TY - GEN
T1 - Research on the Propagation Characteristics of Pulse Detonation Waves in Fan-Shaped Tube
AU - Zeng, Han
AU - Zheng, Long Xi
AU - Jing, Xin
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2027.
PY - 2027
Y1 - 2027
N2 - The fan-shaped pulse detonation combustor (PDC) can enhance the cross-sectional utilization of multi-tube pulse detonation engines and improve the performance of pulsed detonation engine. However, compared with the traditional circular cross-section PDC, the formation and propagation characteristics of the detonation wave in the fan-shaped cross-section PDC have changed. In order to study the working characteristics of the fan-shaped PDC, the three-dimensional calculation model for the fan-shaped PDC was established. Using the three-dimensional numerical simulation method, the initiation process of the single-tube fan-shaped cross-section PDC was calculated, and the generation and propagation characteristics of the internal detonation waves were analyzed. The research results show that in the fan-shaped PDC, the propagation mode of the detonation is quite different from that of the circular straight pipe PDC. Due to the curvature change of the fan-shaped cross-section, the wave surface of the detonation wave is no longer perpendicular to the PDC wall, and the wave surface takes on a concave butterfly shape. The upper arc surface flame speed is comparable to that of the side surface flame and is higher than that of the lower arc surface. The propagation process of the detonation wave is a gradual shift from the upper arc surface to the lower arc surface, and finally stabilizes at a tilted state in the middle. Furthermore, there is a gradient of pressure along the circumferential direction within the fan-shaped cross-section PDC. The peak pressure on the lower arc side can be 14% higher than that on the upper arc side.
AB - The fan-shaped pulse detonation combustor (PDC) can enhance the cross-sectional utilization of multi-tube pulse detonation engines and improve the performance of pulsed detonation engine. However, compared with the traditional circular cross-section PDC, the formation and propagation characteristics of the detonation wave in the fan-shaped cross-section PDC have changed. In order to study the working characteristics of the fan-shaped PDC, the three-dimensional calculation model for the fan-shaped PDC was established. Using the three-dimensional numerical simulation method, the initiation process of the single-tube fan-shaped cross-section PDC was calculated, and the generation and propagation characteristics of the internal detonation waves were analyzed. The research results show that in the fan-shaped PDC, the propagation mode of the detonation is quite different from that of the circular straight pipe PDC. Due to the curvature change of the fan-shaped cross-section, the wave surface of the detonation wave is no longer perpendicular to the PDC wall, and the wave surface takes on a concave butterfly shape. The upper arc surface flame speed is comparable to that of the side surface flame and is higher than that of the lower arc surface. The propagation process of the detonation wave is a gradual shift from the upper arc surface to the lower arc surface, and finally stabilizes at a tilted state in the middle. Furthermore, there is a gradient of pressure along the circumferential direction within the fan-shaped cross-section PDC. The peak pressure on the lower arc side can be 14% higher than that on the upper arc side.
KW - Detonation wave propagation
KW - Fan-shaped tube
KW - Numerical simulation
KW - Pulse detonation combustion
UR - https://www.scopus.com/pages/publications/105046712196
U2 - 10.1007/978-981-92-1183-8_12
DO - 10.1007/978-981-92-1183-8_12
M3 - 会议稿件
AN - SCOPUS:105046712196
SN - 9789819211821
T3 - Lecture Notes in Mechanical Engineering
SP - 169
EP - 177
BT - Proceedings of The 2025 Asia-Pacific International Symposium on Aerospace Technology- Proceedings of APISAT 2025
A2 - Suk, Jinyoung
A2 - Lee, Bok Jik
A2 - Jeong, Shinkyu
A2 - Ahn, Kyubok
PB - Springer Science and Business Media Deutschland GmbH
T2 - Asia-Pacific International Symposium on Aerospace Technology, APISAT 2025
Y2 - 27 October 2025 through 29 October 2025
ER -