What is it about?
In liquid fueled engines and other power generation systems, combustion efficiency and emissions are directly related to the characteristics of the fuel injection process. The injection of a liquid fuel into a gaseous crossflow has been found to be one of the most effective methods at rapidly mixing and generating a spray. Due to the complex interaction between the gaseous and liquid phases, literature has primarily focused on the simplified scenario of liquid jet behavior in a uniform crossflow. However, the scenario of a turbulent crossflow has not received the same attention. The present study is an attempt to understand how a turbulent crossflow influences the primary breakup characteristics of a liquid jet.
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Why is it important?
The results revealed that the crossflow turbulence has a significant impact on the jet breakup characteristics. For instance, the instantaneous Weber number range increases with turbulence, allowing multiple breakup regimes to occur simultaneously. Crossflow turbulence influence dominates the far-field liquid jet trajectory. A correlation for predicting the liquid jet trajectory was developed in terms of the momentum flux ratio, jet Reynolds number and turbulence intensity.
Perspectives
I hope this article will attract the attention of many people in the academia and industry.
Madjid Birouk
University of Manitoba
Read the Original
This page is a summary of: Liquid jet breakup in a subsonic cross airflow: An experimental study of the effect of the gas phase turbulence, Experimental and Computational Multiphase Flow, November 2023, Tsinghua University Press,
DOI: 10.1007/s42757-023-0166-x.
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