THREE-DIMENSIONAL VISCOUS FLOW ANALYSIS FOR MOVING BODIES PAST FIXED STRUCTURES

THE USE OF COMPUTER CODES THAT SIMULATE FLUID FLOWS IS BECOMING INCREASINGLY IMPORTANT IN THE DESIGN OF AIRCRAFT COMPONENTS. THE CURRENT STATE OF THE TECHNOLOGY OF NUMERICAL SIMULATION OF VISCOUS FLUID FLOWS IS SUFFICIENT FOR DEVELOPING ENGINEERING TOOLS FOR FLOW ANALYSIS OF VARIOUS TYPES OF COMPLEX THREE-DIMENSIONAL FLUID FLOWS. OF PARTICULAR INTEREST ARE FLOWS WITH AERODYNAMIC BODIES PERIODICALLY MOVING PAST FIXED STRUCTURES SUCH AS FOUND IN TURBOMACHINE COMPRESSOR AND TURBINE PASSAGES, AND HELICOPTER BLADE/FUSELAGE INTERACTION. A COMPUTER CODE WILL BE DEVELOPED THAT HAS THE CAPABILITY OF ANALYZING FLOWS OVER COMPLEX 3D CONFIGURATIONS USING MULTIPLE ZONE OF MESH AND SOLVER TYPE (NAVIER-STOKES, EULER, POTENTIAL, ETC.). EACH ZONE IS CHOSEN TO MINIMIZE MESH GENERATION DIFFICULTY AND TO UTILIZE THE LEAST EXPENSIVE SOLVER TYPE THAT IS APPROPRIATE IN THAT PART OF THE FLOW FIELD. THE OBJECTIVE OF THE PHASE I EFFORT IS TO DEVELOP AND VALIDATE THE ANALYSIS PROCEDURE FOR FLOW THROUGH A ROTATING TURBINE BLADE MOVING PAST STATIONARY BLADES.