Dynamics of Pulsed Jet in Crossflow

Author:

Arienti M.1,Soteriou M. C.1

Affiliation:

1. United Technologies Research Center, East Hartford, CT

Abstract

We examine the effect of time-dependent forcing on jet-in-crossflow atomization in the case of pulsed liquid injection and uniform crossflow. The dynamics of the jet is captured by a numerical approach that blends interface tracking of the liquid surface with an empirical description of the atomization process. The unsteady Reynolds-Averaged Navier-Stokes equations for the gas and the continuous (i.e., preceding breakup) liquid phase are solved simultaneously with the Lagrangian equations for the droplet trajectories. This approach captures the near field transient due to the opening (closing) of the fuel valve, as well as the convective delay of the spray in the far field. Validation is carried out with Phase Doppler Interferometry (PDI) and Mie scattering measurements at standard conditions for pulsed jets of water and ethanol in crossflow air. The discussion is focused on the shape of the convecting spray pulse and on the trends due to variations in crossflow and jet velocities.

Publisher

ASMEDC

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Assessing parameters in liquid film formation;Journal of the Brazilian Society of Mechanical Sciences and Engineering;2023-12-10

2. Lagrangian Numerical Analysis of Liquid Jet in Subsonic Crossflow;AIAA Scitech 2020 Forum;2020-01-05

3. Numerical simulation of a water droplet splash: Effects of density interpolation schemes;Mechanics Research Communications;2018-06

4. Modeling Wall Film Formation and Breakup Using an Integrated Interface-Tracking/Discrete-Phase Approach;Journal of Engineering for Gas Turbines and Power;2010-11-10

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