Zhang Pan, Li Zhen, Abdollahi Seyyed Amirreza
School of Mechanical Engineering, Sichuan University Jinjiang College, Pengshan, 620860, Sichuan, China.
Department of Automotive Engineering, Sichuan Vocational and Technical College of Communications, Chengdu, 611130, Sichuan, China.
Sci Rep. 2024 Jul 10;14(1):15959. doi: 10.1038/s41598-024-66309-1.
The present investigation examines the usage of rectangular multi-injectors for fuel injection in a supersonic combustion chamber. To evaluate the fuel jet penetration and distribution, a computational method is applied to model the supersonic compressible flow with cross multi-fuel jets released from annular rectangular nozzles with different nozzle configurations. The main effort of this work is to evaluate the jet interactions in the existence of cross-supersonic flow. Fuel jet penetration and distribution are evaluated for three proposed injector arrangements to attain the more efficient option for better fuel mixing. Our results show that reducing injector space improves fuel mixing inside the combustor via creation of strong vortices. Beside, injection of air from internal nozzle increase fuel interactions and fuel mixing inside combustion chamber.
本研究考察了矩形多喷嘴在超音速燃烧室中用于燃料喷射的情况。为了评估燃料射流的穿透和分布，应用一种计算方法对从具有不同喷嘴构型的环形矩形喷嘴喷出的交叉多燃料射流的超音速可压缩流进行建模。这项工作的主要努力方向是评估交叉超音速流存在时的射流相互作用。针对三种提出的喷嘴布置方案评估燃料射流的穿透和分布，以获得更高效的方案来实现更好的燃料混合。我们的结果表明，减小喷嘴间距可通过产生强涡旋来改善燃烧室内的燃料混合。此外，从内部喷嘴注入空气可增强燃烧室内的燃料相互作用和燃料混合。
