VELOCITIES AND STREAMLINES ON A BLADE-TO-BLADE STREAM SURFACE OF A TANDEM
BLADE TURBOMACHINE

( NASA Lewis Research Center )

     This computer program gives the blade-to-blade solution of the two-
dimensional, subsonic, compressible (or incompressible), nonviscous flow
problem for a circular or straight infinite cascade of tandem or slotted
turbomachine blades. The blades may be fixed or rotating. The flow may be
axial, radial , or mixed.

     The method of solution is based on the stream function using an itera-
tive solution of nonlinear finite-difference equations. These equations
are solved using two major levels of iteration. The inner iteration con-
sists of the solution of simultaneous linear equations by successive over-
relaxation, using an estimated optimum over-relaxation factor. The outer
iteration then changes the coefficients of the simultaneous equations to
correct for compressibility.

     The program input consists of the basic blade geometry, the merid-
ional stream channel coordinates, fluid stagnation conditions, weight flow
and flow split through the slot, and inlet and outlet flow angles. The out-
put includes blade surface velocities, velocity magnitude and direction
throughout the passage, and the streamline coordinates.

     COSMIC, and the COSMIC logo are registered trademarks of the National
Aeronautics and Space Administration. All other brands and product names
are the trademarks of their respective holders.



LANGUAGE: FORTRAN IV ( 99 %); ASSEMBLER ( 01 %);

MACHINE REQUIREMENTS: IBM 7000 SERIES

PROGRAM SIZE: APPROXIMATELY 2,536 SOURCE STATEMENTS

DISTRIBUTION MEDIA: 9 Track 1600 BPI Card Image Format Magnetic Tape

PROGRAM NUMBER: LEW-10743

DOMESTIC - DOCUMENTATION PRICE: $25.00    PROGRAM PRICE: $500.00

INTERNATIONAL - DOCUMENTATION PRICE: $50.00   PROGRAM PRICE: $1000.00



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