Numerical Simulation of Tip-Clearance Flow in Cascade

The tip clearance flow in a cascade was numerically simulated by solving the RANS equations of incompressible fluids. The computational model is based upon the artificial compressibility formulation proposed by Chorin. The Baldwin Lomax turbulence model is used to enclose the governing equations. Considering the special features of tip clearance flow, a multi block grid structure is adopted to facilitate numerical computations. The comparison of the numerical results with the experimental data indicates that the present method is capable of simulating tip clearance flows with satisfying accuracy.