in desisncede, some design knowledse about wind load on buildinss, i. e. ,wind load coefficient of building shape μs, is diasraniniatically prescribed.Wind pressure on a building surface partly depends on the shapo o...in desisncede, some design knowledse about wind load on buildinss, i. e. ,wind load coefficient of building shape μs, is diasraniniatically prescribed.Wind pressure on a building surface partly depends on the shapo of the surfaceand the dimension of the building. This part of desisn knowledge can not bedirectly used in CAD systems.It must be prucesaed in order to autogenerate thewind load on a building for the niechanical analysis of the building structure.The article presents the formalization of design knowledge about wind load onbuildings. A mathematical model for the plane seonietrical contour of buildingstructure is established. The map relationship between the shape, dimension ofbuilding and wind load coefficient of building shape is numerically depicted.Therefore, the autogeneration of wind load on building structure isaccomplished. The data structure and algorithm related to the accomplishmentare also described in details.展开更多
Flow structure and wind pressure distribution caused by obtuse obstacles are usually the focuses in Computational Wind Engineer researches (CWE). By solving the non-hydrostatical dynamic equations, PUMA model (Peking ...Flow structure and wind pressure distribution caused by obtuse obstacles are usually the focuses in Computational Wind Engineer researches (CWE). By solving the non-hydrostatical dynamic equations, PUMA model (Peking University Model of Atmospheric Environment) was developed and applied to simulating the flow structure and wind pressure distribution around a tower-shaped building. Evaluation about the wind environment and wind loads around the building was obtained through the analysis of the numerical simulation results and wind tunnel data. Comparisons between the simulation and wind tunnel study indicate that numerical simulation results agree well in the flow field and wind pressure distribution around the tower-shaped building. On the other hand, the horizontal grid interval of 2 m and the vertical grid of 3 m were still too crude to simulate the flow structure and wind pressure distribution on the building surface more exactly in detail; and the absence of suitable pressure perturbation parameterization scheme between the solid and the adjacent space also limits the accuracy of the numerical simulation. The numerical simulation model can be used to evaluate the wind environment and wind load around high buildings.展开更多
文摘in desisncede, some design knowledse about wind load on buildinss, i. e. ,wind load coefficient of building shape μs, is diasraniniatically prescribed.Wind pressure on a building surface partly depends on the shapo of the surfaceand the dimension of the building. This part of desisn knowledge can not bedirectly used in CAD systems.It must be prucesaed in order to autogenerate thewind load on a building for the niechanical analysis of the building structure.The article presents the formalization of design knowledge about wind load onbuildings. A mathematical model for the plane seonietrical contour of buildingstructure is established. The map relationship between the shape, dimension ofbuilding and wind load coefficient of building shape is numerically depicted.Therefore, the autogeneration of wind load on building structure isaccomplished. The data structure and algorithm related to the accomplishmentare also described in details.
基金NSFC Project (Grant No. 40575069)partly by Zhejiang Science and Technology Foundation (Grant No. KF2006002)
文摘Flow structure and wind pressure distribution caused by obtuse obstacles are usually the focuses in Computational Wind Engineer researches (CWE). By solving the non-hydrostatical dynamic equations, PUMA model (Peking University Model of Atmospheric Environment) was developed and applied to simulating the flow structure and wind pressure distribution around a tower-shaped building. Evaluation about the wind environment and wind loads around the building was obtained through the analysis of the numerical simulation results and wind tunnel data. Comparisons between the simulation and wind tunnel study indicate that numerical simulation results agree well in the flow field and wind pressure distribution around the tower-shaped building. On the other hand, the horizontal grid interval of 2 m and the vertical grid of 3 m were still too crude to simulate the flow structure and wind pressure distribution on the building surface more exactly in detail; and the absence of suitable pressure perturbation parameterization scheme between the solid and the adjacent space also limits the accuracy of the numerical simulation. The numerical simulation model can be used to evaluate the wind environment and wind load around high buildings.
