NUMERICAL STUDY OF A DETONATION WAVE STRUCTURE IN ANNULAR CHAMBER

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FARAHANI MOHAMMAD; BADRGOLTAPEH MOHAMMAD

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:7 Page(s): 343-352

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Information Journal Paper

Title

NUMERICAL STUDY OF A DETONATION WAVE STRUCTURE IN ANNULAR CHAMBER

Author(s)

FARAHANI MOHAMMAD | BADRGOLTAPEH MOHAMMAD | Issue Writer Certificate

Keywords

ROTATING DETONATION ENGINEQ1

ROTATING DETONATION COMBUSTION MODELINGQ1

GEOMETRY DESIGN OF RDEQ1

2D SIMULATION OF RDEQ1

Abstract

Detonation engines are expected to be used as propulsion system in aerospace applications in the future. Several types of detonation engines are currently under examination, including the ROTATING DETONATION ENGINE (RDE). In this work, the feasibility study for design of a laboratory sample RDE which has an annular geometry with diameter of 76 mm has been performed. In this sample, hydrogen and standard air are separately injected into the combustion chamber of detonation engine. First, numerical studies are validated comparing the FLUENT results with the experimental ones. Then, the geometry and equivalence ratio of injection mixture are investigated parametrically. Considering the negligible variations of thermodynamics parameters in the radial direction of flow field to reduce the computational costs, also a 2D model is used for numerical simulations. Three different equivalence ratios were employed. Results show for the case with the equivalence ratio of 1.2, detonation speed, pressure, and temperature behind detonation front is more than the equivalence ratio of 0.8. Also, maximum detonation speed and pressure behind detonation take place in stoichiometric conditions. The parametric study of the chamber length effects was also conducted using a length 0.5 and 2 times of the main chamber. Because the chamber outflow is subsonic at some regions, chamber length change has a significant effect on the engine performance and flow field. The results point out that increasing the chamber length in low injection pressure and high injection pressure leads to increasing and decreasing the height of detonation front, respectively.

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APA: Copy

FARAHANI, MOHAMMAD, & BADRGOLTAPEH, MOHAMMAD. (2016). NUMERICAL STUDY OF A DETONATION WAVE STRUCTURE IN ANNULAR CHAMBER. MODARES MECHANICAL ENGINEERING, 16(7), 343-352. SID. https://sid.ir/paper/178307/en

Vancouver: Copy

FARAHANI MOHAMMAD, BADRGOLTAPEH MOHAMMAD. NUMERICAL STUDY OF A DETONATION WAVE STRUCTURE IN ANNULAR CHAMBER. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(7):343-352. Available from: https://sid.ir/paper/178307/en

IEEE: Copy

MOHAMMAD FARAHANI, and MOHAMMAD BADRGOLTAPEH, “NUMERICAL STUDY OF A DETONATION WAVE STRUCTURE IN ANNULAR CHAMBER,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 7, pp. 343–352, 2016, [Online]. Available: https://sid.ir/paper/178307/en

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