Original scientific paper

An atmospheric gravitational vortex as a flow object: improvement of the three-layer model

Sandro Nižetić

Abstract

An improved physical and analytical three-layer model of gravitational vortex columns (GVCs) for solar chimney power plants is developed in this paper. In essence, this model represents a further improvement and upgrade of the three-layer model proposed in Ninić et al. (2009). The improvements of the three-layer model deal with internal friction, variable vertical velocity (by height) in the central GVC spiraling upward flow, and variable angular momentum of the downdraft shell. A numerical solution of the improved model is given as a characteristic case and is compared to the elementary GVC model. The results show that the introduced improvements are important parameters for further analysis of gravitational vortex columns.

Keywords

Gravitational vortex; solar chimney; numerical modelling

Hrčak ID:

57730

URI

https://hrcak.srce.hr/57730

Publication date:

30.6.2010.

Article data in other languages: croatian

Visits: 1.419 *