Abstract
Because of NOx, SOx and CO2 exhausted by fossil-fuel combustion, air pollution is one of critical issues in our environment. To overcome these environmental problems, we have investigated jet engines, in which hydrogen fuel is injected from turbine blade surface and combusted within turbine blade passages. In the previous studies, endwall effects on the turbine performance have not been considered. However, it is expected that secondary flows due to the endwall have substantial effects on the engine performance. Therefore, it is necessary to clarify the influence of the endwall on the characteristics of the 3-dimensional flow field with hydrogen-fueled combustion. Reynolds-averaged compressible Navier-Stokes equations are solved with incorporating a turbulence and a reduced chemical mechanism models. Using the computational results, the engine performance is evaluated from the standpoints of combustor and turbine.
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