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Desktop Computer Programs For Preliminary Design Of Transonic Compressor Rotors, Brian C. Mcdonald
Desktop Computer Programs For Preliminary Design Of Transonic Compressor Rotors, Brian C. Mcdonald
Theses and Dissertations
A need exist for correlation-based desktop computer programs that predict the flow through transonic compressor rotors with nominal computational time and cost. Modified versions of two desktop computer programs, BOWSHOCK and TRANSROTOR, were used to perform a parametric study on a modem compressor rotor. BOWSHOCK calculates the exit flow properties of a supersonic streamtube through a user-defined compressor rotor. TRANSROTOR calculates flow properties at three stations in a user-defined compressor stage. Modifications to TRANSROTOR included the incorporation of a recently published rotor loss model. Baseline and modified TRANSROTOR versions were run with two modern transonic compressor blades. Results were compared …
Computational Investigation Of Aeromechanical Hcf Effects In A Compressor Rotor, Andrew L. White
Computational Investigation Of Aeromechanical Hcf Effects In A Compressor Rotor, Andrew L. White
Theses and Dissertations
High-Cycle Fatigue is a major problem facing the gas turbine industry today. It has been investigated by many researchers, using many different methods. Due to its highly complex nature, designers still do not have adequate tools to accurately predict the onset of high-cycle fatigue. A three-dimensional Navier-Stokes program was used to perform a study of the unsteady aerodynamics on a compressor rotor. The effect of aerodynamic detuning on the forced response of a rotor blade was compared to a baseline tuned rotor case. Detuning consisted of a ten percent decrease in circumferential spacing between alternate pairs of blades. The high-cycle …