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Large eddy simulation of buoyancy-driven natural ventilation-twin-plume flow
journal contribution
posted on 2017-07-27, 14:58 authored by Faisal Durrani, Malcolm CookMalcolm Cook, Jim McGuirk, N.B. KayeThis paper presents results of a Large Eddy Simulation (LES) of buoyancy-driven natural ventilation in which two unequal heat sources are used to drive the flow. The aim of this work was to assess the performance of LES in modelling turbulent thermal plumes in a naturally ventilated enclosure and to analyse their interaction with each other. The sub-grid scales of the flow have been resolved by using the Smagorinsky sub-grid scale model. It was found that LES results for the interface height agree well with the theoretical predictions of Linden and Kaye (2006). However, instead of a step change in temperature, as suggested by theory, there exists a more diffuse interface. The merging height of the two plumes and the volume flow rates in the far field merged plume agreed closely with theoretical predictions. Analysis of the pressure isosurfaces demonstrated the interaction phenomena of the two plumes, the coherent structures and the behaviour of the interface.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Published in
International Journal of VentilationVolume
11Issue
4Pages
353 - 366Citation
DURRANI, F. ... et al., 2013. Large eddy simulation of buoyancy-driven natural ventilation-twin-plume flow. International Journal of Ventilation, 11 (4), pp. 353 - 366.Publisher
© Taylor & FrancisVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2013Notes
Closed accessISSN
1473-3315Publisher version
Language
- en