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Comparison Of Lattice Boltzmann Method And Finite Volume Method With Large Eddy Simulation In Isothermal Room Flow, Mengtao Han, Ryozo Ooka, Hideki Kikumoto
Comparison Of Lattice Boltzmann Method And Finite Volume Method With Large Eddy Simulation In Isothermal Room Flow, Mengtao Han, Ryozo Ooka, Hideki Kikumoto
International Building Physics Conference 2018
Lattice Boltzmann method (LBM), as a new computational fluid simulation method, has aroused widespread attention in recent decades within engineering practice. LBM with large eddy simulation (LBM-LES) model is commonly used in predicting high Reynolds flow, and is considered to have a prediction accuracy similar to traditional finite volume method (FVMLES). Nonetheless, a systematic discussion on the accuracy of LBM-LES, and its consistency with FVM-LES, in indoor turbulent flow situations, is still insufficient. In this study, simulations of an indoor isothermal forced convection benchmark case (from IEA Annex 20) are implemented by using both LBM-LES and FVM-LES, with the aim …
Improving The Representation Of Convective Heat Transfer In An Urban Canopy Model, Qi Li, Jiachuan Yang, Zhi-Hua Wang, Elie Bou-Zeid
Improving The Representation Of Convective Heat Transfer In An Urban Canopy Model, Qi Li, Jiachuan Yang, Zhi-Hua Wang, Elie Bou-Zeid
International Building Physics Conference 2018
The urban street canyon has been widely recognized as a basic surface unit in urban micrometeorological studies. Urban canopy models (UCMs), which quantify the exchange of energy and momentum between the urban surface and the overlying atmosphere, often adopt this type of street canyon representation as the fundamental surface element. Since UCMs can be coupled to regional-scale weather and climate models such as the Weather Forecast and Research Model (WRF), parametrizations of the surface momentum and scalar fluxes in UCM are of paramount importance. However, many current single-layer UCMs rely on empirical relations that were obtained over 80 years ago …