Search for dissertations about: "transonic turbomachinery"
Showing result 1 - 5 of 13 swedish dissertations containing the words transonic turbomachinery.
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1. Multi-objective CFD-based design method for axial compressors
Abstract : Economic aspects such as reducing specific fuel consumption and ever growing environmental requirements on emissions and perceived noise levels are the major incentives in the pursuit to improve aircraft engines. The overall efficiency of the engine is a combination of propulsive efficiency and thermal efficiency. READ MORE
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2. Numerical Methods for Turbomachinery Aeromechanical Predictions
Abstract : In both aviation and power generation, gas turbines are used as key components. An important driver of technological advance in gas turbines is the race towards environmentally friendly machines, decreasing the fuel burn, community noise and NOx emissions. READ MORE
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3. Experimental Investigation of Velocity Gust in High Pressure Turbines
Abstract : This thesis investigates the unsteady three-dimensional gustfield in high subsonic and transonic turbine stages based onexperimental velocity data. The generation, propagation andinteraction mechanisms of the velocity gust in high pressureturbines are studied. READ MORE
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4. Development and Validation of a Numerical Tool for the Aeromechanical Design of Turbomachinery
Abstract : In aeromechanical design one of the major rules is to operate under High Cyclic Fatigue (HCF) margins and away from flutter. The level of dynamic excitations and risk of HCF can be estimated by performing forced response analyses from blade row interaction forces or Low Engine Order (LEO) excitation mechanisms. READ MORE
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5. Design, Optimization and Evaluation of a Transonic Aeroelastic Rig
Abstract : The compressor is one of the most essential components of a modern turbomachinery engine. This component is exposed to vibrations that without proper design can damage structural integrity and lead to failure. READ MORE