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Numerical Investigation of a Nested Double Annular Combustion Chamber Configuration for Rotating Detonation Engine Applications Cover

Numerical Investigation of a Nested Double Annular Combustion Chamber Configuration for Rotating Detonation Engine Applications

Open Access
|Mar 2026

Figures & Tables

Fig. 1.

Diagram of an annular combustion chamber [1].

Fig. 2.

Diagram of a conventional dual-chamber engine (left) and a nested engine (right).

Fig. 3.

Diagram of a conventional dual-chamber engine (left) and a nested engine (right).

Fig. 4.

Relationship between chamber pressure and mass flux.

Fig. 5.

Two-dimensional computational fluid domain for Model C.

Fig. 6.

Mesh for Model C.

Fig. 7.

Velocity at the nozzle exit with varying cell sizes.

Fig. 8.

Combustion chamber data collection points represented with two lines.

Fig. 9.

Mach distribution of Model A.

Fig. 10.

Mach distribution of Model B.

Fig. 11.

Mach distribution of Model C.

Fig. 12.

Mach distribution of Model D.

Fig. 13.

Mach distribution of Model C'.

Fig. 14.

Mach distribution of Model D'.

Initial Conditions_

turbulence modelrealizable k-ε
materialwater vapor (ideal gas)
steel
inlet A, BC, DCʹ, Dʹ
mass flow rate[kg/s]0.120.120.17
temperature[K]3337.843297.203337.84
pressure[kPa]700525700
outlettemperature[K]300
pressure[kPa]101.325
Language: English
Page range: 107 - 120
Submitted on: May 30, 2025
Accepted on: Feb 6, 2026
Published on: Mar 18, 2026
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2026 Rin Okada, Edyta Dzieminska, Michał Kawalec, Wenjing Cao, published by ŁUKASIEWICZ RESEARCH NETWORK – INSTITUTE OF AVIATION
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.