Etude Experimentale des Ecoulements Secondaires en Presence de Deux Rangees de Jets a la Paroi d'Une Grille de Turbine (Experimental Study of Secondary Flow in the Presence of Two Jet Arrays on the Wall of a Turbine Blade)

摘要

A experimental study of the interaction of the secondary turbine flow with the cooling jets injected at the base of the blades is presented. Subsonic wind tunnel tests were carried on using a gas turbine wheel. The hot wire sensor and the five orifices pressure transducer used in the tests are described. The results allow a satisfactory description of the evolution of the jets in the space between blades and give some indications of the interactions of jets with secondary flows, passing vortices and between themselves.