Search for dissertations about: "rotor-stator interaction"
Showing result 1 - 5 of 11 swedish dissertations containing the words rotor-stator interaction.
-
1. Turbomachinery Aeroacoustic Calculations using a Time Domain Chorochronic Method
Abstract : Noise regulations for aircrafts that fly over populated areas are continuously becoming stricter. This in combination with increasing computational capabilities has boosted interest in aeroacoustic computations in the aerospace industry. READ MORE
-
2. Turbomachinery Aeroacoustic Calculations using Nonlinear Methods
Abstract : Noise regulations for aircraft that fly over populated areas are becoming continuously stricter. This in combination with increasing computational capabilities has boosted interest in aeroacoustic computations in the aerospace industry. READ MORE
-
3. Modeling of Unsteady Flow Effects in Throughflow Calculations
Abstract : In this work an evaluation of a deterministic stress transport model and a linearized Navier-Stokes harmonic approach for including unsteady effects in the steady mixing-plane computations of a multistage transonic compressor has been performed. The results of these two models are compared with those of time-average time-accurate solutions. READ MORE
-
4. Modeling Unsteady flow Effects in 3D Throughflow Calculations
Abstract : The flow field in a transonic multistage compressor is compressible, three-dimensional and highly unsteady and can be predicted in principle by the exact time-accurate Navier-Stokes equations. The high Reynolds number encountered in multistage turbomachinery together with the wall-bounded nature of the flow environment however prevent the use of DNS to solve the exact N-S equations. READ MORE
-
5. Numerical Investigation of Aerodynamic Blade Excitation Mechanisms in Transonic Turbine Stages
Abstract : With the present drive in turbomachine engine developmenttowards thinner and lighter bladings, closer spaced blade rowsand higher aerodynamic loads per blade row and blade, advanceddesign criteria and accurate prediction methods for vibrationalproblems such as forced response become increasingly importantin order to be able to address and avoid fatigue failures ofthe machine early in the design process. The present worksupports both the search for applicable design criteria and thedevelopment of advanced prediction methods for forced responsein transonic turbine stages. READ MORE