A lagrangian dispersion model with a stochastic equation for the temperature fluctuations

Bisignano Andrea, Ferrero Enrico, Alessandrini Stefano, Mortarini Luca

Risultato della ricerca: Contributo alla conferenzaContributo in Atti di Convegnopeer review

Abstract

The hybrid Lagrangian stochastic algorithm for buoyant plume rise from an isolated source described by Bisignano and Devenish (2015) is introduced into the Lagrangian dispersion model SPRAYWEB (Tinarelli et al, 1994, Alessandrini et al. 2013, Bisignano et al., 2017). In our approach each particle carries its own potential temperature, which evolves according to a stochastic differential equation as in Van Dop (1992). The buoyancy is calculated from the particle temperature and is directly included in the equation for the evolution of the velocity through a coupling term. We compare the concentration field simulated by the model with the results of a water tank experiment (Weil et al. 2002).

Lingua originaleInglese
Pagine919-923
Numero di pagine5
Stato di pubblicazionePubblicato - 2017
Pubblicato esternamente
Evento18th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, HARMO 2017 - Bologna, Italy
Durata: 9 ott 201712 ott 2017

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???event.eventtypes.event.conference???18th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, HARMO 2017
Paese/TerritorioItaly
CittàBologna
Periodo9/10/1712/10/17

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