Abstract Mixed flow compressor stage designs are becoming increasingly popular for use in Micro Gas Turbine (MGT) engines. Due to manufacturing constraints and structural considerations, such compressors typically feature unshrouded impeller designs. A numeric investigation of the effect impeller-shroud tip clearance on performance a MGT mixed fitted with crossover diffuser is presented. Three ...

Abstract The simulations and assessment of transient performance gas turbine engines during the conceptual preliminary design stage may be conducted ignoring heat soakage tip clearance variations due to lack detailed geometrical structural information. As a result, problems with stability not revealed correctly, corresponding iterations would necessary costly when those are at stage. To make an...