LANDSCAPE WIND TUNNEL KRYLOV STATE RESEARCH CENTRE
The paper considers the scientific problems arising in design and construction of the ships as well as of the complex sea and architectural structures for which exact data on aerodynamic characteristics is important. The needs in specialized wind tunnels for correct definition of wind loadings at design of such responsible and unique structures is demonstrated. For the solution of these problems in Krylov State Research Center the first Russian Landscape wind tunnel was put into operation. The technical parameters of new facility were justified in connection with the task to investigate aerodynamic stability and wind loadings for large models of vessels and constructions taking into account simulation of an interface with the atmosphere boundary layer. One of the most difficult questions of modeling for such experimental installation is considered: reproduction of the atmosphere interface. As example, the impact of atmospheric interface on vessel aerodynamic characteristic obtained in new wind tunnel is demonstrated. It was found that at some wind direction the allowance of atmospheric boundary layer led to 40% correction of air dynamic coefficients.