In this paper, numerical analysis based on the RANS equation and the Realizable ${kappa}-{varepsilon}$ turbulence model is carried out for flows around an axisymmetric body at three Reynolds numbers($1.22{ imes}10^7$, $1.0{ imes}10^8$, $1.5{ imes}10^8$) and the numerical results are compared with experiments data. Computed velocity distributions agree well with experiments as the Reynolds number increases. Pressure distributions agree well with the results of the potential flow except the tail region but differ from experiments for the parallel middle body as well as tail region. Pressure gradients show a good agreement with those of potential flow and experiment except the tail region. Friction coefficients show that the numerical results generally are lower than the experimental results estimated from the measured velocity. The difference of friction coefficients between the calculation and the experiment increases with growing of a boundary layer.