Programs for Computation of Velocities and Streamlines on a Blade-to-Blade Surface of a Turbomachine

Abstract

This paper describes Fortran programs that give the solution to the two-dimensional, subsonic, nonviscous flow problem on a blade-to-blade surface of revolution of a turbomachine. Flow may be axial, radial, or mixed. There may be a change in stream channel thickness in the through-flow direction. Either single, tandem, or slotted blades may be handled as well as blade rows with splitter vanes. Also, small regions may be magnified to give more detail where desired, such as around a leading or trailing edge or through a slot. The method is based on a finite difference solution of the stream function equations. Numerical examples are shown to illustrate the type of blades which can be analyzed, and to show results which can be obtained. Results are compared with experimental data.

Mesures et analyses de l'écoulement dans une roue de pompe mixte

“…La précision de cette formule pour notre cas a été testée à l'aide de calculs inter-aubes par la méthode de Katsanis [6] et l'accord sur les valeurs de la vitesse maximale est satisfaisant à environ 6 % en moyenne.…”

Aerodynamic Design of Low-Speed Axial-Flow Fans: A Historical Overview

“…In 1968, Katsanis [44] proposed a fortran-based routine to solve the inviscid flow through a blade-to-blade passage: this work represents one of the precursor of today's Computational Fluid Dynamics CFD for turbomachinery applications. Turbomachine designers welcomed the advent of fluid-dynamic simulations, as these tools allow a degree of detail that is rather difficult to achieve experimentally [45].…”

Solution of Plane Cascade Flow Using Improved Surface Singularity Methods

“…Soma comparisons have been made with the finite difference code of Ksteanie [11) for subsonic flows and the agreement was good.…”