Abstract
We study the binary reaction between an ambient species and a species emitted from a point source in the form of a plume. The concentration of both species is simulated in a neutral boundary layer with help of large-eddy simulation. The contribution of subgrid-scale segregation of the reactants is taken into account by using second-order closure technique for the subgrid-scale covariance. For the slow reaction case the model results agree with wind tunnel experiments. The calculations reveal that subgrid-scale segregation is important for relatively fast reactions, for example the reaction between NO and O3. Regions of high subgrid-scale segregation are located in the vicinity of the source and near the plume edge. In general, the subgrid contribution to the segregation reduces the mean reaction rate.
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© 1997 Springer Science+Business Media Dordrecht
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Meeder, J.P., Nieuwstadt, F.T.M. (1997). Subgrid-Scale Segregation of Chemically Reactive Species in a Neutral Boundary Layer. In: Chollet, JP., Voke, P.R., Kleiser, L. (eds) Direct and Large-Eddy Simulation II. ERCOFTAC Series, vol 5. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5624-0_28
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DOI: https://doi.org/10.1007/978-94-011-5624-0_28
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