Liquid Ammonia injection on single hole injector: effect of initial conditions on flash boiling process
Résumé
Due to its low boiling point, liquid ammonia is very sensitive to flash boiling phenomenon when the injection into a chamber is done in an ambient pressure below the saturation pressure. The characteristics of superheated ammonia spray on a well-established single-hole injector have been experimentally investigated. Different fuel temperatures and ambient densities are considered to cover a wide range of superheat degree. It was found that the spray geometry and morphology are very sensitive to the superheat degree: the angles near the injector and at half of the penetration length increase with the superheat degree. An opposite trend in air density and superheat degree on the spray penetration has been identified. Finally, the cooling effect due to the flash boiling process was characterized.
Domaines
Milieux fluides et réactifs
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ILASS-europe-2023-paper-anthony-desclaux_17_05_23.pdf (2.84 Mo)
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