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Title: Detailed structure of spinning detonation in a circular tube

Abstract

A single spinning detonation wave propagating in a circular tube, discovered experimentally in 1926, is simulated three-dimensionally with a detailed chemical reaction mechanism. The detonation front obtained numerically rotates periodically with a Mach leg, whiskers, and a transverse detonation. A long pressure trail, which is distributed from the transverse detonation to downstream, was reproduced, clearly showing that the pressure trail also spins synchronously with the transverse detonation. The formation of an unburned gas pocket behind the detonation front was not observed in the present simulations because the rotating transverse detonation completely consumed the unburned gas. The calculated profiles of instantaneous OH mass fraction have a keystone shape behind the detonation front. The numerical results for pitch, track angle, Mach stem angle, and incident shock angle on the tube wall agree well with the experimental results. (author)

Authors:
 [1]; ;  [2]
  1. Space Transportation Engineering Department, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Yoshinodai 3-1-1, Sagamihara, Kanagawa 229-8510 (Japan)
  2. Department of Mechanical Engineering, Aoyama Gakuin University, Fuchinobe 5-10-1, Sagamihara, Kanagawa 229-8558 (Japan)
Publication Date:
OSTI Identifier:
20880645
Resource Type:
Journal Article
Resource Relation:
Journal Name: Combustion and Flame; Journal Volume: 149; Journal Issue: 1-2; Other Information: Elsevier Ltd. All rights reserved
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; EXPLOSIONS; TUBES; ROTATION; COMBUSTION KINETICS; WAVE PROPAGATION; DETONATION WAVES; PERIODICITY; COMPUTERIZED SIMULATION; THREE-DIMENSIONAL CALCULATIONS; MASS; WALLS; MATHEMATICAL MODELS

Citation Formats

Tsuboi, N., Eto, K., and Hayashi, A.K.. Detailed structure of spinning detonation in a circular tube. United States: N. p., 2007. Web. doi:10.1016/J.COMBUSTFLAME.2006.12.004.
Tsuboi, N., Eto, K., & Hayashi, A.K.. Detailed structure of spinning detonation in a circular tube. United States. doi:10.1016/J.COMBUSTFLAME.2006.12.004.
Tsuboi, N., Eto, K., and Hayashi, A.K.. Sun . "Detailed structure of spinning detonation in a circular tube". United States. doi:10.1016/J.COMBUSTFLAME.2006.12.004.
@article{osti_20880645,
title = {Detailed structure of spinning detonation in a circular tube},
author = {Tsuboi, N. and Eto, K. and Hayashi, A.K.},
abstractNote = {A single spinning detonation wave propagating in a circular tube, discovered experimentally in 1926, is simulated three-dimensionally with a detailed chemical reaction mechanism. The detonation front obtained numerically rotates periodically with a Mach leg, whiskers, and a transverse detonation. A long pressure trail, which is distributed from the transverse detonation to downstream, was reproduced, clearly showing that the pressure trail also spins synchronously with the transverse detonation. The formation of an unburned gas pocket behind the detonation front was not observed in the present simulations because the rotating transverse detonation completely consumed the unburned gas. The calculated profiles of instantaneous OH mass fraction have a keystone shape behind the detonation front. The numerical results for pitch, track angle, Mach stem angle, and incident shock angle on the tube wall agree well with the experimental results. (author)},
doi = {10.1016/J.COMBUSTFLAME.2006.12.004},
journal = {Combustion and Flame},
number = 1-2,
volume = 149,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}
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