Assessment of zero-equation SGS models for simulating indoor environment

Javad Taghiniaseyedjalali, Md Mizanur Rahman, Tim K T Tse

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

The understanding of air-flow in enclosed spaces plays a key role to designing ventilation systems and indoor environment. The computational fluid dynamics aspects dictate that the large eddy simulation (LES) offers a subtle means to analyze complex flows with recirculation and streamline curvature effects, providing more robust and accurate details than those of Reynolds-averaged Navier–Stokes simulations. This work assesses the performance of two zero-equation sub-grid scale models: the Rahman–Agarwal–Siikonen–Taghinia (RAST) model with a single grid-filter and the dynamic Smagorinsky model with grid-filter and test-filter scales. This in turn allows a cross-comparison of the effect of two different LES methods in simulating indoor air-flows with forced and mixed (natural + forced) convection. A better performance against experiments is indicated with the RAST model in wall-bounded non-equilibrium indoor air-flows; this is due to its sensitivity toward both the shear and vorticity parameters.

Original languageEnglish
Pages (from-to)2781–2794
Number of pages14
JournalHeat and Mass Transfer
Volume52
Issue number12
Early online date25 Feb 2016
DOIs
Publication statusPublished - Dec 2016
MoE publication typeA1 Journal article-refereed

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