Naslov
Modelling of mixing processes in stratified sea-water aquatic environment

Autori
Ravlić, Nenad

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Water Management & Hydraulic Engineering / Petraš, Josip - Zagreb : Građevinski fakultet Sveučilišta u Zagrebu, 1998, 285-297

Skup
International Symposium on Water Management and Hydraulic Engineering

Mjesto i datum
Dubrovnik, Hrvatska, 14.09.1998. - 18.09.1998

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
stratified fluid; mixing processes; 3-D hydrodynamics modelling

Sažetak
Mixing processes that occur in natural coastal aquatic environments are representing the phenomenon that is commonly analysed on macroscopic level for engineering purposes. As in most engineering applications the resolution of mathematical model describing the flow of water doesn't enable the explicit description of processes occurring at sub-grid scale it is necessary to perform parameterisation of such processes or to model them separately. (turbulent transport e.g.). Those processes are not only important for macroscopic flow description but for description of mixing process itself, occurring between two fluids of different characteristics (sea water of different density, sea and waste water e.g.). This paper presents some preliminary results obtained by 3-D hydrodynamic model applied to situation where water is moved by density gradient currents and wind force. One situation recorded in Rijeka Bay is briefly described and qualitative comparison between modelled results and experimental data is presented. Conclusions regarding applicability of eddy viscosity model based on Smagorinsky's formulation of turbulent viscosity were drawn.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA