Atomization of liquid pulsed jet in subsonic crossflow
Source abstract
Abstract
Pulsed jet is an effective solution to improve fuel jet penetration depth and consequently increase the mixing efficiency of gas–liquid in conventional combustion chambers. This has the benefits of reducing pollutant emissions and diminishing the instability of fuel combustion. However, the atomization process of pulsed jets with small amplitude has still not been properly investigated. This paper studies such a process through Large Eddy Simulation and a Coupled Level Set and Volume of Fluid method. We investigate the atomization process in a liquid pulsed jet with a subsonic crossflow and the impact of the Strouhal number on atomization morphology and the behavior of the pulsed jet in general. Results show that, with a constant mass flow rate, the role of Rayleigh–Taylor instability is replaced by the periodic fluctuation of the jet velocity, which ends up dominating the primary process of atomization of the liquid transverse pulsed jet. This also improves atomization, in general, and the fragmentation of the jet. We also show that the Strouhal number significantly impacts the penetration depth of the jet, with high values increasing penetration by up to 12%.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Fluid Dynamics and Heat Transfer · Particle Dynamics in Fluid Flows · Combustion and flame dynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Mechatronic Engineering, North University of China 1 , Taiyuan 030051, China
Institute of Intelligent Weapon, North University of China 2 , Taiyuan 030051, China
Jiangnan Industries Group CO., LTD. 3 , Xiangtan 411207, China
Jinxi Industrial Group Co., Ltd 4 , Taiyuan 030027, China
Funding
Aviation Science Foundation · Fundamental Research Program of Shanxi Province · Foundation for Innovative Research Groups of the National Natural Science Foundation of China
References (48)
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