Computer fluid dynamics application for establish the wind loading on the surfaces of tall buildings

The scope of this paper consists in the Computer Fluid Dynamics apply to establish the wind effects on the surfaces of the tall buildings systems. The tall buildings are in present more and more frequently in the modern cities. The topology of the buildings and the wind directions are more and more important in the case of new tall buildings design. The new materials used in structural engineering with their high mechanical properties, the construction machinery the technologies advances and the economical scope are the principal reasons in the design and execution of taller and more slender structures. In practice the quasi-static computing method used for current structure is exceed by inherit structural flexibility. The wind forces systems that load the buildings surfaces are in practices extremely difficult and expensive. Even the use of wind tunnel is extremely difficult in principal by the problems in the dumping values for the aero-elastic model assuming and Reynolds number scaling. The butt of this article consist in development of a CFD method very useful as a complimentary tool for easy establish the wind tunnel parameters work conditions. In the present paper the CFD modeling is based on Volume Finite Method (VFM) with Total Validation Diminishing Method (TVD) for modeling the flow around complexes buildings surfaces and establishes the pressure variation around them. The new CFD VFM algorithm is developed for minimal errors and based on Riemann and Godunov solvers. The results of this method are compared with the quasi-static models and with the most used numerical method.