Partitioning algorithm for N-S equations in relative/absolute cylindrical-coordinate systems and investigation on treatment for rotor-stator interaction

A new partitioning algorithm for Navier-Stokes equations in relative/absolute cylindrical-coordinate systems is developed, which base on the combination of Navier-Stokes equations in rotor area and stator area. For the calculation of subareas, high resolution third-order ENN scheme and implicit LU-SGS method are applied. Central investigation is focused on the grid connecting methods between rotor area and stator area and corresponding treatment for rotor-stator interaction. The partitioning algorithm developed in this paper is demonstrated by numerical simulation of a three stages axial flow compressor with inlet guide vane, the computed result shows good accordance with experimental data.