Output details

The benefit of high-conductivity materials in film cooled turbine nozzles

This work was an international collaboration with Texas A&M University, US, turbine heat transfer laboratory which showed that thermal gradients have higher influence than the maximum temperature on the life of aero-engine components. In this work it is shown that these gradients may be reduced by using high conductivity materials and, as a consequence, the nozzles life maybe appreciably increased. By introducing inserts of nickel-aluminide alloys in nozzles may reduce the thermal gradients from 3 to 4 times if compared to nowadays design with a strong impact on reliability.