Equations of tunnel mathematics [3] can be applied for solving the steady Navier-Stokes equation for compressible fluid while the motion of fluid particles is described by means the velocity as a vector function. The principles of application are similar to those for incompressible fluid [2]. Especially this concerns to boundary conditions imposed on a disk surface which remain unchanged. The motion of compressible fluid entrained by a rotating disk of finite radius exhibits complex interaction pattern of main stream and compression and rarefaction simple cylindrical waves propagating in fluid (Fig. 1). If the velocity of main stream is subsonic then these simple cylindrical waves propagate in both direction of cylindrical polar coordinate r, if supersonic then only in direction of increasing of r coordinate. If the velocity of main stream becomes supersonic then forming of a shock wave is possible. However, it is impossible to reach the supersonic velocity for a fluid entrained by a rotating disk of finite radius since the only presence of centrifugal forces is not suffice for this. Moreover, when the velocity of main stream become comparable with that of sound the considerable heating of the gas and the disk occurs and we then should to deal with the equations of motion in the boundary layer together with the equation of heat transfer in it [1, p. 162, footnote]. Since the steady Navier-Stokes equation cannot describe oscillations of fluid particles obtained expressions of velocity projections and pressure relate to their time averaged values. We suppose that Reynolds number is enough large and the viscosity has in important effect on the motion of fluid only in a very small region near the disk (boundary layer). We also suppose that the fluid and the disk had at beginning the same temperatures and the energy dissipation occurs only by means internal friction.