An Investigation on the Effects of Injection Spray Cone on Propulsive Droplets in a Duct
This paper addresses one important aspect of
combustion system analysis, the spray evaporation and
dispersion modeling. In this study we assume an empty
cylinder which is as a simulator for a ramjet engine and the
cylinder has been studied by cold flow. Four nozzles have the
duties of injection which are located in the entrance of
cylinder. The air flow comes into the cylinder from one side
and injection operation will be done. By changing injection
velocity and entrance air flow velocity, we have studied
droplet sizing and efficient mass fraction of fuel vapor near
and at the exit area. We named the mass of fuel vapor inside
the flammability limit as the efficient mass fraction. Further,
we decreased the initial temperature of fuel droplets and we
have repeated the investigating again. To fulfill the calculation
we used a modified version of KIVA-3V.
[1] KIVA-II: A Computer Program for Chemically Reactive Flows with
Sprays, Los Alamos, National laboratory.
[2] S. R. Turns, An introduction to Combustion Concepts and Applications,
Second edition, Chapter 10 ,369-410 (2000).
[3] G. L. Hubbard, V. E. Denny and A. F. Mills, Droplet Evaporation:
Effects of Transiments and Variable Properties, University of California,
Los Angeles, CA 90024, U.S.A.
[4] F. R. Newbold and N. R. Amundson. A model for evaporation of a
multi-component droplet, A.Z.Ch.E. JI, 19, 22-30 (1973).
[5] K. Prommersberger, G. Maier, S. Wittig, Validation and Application of a
Droplet Evaporation Model for Real Aviation Fuel.
[6] B. E. Gelfand, Droplet Breakup Phenomena in Flows With Velocity Lag,
Prog. Energy Combust. Sci. Vol. 22. pp. 201-265, 1996.
[7] Salah Addin B. Al-Omari, Numerical simulation of liquid fuel sprays
evolution and the subsequent vapor/air mixture formation in a duct with
a 90┬░-bend, International Communications in Heat and Mass Transfer 35
(2008) 1397-1402.
[8] J. C. Kent, Quasi-steady diffusion-controlled droplet evaporation and
condensation, Appl. Scent. Res., Ser. AD, 315-359 (1973).
[9] A. Williams, Combustion of droplets of liquid fuels: a review, Comber.
Flume 21, l-31 (1973).
[1] KIVA-II: A Computer Program for Chemically Reactive Flows with
Sprays, Los Alamos, National laboratory.
[2] S. R. Turns, An introduction to Combustion Concepts and Applications,
Second edition, Chapter 10 ,369-410 (2000).
[3] G. L. Hubbard, V. E. Denny and A. F. Mills, Droplet Evaporation:
Effects of Transiments and Variable Properties, University of California,
Los Angeles, CA 90024, U.S.A.
[4] F. R. Newbold and N. R. Amundson. A model for evaporation of a
multi-component droplet, A.Z.Ch.E. JI, 19, 22-30 (1973).
[5] K. Prommersberger, G. Maier, S. Wittig, Validation and Application of a
Droplet Evaporation Model for Real Aviation Fuel.
[6] B. E. Gelfand, Droplet Breakup Phenomena in Flows With Velocity Lag,
Prog. Energy Combust. Sci. Vol. 22. pp. 201-265, 1996.
[7] Salah Addin B. Al-Omari, Numerical simulation of liquid fuel sprays
evolution and the subsequent vapor/air mixture formation in a duct with
a 90┬░-bend, International Communications in Heat and Mass Transfer 35
(2008) 1397-1402.
[8] J. C. Kent, Quasi-steady diffusion-controlled droplet evaporation and
condensation, Appl. Scent. Res., Ser. AD, 315-359 (1973).
[9] A. Williams, Combustion of droplets of liquid fuels: a review, Comber.
Flume 21, l-31 (1973).
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:51919", author = "M. Mojtahedpoor", title = "An Investigation on the Effects of Injection Spray Cone on Propulsive Droplets in a Duct", abstract = "This paper addresses one important aspect of
combustion system analysis, the spray evaporation and
dispersion modeling. In this study we assume an empty
cylinder which is as a simulator for a ramjet engine and the
cylinder has been studied by cold flow. Four nozzles have the
duties of injection which are located in the entrance of
cylinder. The air flow comes into the cylinder from one side
and injection operation will be done. By changing injection
velocity and entrance air flow velocity, we have studied
droplet sizing and efficient mass fraction of fuel vapor near
and at the exit area. We named the mass of fuel vapor inside
the flammability limit as the efficient mass fraction. Further,
we decreased the initial temperature of fuel droplets and we
have repeated the investigating again. To fulfill the calculation
we used a modified version of KIVA-3V.", keywords = "Ramjet, droplet sizing, injection velocity, air flowvelocity, efficient mass fraction..", volume = "5", number = "4", pages = "759-4", }