Unsteady Simulation of Ignition of Turbulent Reactive Swirling Flow of Novel Design of Solid-Fuel Ramjet Motor

Omer Musa, Xiong Chen, Yingkun Li, Weixuan Li and Wenhe Liao
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Omer Musa: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Xiong Chen: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Yingkun Li: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Weixuan Li: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Wenhe Liao: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Energies, 2019, vol. 12, issue 13, 1-32

Abstract: This paper presents a numerical investigation of ignition and combustion stabilization of a novel design of a solid-fuel ramjet (SFRJ) motor with and without swirl flow. The proposed design includes two solid fuels, retaining the simple design of the classic SFRJ. Numerical simulations of unsteady, turbulent, reactive, and swirling flow coupled with solid-fuel pyrolysis have been performed using an in-house CFD solver. Experiments on SFRJ were conducted via a connected-pipe test facility to validate the developed code. Furthermore, the code was validated for chemical reactions, heat diffusion, and swirl flow by using benchmark test cases of shock-induced, semi-infinite plate, and dump combustor with swirl flow, respectively. Then, the proposed and classic designs were simulated for the same inflow conditions and configurations, and the results were analyzed and discussed. It is found that the mixing degree, reactant residence time, mass flux, ignition delay time, and regression rate improve when using the proposed design. Moreover, the proposed design reveals interesting observations of a new flame being created and merged with the main flame.

Keywords: solid fuel; ramjet; CFD; combustion characteristics; propulsion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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