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.
Results
Showing 1 to 20 of 1062 for “"Inception"”.
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Unsteady disturbance structures in axial flow compressor stall inception
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
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Simulation of spike stall inception in a radial vanted diffuser
… stability. Experiments suggest that spike stall inception in centrifugal compressors can be formed by a vaned diffuser. To address these issues, a numerical study on an advanced, vaned-diffuser centrifugal compressor was conducted to investigate stall inception. A steady three-dimensional …
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Tip clearance flows in axial compressors: stall inception and stability enhancement
… The role of tip clearance flows in the stall inception process is still debated, though. The aim of this thesis is to improve the fundamental understanding of the tip clearance flow field and its role in the stall inception process. The knowledge gained is used to develop a new casing …
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Stall inception in high stage loading low pressure ratio transonic fans
… is highly challenging in terms of stall. Stall inception of a modern, high stage loading, low pressure ratio transonic was investigated using single-passage steady and full annulus unsteady computational fluid dynamics. The computational method was validated using experimental data and …
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Blade passage flow structure effects on axial compressor rotating stall inception
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1996.
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Investigation of stall inception in centrifugal compressors using isolated diffuser simulations
… flow. This is suggested to lead to spike stall inception.
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A study of the rotating-stall inception in high-speed compressors
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
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Modeling the climatic sensitivity of the inception of the Fennoscandian Ice Sheet
… ice sheets. Multiple studies have analyzed the inception of the Quaternary ice sheets using time-dependent global climate models. The results have indicated that although carbon dioxide levels, summer insolation, and sea level are important, ice sheet growth is most dependent on the distribution …
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The Major Factors That Have Affected the Game of Basketball since Its Inception
There are five major factors that have affected this game of basketball since it had its beginning back in 1891 and the writer will attempt to cover these in the next five chapters of this publication .
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Experimental investigation of rotating waves as a rotating stall inception indication in compressors
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Two investigations of compressor stability : spike stall inception and transient heat transfer effects
Two investigations of current problems in the field of compressor stability are presented. The first is of the formation of spike-type rotating stall precursors. Recently, high fidelity computations have attributed pre-cursor formation to a leading-edge separation and consequent shedding of …
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From Inception to Professionalisation: the Evolution of Intercultural Dialogue in EU Mediterranean Policies (1990-2014)
This thesis investigates the promotion of intercultural dialogue (ICD) in the framework of EU external action on the Mediterranean between 1990 and 2014. ICD is understood as a cultural foreign policy instrument that the EU has promoted in a changing, vague and contradictory manner to engage the …
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Three-dimensional rotating stall inception and effects of rotating tip clearance asymmetry in axial compressors
… of two types of flow nonuniformity on stall inception behavior were assessed with linearized stability analyses of two compressor flow models. Response to rotating tip clearance asymmetries induced by a whirling rotor shaft or rotor height variations were investigated with a two-dimensional …
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Existence and Analysis of a Rotating Stall Inception Continuum & Development of Concept Questions in Fluid Dynamics
… two projects, an analysis of rotating stall inception for axial compressors in turbomachinery, and a description of the creation of Concept Questions for a text on internal flows. The first part of this thesis identifies flow behavior that defines two routes to rotating stall, known as modal …
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Slovene language policy in time and space : the trajectory of a language strategy from inception to implementation
… this thesis, I investigate its trajectory from inception to (attempted) implementation. My study analyses policymaking practices during a time of political, social and economic instability in Slovenia, and investigates how the roles of various actors involved with the policy changed along with …
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Concepts of soul : an investigation into the concepts of the soul current at the inception of Christianity
This thesis has been called forth by the debate about the concept soul which has been pursued in many fields: in theology by Oscar Cullmann and many others; in philosophy by Gilbert Ryle, among others. In psychology, we find that as early as 1926, at an International Psychological Conference, …
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A Comparative Analysis of Experimental and Computational Methods for Evaluating Partial Discharge Inception Voltage on Printed Circuit Boards
… stimulus to determine the partial discharge inception voltage (PDIV) for each design. Simulations of the geometry for each PCB test subject were also conducted using COMSOL Multiphysics. The resulting FE models were analyzed using two techniques: a traditional maximum-field-based approach and …
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