Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Aero-thermal"”.
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Aero-thermal-mechanical interactions in ultra high-speed micro gas turbines
Aero-thermal induced mechanical response of engine components in an ultra high-speed micro gas turbine engine system is assessed. Scaling down gas turbine engines for high performance requirement dictates substantial thermal-induced effects on engine operation due to high temperature gradient …
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Aerodynamic and thermal analysis of a heat source at the underside of a passenger vehicle
… of cross-winds on the automotive underbody aero-thermal phenomena using a 2005 Chevrolet Aveo5 with a heat source affixed to it to create a baseline. The results show that irrespective of the yaw angle used, only temperatures in the vicinity of the heat source increased. The rear suspension …
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Characterization and design of non-adiabatic micro-compressor impeller and preliminary design of self-sustained micro engine system
… of the competing effects of geometry on (i) aerodynamic loss and (ii) on heat transfer to impeller flow. In accord with these findings, CFD calculations show that configuring a micro-impeller excluding the heat addition as a design variable can incur a penalty of more than 10 efficiency …
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Viscosity stabilized adjoint method for unsteady compressible Navier-Stokes equations
… algorithm, shows approximately 15% better aero-thermal performance than the baseline design. Such design optimizations are possible due to the availability of massively parallel supercomputers. Designing high performance fluid flow solvers for the next generation supercomputers is a …
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Performance Attributes and Research Facility Design for 1KW High-speed Small Gas Turbine Engine
… from design intent due to differential radial thermal expansion of the shaft and bearing housing system. Parametric assessments of the clearance variation for varying imposed conditions by the primary flowpath are conducted using a reduced-order model. This model is derived from combined …
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High-Fidelity Computational Analysis of the Aerothermal Performance of In-serviced Jet Engine Blades
… In this case, the problem is represented by the aero-thermal behavior of the jet engine’s most characteristic components: the blades. As mentioned above, to increase the fidelity of the model, key aspects that characterize the real operation of these components can be included in it, beginning …
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Development and application of an integrated aerodynamic and thermodynamic testing system for cars
In this thesis an integrated aerodynamic and thermodynamic testing system was developed. It consists of an incremental force measuring system (FMS) that was designed and constructed. In addition, a testing protocol was developed to integrate aerodynamic and thermodynamic testing in the climatic …
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Development of a robust numerical optimization methodology for turbine endwalls and effect of endwall contouring on turbine passage performance
… studies on the effect of endwall contouring on aerodynamics performance of a turbine passage at high exit Mach numbers have been published. There is, however, no study available in the open literature for a very high turning blade with a transonic design exit Mach number and the effect of …