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首页> 外文会议>International symposium on jet propulsion and power engineering >Numerical Investigation on RBCC Engine Performance under Ramjet Mode by Using Strut Injection and Fuel-rich Burned Gas Piloting Combustion
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Numerical Investigation on RBCC Engine Performance under Ramjet Mode by Using Strut Injection and Fuel-rich Burned Gas Piloting Combustion

机译：采用支柱注入和富含燃油烧制气体燃烧燃烧燃烧燃烧燃烧燃烧下RBCC发动机性能的数值研究

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摘要

Numerical studies have been performed to investigate liquid kerosene combustion in RBCC combustor under typical ramjet-mode condition. To obtain the high efficiency combustion and optimized performance under low enthalpy incoming airflow condition, investigations on fuel injection schemes based on strut injector associated with fuel-rich burned gas piloting combustion in current RBCC combustor configuration have been performed. The results show that the fuel-strut injection associated with fuelrich burned gas piloting combustion plays a crucial role to achieve steady and efficient combustion under ramjet mode. Moreover, the interactions between the fuel jets injection and the fuel-rich piloting plumes have been identified. By using CFD simulations, the comparisons indicate that the fuel injection from two fuel-strut injector behind the primary rocket exit can accomplish high-efficient combustion due to directly delivering fuel into the core region of piloting flame, thereby leading a high pressure distribution and better engine performance. The results show the injection based on fuel-strut injector is appropriate to take advantage of piloting flame, and further investigations on multistage injection including fuel-strut injection and wall injection upstream the cavity need to be further considered to optimize the engine performance.
机译：已经进行了数值研究，以在典型的拉姆喷射模式条件下研究RBCC燃烧器中的液态煤油燃烧。为了在低焓进入气流条件下获得高效率的燃烧和优化性能，已经进行了基于与富含燃料燃烧的气体的支柱喷射器的燃料喷射方案进行了研究的高效燃烧和优化的性能。结果表明，与燃料燃烧的气体引爆燃烧相关的燃料支柱注射起到在拉姆喷嘴模式下实现稳定高效的燃烧起到至关重要的作用。此外，已经鉴定了燃料喷射喷射和富含燃料的试验羽的相互作用。通过使用CFD模拟，比较指出主要火箭出口后面的两个燃料支柱喷射器的燃料喷射可以实现高效的燃烧，因为直接将燃料输送到导频火焰的核心区域，从而引发高压分布和更好发动机性能。结果表明，基于燃料 - 支柱喷射器的喷射是合适的，用于利用试验火焰，进一步研究包括燃料 - 支柱喷射和上游的壁注射，还需要进一步考虑腔，以优化发动机性能。

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