By solving the two dimensional RANS Navier-Stokes equations,the partially vibrating wall in the two-dimensional tube flow field was simulated and the impact of different boundary conditions in the calculation of incompressible and compressible situations on the partially vibrating wall was analysed.The results show that:compared with the total pressure inlet condition,the velocity inlet and mass flow inlet conditions have less restriction on the flow in the case of incompressible calculation,so,the wall vibration can affect the up and down stream flow parameters simultancously.Moreover,even if the Mach number Ma<0.3,the compressible fluid flow phenomena are completely different from those under the incompressible fluid calculation conditions.Meanwhile,compared with low-frequency vibration conditions,the influence of boundary conditions on the calculation results of high-frequency vibrations is even smaller.Therefore,to simulate the actual gas turbine with a small high-frequency vibrating cascade,in the calculation the compressibility of fluid should be taken into account.Under relatively gentle and sufficient inlet conditions,a conventional analogic velocity inlet in the calculation of the flow around the blade can still be used.