Numerical Simulation of Thermodynamic Parameters during Diffusion Combustion for Vehicle Air Heater

Pei Yong Ni; Xiang Li Wang; Sheng Li Wei

doi:10.4028/www.scientific.net/AMM.80-81.783

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 80-81Numerical Simulation of Thermodynamic Parameters...

Numerical Simulation of Thermodynamic Parameters during Diffusion Combustion for Vehicle Air Heater

Abstract:

The diffusion combustion of the air heater was numerically simulated at different excess air coefficient using Fluent software. The distributions of the temperature, gas flow velocity, and turbulence intensity were present. And the heat flux was calculated. The result showed that the excess air coefficient had a little effect on the maximum combustion temperature distribution. As the excess air coefficient increased, the axial temperature at first increased and then decreased, and in contrast both the total heat flux and radiation heat flux decreased. The radial temperature, velocity and turbulence intensity increased firstly and then decreased at the same operation condition. The measured exhaust temperature increased with time. At 90 second, it was about 250 °C, which showed good agreement with simulation result. This provides theory basis for the reform of the heater.

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Periodical:

Applied Mechanics and Materials (Volumes 80-81)

Pages:

783-787

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.80-81.783

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Online since:

July 2011

Authors:

Pei Yong Ni, Xiang Li Wang, Sheng Li Wei

Keywords:

Air Heater, Diffusion Combustion, Heat Flux, Numerical Simulation

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