Numerical Simulation on Effects of Flow Parameters on Supercritical Injection Characteristics

FAN Zhencen; FAN Wei

doi:10.7527/S1000-6893.2013.0191

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2013 , Vol. 34 >Issue 5: 1018 - 1027

DOI: https://doi.org/10.7527/S1000-6893.2013.0191

Fluid Mechanics and Flight Mechanics

Numerical Simulation on Effects of Flow Parameters on Supercritical Injection Characteristics

FAN Zhencen ,
FAN Wei

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School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China

Received date: 2012-06-18

Revised date: 2012-08-26

Online published: 2012-09-05

Supported by

National Natural Science Foundation of China (50976094)

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Abstract

Currently, the design of atomization systems for combustors of aircraft engines is generally made for subcritical injection conditions. However, most of the injections will be supercritical or transcritical in future advanced aircraft for higher performance requirements. Therefore, this paper investigates the supercritical injection characteristics of liquid hydrocarbon fuel. Firstly, a numerical model incorporating the physical properties calculation method of supercritical fluid is developed for studying supercritical injection characteristics. The model is then employed for numerical investigations for the injection of JetA into N₂. The calculated results are compared and validated against the available experimental data, showing an excellent agreement. The effects of flow parameters on supercritical injection characteristics are also studied with the numerical model and the variations of the injection length and jet spreading angle with flow parameters are obtained.

Key words： aircraft engine; supercritical injection; liquid hydrocarbon fuel; numerical simulation; injection characteristic; flow parameter

Cite this article

FAN Zhencen , FAN Wei . Numerical Simulation on Effects of Flow Parameters on Supercritical Injection Characteristics[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013 , 34(5) : 1018 -1027 . DOI: 10.7527/S1000-6893.2013.0191

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