The result of numerical simulation shows that the designed non-axisymmetric hub can make the corner separation in the root of stationary blade of prototype compressor decreased significantly and the operating efficiency of stage improved.

Experimental investigation on flowfields of non-axisymmetric endwall of annular cascades in multi condition;

Based on non-uniform rational B-spline surface technique,the parameterized geometry profiling of non-axisymmetric endwall for turbine cascades was achieved in this paper.

Aerodynamic performance of two kinds of annular turbine cascade with non-axisymmetric endwall,which are designed with trigonometric function profiling method and pressure difference profiling method,are experimentally investigated with an annular cascade wind tunnel test rig.

Comparison and analysis of the results between the axisymmetric endwall and non-axisymmetric endwall has been completed to find out how non-axisymmetric endwall profiling affects the secondary flow in turbine.

Because of large secondary flow loss located in hub region of last stage rotor of steam turbine, which results from large flow turning angle, the mechanism of non-axisymmetric endwall profiling for reduction of secondary flow loss in turbine cascade is explored by numerical simula.

Analysis of asymmetry of gas-phase flow field in volute cyclone;

The asymmetry of gas flow field in a cyclone separator was studied based on the flow field predicted by Fluent 6.

In this parer, the features of hot extruding and upsetting on the unsymmytrical shaft parts have been analyzed.