| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Particle path tracking method in two-and three-dimensional continuously rotating detonation engines |
| Zhou Rui (周蕊), Wu Dan (武丹), Liu Yan (刘岩), Wang Jian-Ping (王健平) |
| State Key Laboratory of Turbulence & Complex Systems, Center for Applied Physics and Technology, Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China |
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Abstract The particle path tracking method is proposed and used in two-dimensional (2D) and three-dimensional (3D) numerical simulations of continuously rotating detonation engines (CRDEs). This method is used to analyze the combustion and expansion processes of the fresh particles, and the thermodynamic cycle process of CRDE. In a 3D CRDE flow field, as the radius of the annulus increases, the no-injection area proportion increases, the non-detonation proportion decreases, and the detonation height decreases. The flow field parameters on the 3D mid annulus are different from in the 2D flow field under the same chamber size. The non-detonation proportion in the 3D flow field is less than in the 2D flow field. In the 2D and 3D CRDE, the paths of the flow particles have only a small fluctuation in the circumferential direction. The numerical thermodynamic cycle processes are qualitatively consistent with the three ideal cycle models, and they are right in between the ideal F–J cycle and ideal ZND cycle. The net mechanical work and thermal efficiency are slightly smaller in the 2D simulation than in the 3D simulation. In the 3D CRDE, as the radius of the annulus increases, the net mechanical work is almost constant, and the thermal efficiency increases. The numerical thermal efficiencies are larger than F–J cycle, and much smaller than ZND cycle.
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Received: 21 February 2014
Revised: 27 May 2014
Accepted manuscript online:
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PACS:
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47.40.Rs
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(Detonation waves)
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47.40.-x
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(Compressible flows; shock waves)
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Corresponding Authors:
Zhou Rui
E-mail: ameliazhr@163.com
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Cite this article:
Zhou Rui (周蕊), Wu Dan (武丹), Liu Yan (刘岩), Wang Jian-Ping (王健平) Particle path tracking method in two-and three-dimensional continuously rotating detonation engines 2014 Chin. Phys. B 23 124704
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