Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31108
A Numerical Study of the Effect of Side-Dump Angle on Fuel Droplets Sizing in a Three- Dimensional Side-Dump Combustor

Authors: M. Mojtahedpoor, M. M. Doustdar

Abstract:

A numerical study on the effect of side-dump angle on fuel droplets sizing and effective mass fraction have been investigated in present paper. The mass of fuel vapor inside the flammability limit is named as the effective mass fraction. In the first step we have considered a side-dump combustor with dump angle of 0o (acrossthe cylinder) and by increasing the entrance airflow velocity from 20 to 30, 40 and 50 (m/s) respectively, the mean diameter of fuel droplets sizing and effective mass fraction have been studied. After this step, we have changed the dump angle from 0o to 30o,45o and finally 60o in direction of cylinderand also we have increased the entrance airflow velocity from 20 up to 50 (m/s) with the amount of growth of 10(m/s) in each step, to examine its effects on fuel droplets sizing as well as effective mass fraction. With rise of entrance airflow velocity, these calculations are repeated in each step too. The results show, with growth of dump-angle the effective mass fraction has been decreased and the mean diameter of droplets sizing has been increased. 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.

Keywords: KIVA-3V, Side-Dump combustor, Droplets sizing, Side-Dump angle

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1086033

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1360

References:


[1] M. Mojtahedpoor, Effects of Injection Velocity and Entrance Air Flow Velocity on Droplet Sizing in a Duct, world academy of science, technology and engineering journal, March 2011.
[2] M. M. Doustdar, M. Mojtahedpoor, A Numerical Study on the Effects of Injection Spray Cone and Pressure on Propulsive Droplets in A Ramjet, World Academy of Science, Engineering and Technology Journal, pp. 383-386, April 2011.
[3] 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, New Delhi, India, March 2011.
[4] M. M. Doustdar, M. Mojtahedpoor, A Numerical Study on the Effects of Fuel Injection Angle and Injection Velocity on Propulsive Droplets Sizing in a Duct, Singapore, 2011.
[5] T. H. Ko,A Numerical Study on the Effects of Side-Inlet Angle on the Mixing Phenomena in A Three-Dimensional Side-Dump Combustor, International Communications In Heat And Mass Transfer, Vol 33, Issue 7, pp. 853-862, August 2006.
[6] T.H. Ko, Three-Dimensional Fuel-Air Mixing Phenomena in A Side- Dump Combustor: A Numerical Study, International Communications in Heat And Mass Transfer, Vol 32, Issue 10, pp. 1360-1374, November 2005.
[7] M. M. Doustdar, M. Mojtahedpoor, A Numerical Study of the Effect of Injection Velocity on Fuel Droplets Sizing In A Three-Dimentional Side- Dump Combustor, Applied Mechanics And Materials, Vol 52-54, pp. 2045-2050, March 2011.
[8] A. Amsden, P. J. O-Rourke, T. D. Butler, KIVA-II: A Computer Program for Chemically Reactive Flows with Sprays, Los Alamos National Laboratory Report, LA-11560-MS, May 1989.