TITLE: Flow in a Turbine Cascade

By: V A Semin, CHAM Development Team

PURPOSE OF THE CALCULATIONS:

• The geometry is that specified by Mr. E Jal of GEC Alsthom. It is for a typical steam-turbine cascade. Experimental data was also supplied.

MAIN FEATURES OF CFD MODEL:

• Steady, compressible flow with cyclic boundary conditions.
• Highly non-orthogonal mono-block grid. Grids of 48*98, 24*196 and 72*196 are used.
• Turbulence represented using standard high-Reynolds K-E model.
• MINMOD higher-order differencing scheme for convection terms.

The images show:

The Grid

The Pressure Field

Convergence Behaviour

Comparison with Data

Grid used for 3D Calculations