New developments to the post-processor in determining nitrogen oxide emissions with an computationally efficient approach

Swaminathan, Senthilathiban; Spijker, Christoph; Raupenstrauch, Harald; Kofler, Irmela; Koller, Michael

doi:10.1016/j.crcon.2020.12.004

Cited by 2 publications

(4 citation statements)

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“…Hence, a two-step model was developed which uses a computationally cheap flamelet model to predict the flame parameters such as temperature and flow field, which are then transferred to the developed postprocessor containing a detailed chemistry mechanism, which solves only the species transport equation to predict nitrogen oxide emissions. Because the model has been well described in previous publications [19,[23][24][25][26][27], only a brief overview is presented here.…”

Section: Methodsmentioning

confidence: 99%

“…An in-house postprocessor was developed at the Chair of Thermal Processing Technology [19,26,27]. The NO x postprocessor used the data from the flamelet model, in which all the species involved in the NO formation path were disregarded and only the transient species transport equation was solved with a detailed GRI 3.0 mechanism.…”

Section: Model Descriptionmentioning

confidence: 99%

“…The model successfully estimated NO x emissions at 63 ppm, closely aligning with the measured data of 65 ppm. For more information on the validation of the numerical model, the reader is referred to [19,26,27].…”

Section: ∂(ρYmentioning

confidence: 99%

“…Figure 1.Comparison of simulation and experimental data along the axis of the burner, with the temperature obtained from the Flamelet model and the NO mass fraction determined from the NO X post-processor[18,19,26].…”

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confidence: 99%

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Numerical Simulation and Performance Evaluation of Hydrogen-Enriched Natural Gas for an Industrial Burner in a Testing Chamber

Swaminathan,

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et al. 2023

Energies

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A two-step numerical concept was developed for modelling combustion and predicting nitrogen oxide emissions. The model was validated by the Sandia flame D experiment and with measurement data from burners on industrial furnaces. In this paper, the developed model was implemented to evaluate the influence of hydrogen blending with natural gas up to 40 vol.% on an industrial burner with oxidizer temperatures at 300 K and 813 K to assess the performance of the burner without altering the power output of the burner. An experimental test facility is under construction, and the feasibility of using this industrial burner on the test facility with different fuel mixtures was analyzed. Temperature, flow field, and emission characteristics were investigated. Using 40 vol.% hydrogen with natural gas resulted in a decrease of 14.82% in CO2 emissions and an increase of in 16.1% NO emissions when combusted with air at 300 K. The temperature profile indicated that the burner produces a symmetrical flame profile with preheated air and an asymmetrical flame profile with ambient air.

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