Numerical study on the characteristics of rotating detonation wave with multicomponent mixtures |
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| Affiliation: | 1. College of Physics and Electromechanical Engineering, Hubei University of Education, Wuhan 430205, PR China;2. Hubei Engineering Research Center for Safety Detection and Control of Hydrogen Energy - Hubei Key Laboratory of Ferro- & Piezo-electric Materials and Devices, School of Microelectronics, Hubei University, Wuhan 430062, PR China;3. School of Chemistry and Environmental Engineering, Wuhan University of Bioengineering, Wuhan 430415, PR China;1. Khristianovich Institute of Theoretical and Applied Mechanics of SB RAS, 630090, Novosibirsk-90, Institutskaya Str. 4/1, Russian Federation;2. Voevodsky Institute of Chemical Kinetics and Combustion of SB RAS, 630090, Novosibirsk-90, Institutskaya Str. 3, Russian Federation;3. Novosibirsk State University, Novosibirsk-90, Pirogov Str. 2, 630090, Russian Federation;1. Institute of Advanced Optical Technologies ? Thermophysical Properties (AOT-TP), Department of Chemical and Biological Engineering (CBI) and Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 8, 91052 Erlangen, Germany;2. Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstraße 1, 91058 Erlangen, Germany;3. Institute of Chemical Reaction Engineering (CRT), Department of Chemical and Biological Engineering (CBI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058 Erlangen, Germany;1. Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland;2. Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland;1. Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education, China;2. Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, 400030, China |
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| Abstract: | In order to investigate the effects of gas mixture components on the combustion characteristics of rotating detonation wave, two-dimensional simulation is presented to simulate the propagation process of rotating detonation wave with different methane conversions. The results indicate that there are five propagation modes of rotating detonation wave with different components: single-wave mode, single wave with counter-rotating components mode, double-waves mode, triple-waves mode and quadruple-waves mode. The detonation wave propagates along the forward direction in all five modes. With the increase of methane conversion, multi-wave mode appears in the combustion chamber. The fuel component has a great influence on the heat release ratio of detonation combustion. The velocity of detonation wave decreases with the increase of methane conversion. With the increase of methane conversion, the chemical reaction rate gradually increases, which leads to the intensification of chemical reaction on the deflagration surface. The reaction on the deflagration surface develops to the unburned fuel zone, which eventually leads to the formation of compression waves and shock waves in the fuel refill zone. When the shock wave sweeps through the fresh premixed gas, the reactant is compressed to form a detonation point and then ignite the fuel. A new detonation wave is finally formed. The total pressure ratio decreases with the increasing methane conversion, and the uniformity of the total pressure of outlet decreases with increasing methane conversion. |
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| Keywords: | Multicomponent fuels Rotating detonation Propagation characteristics Total pressure ratios |
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