Izvorni znanstveni članak
Simulation of Smoke Motion in Fire of the Ship Engine Room with Multilayer Structure
Liang Wang
; School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang Jiangsu, China
Shichuan Su
; School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang Jiangsu, China
Sažetak
The article at the beginning defi nes multilayer and monolayer structure based on the structural characteristics of ship engine room. The smoke fi lling motions in multilayer and monolayer structures are studied by employing fi ltered balance equations and the Smagorinsky subgrid-scale model. The article investigates the distribution of smoke with iso-concentration and the height of smoke layer. The research indicates that the spread speed and the spread area of smoke in the
multilayer structure are greater than in the monolayer structure. The height variation of smoke layer is non-continuous in the multilayer structure and continuous in monolayer structure. The height of smoke layer decreased slowly within zone 1 in the multilayer structure, but the smoke fi lls the zone 1 more quickly in the monolayer structure. The examples demonstrate that the shortcomings of the structural hypothesis in traditional method badly affect the research results. The article suggests improvements for research of fi res in ship.
Ključne riječi
fire; multilayer structure; ship engine room; smoke fi lling; the large eddy simulation
Hrčak ID:
75669
URI
Datum izdavanja:
7.12.2011.
Posjeta: 1.344 *