Development Characteristics of Underwater Detonation Gas Jets in Confined Space

• Published in: 水下无人系统学报 Vol. 32; no. 3; pp. 572 - 581
• Main Authors: Zhiqian XU, Yang KANG, Ning LI, Xiaolong HUANG, Can LI, Chunsheng WENG
• Format: Journal Article
• Language: Chinese
• Published: Science Press (China) 01.06.2024
• Subjects: confined space; pulsation of bubbles; pulsed detonation water ramjet engines; underwater gas jet
• ISSN: 2096-3920
• DOI: 10.11993/j.issn.2096-3920.2023-0104

To explore the development characteristics of gas jets generated by pulsed detonation water ramjet engines working underwater in water deflectors, numerical simulations and experimental validations were conducted on underwater detonation gas jets generated by detonation tube within a cylindrical confined space by utilizing the detonation of combustible gases to generate pulsating bubbles in the underwater confined space. A flow field model of a single gas jet in an underwater confined space was established based on the Reynolds-averaged equations, the k-ε two-equation model, and the gas-liquid interface tracking method of the volume of fluid(VOF) coupled with the phase transportation equation. The Compressible Inter Foam solver in OpenFOAM was employed for numerically solving pulsed detonation gas jets in the confined space. The results show that the influence of confined space on the leading shock wave of underwater detonation is slight, and the amplitude of the leading shock wave changes insignificantly com