Calculation of flow characteristics of liquid fuel supplied through pressure jet atomizers of small-sized gas turbine engines


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Abstract

The paper presents the results of studying the flow characteristics of liquid fuel in pressure jet atomizers of small-sized gas turbine engines with nozzle diameters of 0.4-0.6 mm for various operating and design parameters. The study was carried out using experimental measurements, semi-empirical correlations and CFD (computational fluid dynamics) methods. The Euler approach, the volume- of- fluid (VOF) method, was used to model multiphase flows in CFD simulations. Good agreement was obtained between experimental and predicted data on the fuel coefficient and the primary spray cone angle at the nozzle outlet. Besides, the assessment of the applicability of semi-empirical techniques for the nozzle configurations under consideration is given. In the future, the flow characteristics in question (the nozzle flow rate, the fuel film thickness, and the primary spray cone angle) can be used to determine the mean diameter of the droplets (SMD) required to fully determine the boundary conditions of fuel injection when modeling combustion processes in combustion chambers of small-sized gas turbine engines.

About the authors

N. I. Gurakov

Samara National Research University

Author for correspondence.
Email: nikgurakov@gmail.com
ORCID iD: 0000-0003-4217-0879

Postgraduate Student of the Department of Thermal Engineering and Thermal Engines

Russian Federation

I. A. Zubrilin

Samara National Research University

Email: zubrilin.ia@ssau.ru
ORCID iD: 0000-0001-5876-8571

Candidate of Science (Engineering), Associate Professor of the Department of Thermal Engineering and Thermal Engines

Russian Federation

M. Hernandez Morales

Samara National Research University

Email: mariohernandezmo_4_2@hotmail.com
ORCID iD: 0000-0002-0592-0530

Postgraduate Student of the Department of Thermal Engineering and Thermal Engines

Russian Federation

D. V. Yakushkin

Samara National Research University

Email: yakushkindv@gmail.com

Student

Russian Federation

A. A. Didenko

Samara National Research University

Email: aanm_didenko@rambler.ru

Candidate of Science (Engineering), Associate Professor of the Department of Thermal Engineering and Thermal Engines

Russian Federation

S. G. Matveev

Samara National Research University

Email: msg@ssau.ru

Candidate of Science (Engineering), Professor of the Department of Thermal Engineering and Thermal Engines

Russian Federation

Yu. V. Komisar

Samara National Research University

Email: komisar.yuv@ssau.ru

Design Engineer of the Department of Aircraft Engine Theory

Russian Federation

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