Search for dissertations about: "turbo machinery"
Showing result 1 - 5 of 6 swedish dissertations containing the words turbo machinery.
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1. Unsteady Navier Stokes solver for the simulation of compressor flutter in turbomachines
Abstract : .... READ MORE
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2. Conceptual Design of Propulsion Systems for Boundary Layer Ingestion
Abstract : To reduce the climate impact of aviation new aircraft and engine concepts as well as improved design methods are needed. In this thesis, two fronts are explored. The first concerns improved methods for the conceptual design of the engine. READ MORE
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3. Surface Integrity of Broached Inconel 718 and Influence of Thermal Exposure
Abstract : Inconel 718 is a nickel-based superalloy that is extensively used as a disc material in gas turbine engines. The service life of gas turbine discs is normally governed by the modes of material degradation and fatigue failure since they work mostly at high temperatures and are subjected to cyclic mechanical loadings. READ MORE
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4. Turbomachinery in Biofuel Production
Abstract : The aim for this study has been to evaluate the integration potential of turbo-machinery into the production processes of biofuels. The focus has been on bio-fuel produced via biomass gasification; mainly methanol and synthetic natural gas. The research has been divided into two parts; gas and steam turbine applications. READ MORE
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5. Surface Integrity and Fatigue Performance of Nickel-based Superalloys
Abstract : Due to global warming, the demand for more efficient gas turbines has increased. A way to achieve this, is by increasing the operating temperature of the gas turbine. Therefore, nickel-based superalloys have been developed to withstand these extreme temperatures and loads, especially in the hot sections. READ MORE