Paper Title:
Influence of Geometry on the Position and the Intensity of Maximum Kinetic Energy in a Combustion Chamber
  Abstract

We analyzed the hydrodynamics of the flow into an axis-symmetrical combustion chamber with a central bluff body. Using an axis-symmetrical turbulent flow model we determined the extent of the recirculation region behind the bluff body as well as the location and intensity of maximum kinetic energy as a function of the cone angle of the chamber wall. We showed that by shortening the convergent conical section of the chamber we obtain a compact recirculation with higher turbulence intensity, with positive influence on gas mixing. We used the software FLUENT 6.3 for the numerical simulation of the gas flow inside the combustion chamber. The simplified geometry of the two types of combustion chambers was built using the pre-processor GAMBIT 2.4. Two structured meshes were obtained for the domains of numerical analysis with approximately 170,000 cells each. For modelling the turbulence of the flow we used three different turbulence models which were implemented in FLUENT 6.3.

  Info
Periodical
Defect and Diffusion Forum (Volumes 312-315)
Edited by
Andreas Öchsner, Graeme E. Murch and João M.P.Q. Delgado
Pages
725-730
DOI
10.4028/www.scientific.net/DDF.312-315.725
Citation
A. C. Stuparu, S. Holotescu, "Influence of Geometry on the Position and the Intensity of Maximum Kinetic Energy in a Combustion Chamber", Defect and Diffusion Forum, Vols. 312-315, pp. 725-730, 2011
Online since
April 2011
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