Hybrid Methods in Engineering Modeling, Programming, Analysis, Animation

ISSN for PRINT: 1099-2391

For Online Access

Best Paper Award Selection - Editorial Board Site

2000, Volume2

Issue 3

110 pages

Issue price - $125.00

Umberto Rizza
Institute di Scienze dell'Atmosfera e Del Clima of CNR, Strada Provinciale Lecce, Monteroni km. 1.2, 73100 Lecce, Italy

Cristina Mangia
ISIATA/CNR, Strada Provinciale Lecce, Monteroni km. 1.2, 73100 Lecce, Italy

Umberto Giostra
ISIATA/CNR, Strada Provinciale Lecce, Monteroni km. 1.2, 73100 Lecce, Italy

Massimo Cassiani
Environmental Science Department, University ofUrbino, Urbino, Italy

The traditional puff air-quality dispersion model does not consider looping of the plume caused by eddies larger than the instantaneous depth of the cloud. The model presented (SPELL), which simulates the center of mass of each puff as a Lagrangian particle, is able to describe such behavior. The puff expansion is expressed using a model derived from work of Mikkelsen et al. [1]. The Lagrangian trajectories of each particle/center of mass are calculated by following the Luhar and Britter [2] model. Both parts rely on the spectral representation of Degrazia et al. [3]. The model performances have been evaluated against field experimental concentration data. This hybrid modeling approach is a promising technique in the regulatory air pollution context.

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