Abstract:
It is shown that any infinitely differentiable solution of the stationary Euler system is the solution of corresponding quasi-hydrodynamic system if and only if it satisfies to stationary Navier-Stokes system. An example of the exact solution, which is common for three these systems and describes an isothermal vortex in gas, is given.
Keywords:full quasi-hydrodynamic equations, Euler and Navier-Stokes systems, exact solutions.