Author(s)

M.A.C. Teixeira & P.M.A. Miranda

Abstract

Development of an integral model for the dispersion of hot and moist gases M.A.C. Teixeira, P.M.A. Miranda Centra de Geofisica da Universidade de Lisboa, Rua da Escola Politecnica, 58, 1250 Lisboa, Portugal Abstract Buoyant plumes can be simulated with reasonable accuracy and simplicity using integral models. This paper attempts to analyze some aspects of buoyant plume dispersion using one of the most sophisticated integral models available, developed by Schatzmann. The model is studied in some detail and compared to a slightly different version, proposed by Davidson. It is found that differences put in the establishment of the two models lead to significant changes in the plume behaviour. Some modifications to Schatzmann's model are suggested, in which sheared wind, radiation, moisture and phase transitions are taken into account. Finally, an alternative, simpler, turbulence closure is proposed for the parametrization of entrainment, which is the strongest const

Keywords