel jet. These results clearly show that plasma free radical mechanisms cause changes to combustion modes. Full article
(This article belongs to the Special Issue Combustion and Turbulence)
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