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Contributions of atomization to F-1 engine combustion instabilities

机译:雾化对F-1发动机燃烧不稳定性的贡献

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摘要

Numerical simulations have been performed to assess the nonlinear, unsteady behavior of fuel jets emanating from an injector in the presence of a transverse (tangential) acoustic wave. Conditions for the simulations have been set to pertain to injector designs used during the development of the F-1 liquid rocket engine. Results indicate that injector designs which were unstable have substantial coupling between the acoustic wave and the natural frequency of oscillation of the fuel column emanating from the orifice. This instability scenario is discussed in the context of other theories offered as explanation for F-1 instabilities.
机译:已经进行了数值模拟,以评估在存在横向(切向)声波的情况下从喷油器喷出的燃料射流的非线性,不稳定行为。已经为在F-1液体火箭发动机的开发过程中使用的喷射器设计设定了模拟条件。结果表明,不稳定的喷油器设计在声波和从节流孔喷出的燃料柱的固有振动频率之间具有实质性的耦合。在提供作为F-1不稳定性解释的其他理论的背景下讨论了这种不稳定性情况。

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