Comparing N3-60 cascade exit angles obtained from tunnel measurements and numerical simulations

Abstract

The N3-60 profile is a basic profile used in impulse turbines produced in Poland. In the eighties, a series of tests of those profiles were performed in the aerodynamic tunnel owned by the Czestochowa University of Technology. Variable parameters in these tests were the profile stagger angle α u and the relative pitch t/b. The tests aimed at preparing basic flow characteristics of the profiles and cascades to use them in the turbine design process. An isolated profile N3 is shown in Fig. 1. Basic geometrical parameters which define the N3-60 profile are given in Fig. 2 Fig. 3.