Experimental Investigation of Reynolds Number and Blockage Effects on Aerodynamical Characteristics of a Standard Model at Transonic Regime

Boundary layer growth and hence displacement thickness are the key factors in shock position over aerodynamical surfaces at transonic regimes. Since boundary layer growth is a function of free stream Reynolds number and also of the transition location, the free stream Reynolds number and also the other parameters involved in the boundary layer growth and its transition location are determinant in positioning the shock formation and also in aerodynamical forces and moments on a body at transonic regimes. In this paper, the quantitative role of Reynolds number on aerodynamical forces and moments of an AGARD-B model has been investigated. Also, from the results of wind tunnel testing, the blockage of the flow is another effective parameter in the accuracy of the results.