Improvement of Inflow Boundary Condition in Large Eddy Simulation of Flow Around Tall Building

Autor:	Ming Gu, Ai-she Zhang, De-qian Zheng
Rok vydání:	2012
Předmět:	Engineering General Computer Science Field (physics) business.industry Planetary boundary layer Flow (psychology) Mechanics Aerodynamic force Modeling and Simulation Fluent Boundary value problem business Reynolds-averaged Navier–Stokes equations Simulation Large eddy simulation
Zdroj:	Engineering Applications of Computational Fluid Mechanics. 6:633-647
ISSN:	1997-003X 1994-2060
DOI:	10.1080/19942060.2012.11015448
Popis:	In order to predict wind loads on building structures in the atmospheric boundary layer (ABL) employing large eddy simulation (LES), the primary task would be to generate proper turbulent inflow boundary condition (IBC), which is one of the main influence factors for LES. The objective of this paper is to present a simple IBC generation method to improve the LES predictions for building loads in the ABL using the commercial code Fluent. The proposed method is a combination of equilibrium IBC expressions for Reynolds averaged NavierStokes (RANS) equations with the random flow generation (RFG) procedure, which is used in Fluent. The equilibrium IBC is used for the solution of steady-state RANS to obtain information for the RFG procedure. In order to verify the efficiency of the present method, the simulation of wind flow field around a single tall building was carried out by adopting the above computing process. Detailed comparisons between the simulated and the experimental results show that the pr...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3e13b8525a5fd393ca28f192777b9885 https://doi.org/10.1080/19942060.2012.11015448 Zobrazit plný text záznamu