Large eddy simulation of hydrogen auto-ignition with a probability density function method |
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| Authors: | W.P. Jones, S. Navarro-Martinez,O. R hl |
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| Affiliation: | aDepartment of Mechanical Engineering, Imperial College London, London SW7 2AZ, UK |
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| Abstract: | Large eddy simulation is applied to the auto-ignition of a hydrogen jet issuing into a turbulent co-flowing air stream. A 19 step, nine species detailed mechanism is used for reaction. The influence of sub-grid species concentration and temperature fluctuations are accounted for by a sub-grid joint PDF for the reactive scalars, obtained from solution of a modelled transport equation. The method is able to reproduce ignition lengths and different regimes observed experimentally without any adjustment or calibration of the model constants. |
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| Keywords: | Large eddy simulation Joint scalar PDF Hydrogen-air ignition |
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