Reduced Mechanism Approach of Modeling Premixed Propane-Air Mixture using Ansys Fluent

Authors

  • Lucky Anetor Nigerian Defence Academy
  • Edward Osakue Texas Southern University
  • Christopher Odetunde Texas Southern University

DOI:

https://doi.org/10.4186/ej.2012.16.1.67

Keywords:

Combustion, reduced mechanism, turbulent kinetic energy, fuels, pollution and health, safety, defense and space.

Abstract

In computational analysis of combustion, reduced mechanisms are often used in place of detailed kinetic chemistry because the computational costs of including all the species in the reactor model are always prohibitively high; for this reason, many different reduced mechanisms have been developed for hydrocarbon oxidation. In this study we employed ANSYS Fluent Computational Fluid Dynamics (CFD) package, (hereinafter referred to as Fluent) to analyze propane oxidation mechanism in a conical reactor. The model employed for this work is based on the results of Westbrook and Dryer [15]. This simplified model consists of 5 chemical reactions and 12 species, namely, C3H8, CO2, CO, H2O, NO, O2, O, H, N, OH, N2 and H2. The computed mass fractions of the species, C3H8, CO2, CO and H2O were found to be in qualitative agreement with measured values presented in [26]. The results of the present study show that the bulk of the turbulent kinetic was produced in the inlet jet. The turbulent viscosity was found to be an excellent â€mixer†of the species. The computed results of y* were found to confirm that the use of the law-of-the-wall functions was valid and it also showed that the computational mesh used was adequate for resolving the flow dynamics in the near wall region.

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Author Biographies

Lucky Anetor

Department of Mechanical Engineering, Nigerian Defence Academy, Kaduna, Nigeria

Edward Osakue

Department of Industrial Technology, Texas Southern University, Houston, Texas, USA

Christopher Odetunde

Department of Aviation Science and Technology, Texas Southern University, Houston, Texas, USA

Published

Vol 16 No 1, Nov 8, 2011

How to Cite

[1]
L. Anetor, E. Osakue, and C. Odetunde, “Reduced Mechanism Approach of Modeling Premixed Propane-Air Mixture using Ansys Fluent”, Eng. J., vol. 16, no. 1, pp. 67-86, Nov. 2011.