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| Numerical simulation of thermal fluid in partially open enclosures based on Vreman subgrid-scale model |
| Received:December 02, 2011 Revised:May 18, 2012 |
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| DOI：10.7511/jslx201301020 |
| KeyWord:Vreman subgrid-scale model partially open enclosure thermal fluid large eddy simulation |
| Author | Institution |
| 霍岩 |
哈尔滨工程大学 航天与建筑工程学院,哈尔滨 |
| 郜冶 |
哈尔滨工程大学 航天与建筑工程学院,哈尔滨 |
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| Abstract: |
| Numerical simulations on thermal flow field in a room and two adjoining rooms are carried out by means of the large eddy simulation based on Vreman subgrid-scale model.Results of simulation are evaluated by functional analysis.And results given by Vreman subgrid-scale model are compared with results given by Smagorinsky subgrid-scale mode.It is indicated that two models both give acceptable results in engineering.However,temperature and U velocity calculation results obtained by Vreman subgrid-scale model are closer to experimental values than obtained by Smagorinsky subgrid-scale model in regions near the opening.Vreman subgrid-scale model do not overestimate the coefficient of viscosity for hot gases zone near the wall as Smagorinsky subgrid-scale model do.The accuracy of computation result obtained by Vreman subgrid-scale model is 50% higher than that of Smagorinsky subgrid-scale model for hot smoke layer in a compartment with partially opening. |