A Numerical Study of the Effect of Pressure on Propulsive Droplets Sizing in a Duct by KIVA-3V Code

Abstract:

The size of fuel propulsive droplets is one of the effective parameter in improvement of the mixture of air and fuel as well as combustion. The effects of Pressure on the average diameter of fuel propulsive droplets sizing and effective mass fraction in a duct are numerically investigated in the present paper. We named the mass of fuel vapor inside the flammability limit as the efficient mass fraction. The inlet pressure of entrance airflow is varied as 1, 2, 3, 4 and 5 (atm) to examine its effects on the fuel droplets and fuel/air mixing phenomena. As well, by growing the entrance air flow velocity from 36 to 50 (m/s) we have repeated this test again, which provides worthwhile information for the combustor design work. To fulfill the calculations a modified version of KIVA-3V code which is a transient, three-dimensional, multiphase, multicomponent code for the analysis of chemically reacting flows with sprays, is used.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 4527-4531
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.4527
• Online since: October 2011
• Authors: Mohammad Mahdi Doustdar, Mohammad Mojtahedpoor
• Keywords: Droplet Sizing, Effective Mass Fraction, KIVA-3V Code, Pressure, Ramjet

References

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[2] A. Amesden, P. J. O'rourke, T. D. Butler, KIVA-II: A computer program for chemically reactive flows with spray, Los Alamos national laboratory report, LA-11560, May1989.

[3] M. M. Doustdar, M. Mojtahedpoor, A Numerical Study on the Effects of Injection Spray Cone and Pressure on Propulsive Droplets in a Ramjet, 10th Iran aerospace society conference, March 1-2, 2011, Tarbiat Modares University, Tehran, Iran.

[4] M. M. Doustdar, M. Mojtahedpoor A Numerical Study on the Effect of Injection Velocity on Fuel Droplets Sizing in a Three-Dimensional Side-Dump Combustor, Applied Mechanics and Materials journal(Volumes 52 -54), 2045-2050, March, (2011).

DOI: 10.4028/www.scientific.net/amm.52-54.2045

[5] M. M. Doustdar, M. Mojtahedpoor, M Wadizadeh, Effects of Injection Initial Conditions and Length-to-Diameter Ratio on Fuel Propulsive Droplets Sizing in a Duct, International Conference on Mechanical and Aerospace Engineering, March 19-20, 2011, New Delhi, India.

DOI: 10.4028/www.scientific.net/amm.110-116.1784