The analysis of scalar dispersion in turbulent flows is relevant for a broad range of applications, including investigation of hazardous releases, bio-terrorism and control of air quality. In the last 50 years, experimental and numerical investigations of canonical flows, such as turbulent boundary layers (Fackrell & Robins 1982) or grid-generated turbulence (Livescu et al. 2000), have enhanced...

Turbulent mixing in buoyant flows is an essential mechanism involved many scenarios related to nuclear safety power plants. Comprehensive understanding and accurate predictions of turbulent the reactor are crucial importance, due function mitigating potential detrimental consequences during postulated accidents. The present study uses URANS methodology investigate buoyancy-influenced pressure v...

This paper presents a computational study of the separated flow in a planer asymmetric diffuser. The steady RANS equations for turbulent incompressible fluid flow and six turbulence closures are used in the present study. The commercial software code, FLUENT 6.3.26, was used for solving the set of governing equations using various turbulence models. Five of the used turbulence models are availa...