ADVANCED SECONDARY GAS PATH DESIGN SYSTEM

AN INNOVATIVE APPROACH IS PROPOSED FOR THE DESIGN OF SECONDARY GAS PATH SYSTEMS FOR GAS TURBINE ENGINES. THE PROPOSED PHASE I/PHASE II PROGRAM WOULD BE PURSUED BY SRA AS A PRIME CONTRACTOR WITH TELEDYNE CAE PARTICIPATING AS A SUBCONTRACTOR. UNDER THIS EFFORT AN EXISTING CODE WOULD BE FURTHER DEVELOPED, ASSESSED AND MODIFIED FOR USE IN A WORKSTATION ENVIRONMENT. ALL INPUT/OUTPUT WOULD BE PERFORMED EITHER ON THE WORKSTATION OR ROUTED TO A MAINFRAME COMPUTER AT THE DISCRETION OF THE USER. DEVELOPMENT OF SUCH A PROCEDURE WOULD OVERCOME A MAJOR PROBLEM IN INCORPORATING SOPHISTICATED CFD CODES IN THE DESIGN PROCESS; THAT BEING SETTING UP THE FLOW PROBLEM AND INTERROGATING RESULTS. UNDER PHASE I, SRA AND TELEDYNE WOULD DESIGN AN INTERACTIVE WORKSTATION INPUT MODULE SUITABLE FOR INCORPORATION INTO THE DESIGN SYSTEM. THIS PROCEDURE WOULD BE DEMONSTRATED ON ONE OR MORE CONFIGURATIONS CHOSEN BY SRA AND TELEDYNE. UNDER PHASE II, SRA WOULD DEVELOP THE WORKSTATION OUTPUT CONFIGURATION PROCEDURES, CONVERT THE CODE TO RUN ON A WORKSTATION AND EXTEND THE CODE LABYRINTH SEAL CONFIGURATIONS. SRA AND TELEDYNE CAE WOULD JOINTLY ASSESS THE CODE AGAINST A VARIETY OF EXPERIMENTAL DATA AND TELEDYNE CAE WOULD OBTAIN ADDITIONAL DATA IF DEEMED NECESSARY. THIS WORKSTATION-BASED CODE WOULD BE A SIGNIFICANT AID IN DESIGNING ADVANCED CAVITIES AND SEALS FOR GAS TURBINE APPLICATIONS.