Modeling of an efficient airblast atomizer for liquid jet into a supersonic crossflow

Almanzalawy, Mohamed S.; Rabie, Lotfy; Mansour, Mohamed H.

doi:10.1016/j.actaastro.2020.07.031

Cited by 17 publications

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An Euler-Lagrange method based on the KH-RT breakup model was used by Niu [25] to explore LJIC atomization, and it was found that the penetration was sensitive to the nozzle diameter, injection velocity, and mass flow rate. Almanzalawy [26] found that liquid jets with a core air flow and annular air flow could improve the spray breakup rate and spray size by employing a DDES model. With the help of the CLSVOF method, it was found by Zhu [27] that the pulsed liquid jet could promote atomization and jet-crossflow mixing performance, which was reflected in a 20% penetration increment and a 25% wake zone increment.…”

Section: Introductionmentioning

confidence: 99%

Investigations of the Atomization Characteristics and Mechanisms of Liquid Jets in Supersonic Crossflow

Zhou,

Chang,

Shan

2023

Aerospace

View full text Add to dashboard Cite

In the combustion chamber of scramjets, fuel jets interact with supersonic airflow in the form of a liquid jet in crossflow (LJIC). It is difficult to achieve adequate jet–crossflow mixing and the efficient combustion of fuel in an instant. Large eddy simulation (LES), the coupled level-set and volume of fluid (CLSVOF) method, and an adaptive mesh refinement (AMR) framework are used to simulate supersonic LJICs in this article. This way, LJIC atomization characteristics and mechanisms can be further explored and analyzed in detail. It is found that the surface waves of the liquid column exist in a two-dimensional form, including vertical and spanwise directions. Column breakup occurs when all the spanwise surface waves between adjacent vertical surface waves break up. Bow shock waves, composed of multiple connected arcuate shock waves, are dynamic and will change with the evolution of the liquid column. The vortex ring movement of supersonic LJICs, whose trends in the vertical and spanwise directions are different, is relatively complex, which is due to the complex and time-dependent shape of liquid columns.

show abstract

Section: Introductionmentioning

confidence: 99%