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Fluid mechanics of ported shroud centrifugal compressor for vehicular turbocharger applications
(Massachusetts Institute of Technology, 2015)
This thesis presents an investigation of the effects of Ported Shroud (PS) self-recirculating casing treatment used in turbocharger centrifugal compressors for increasing the operable range. Computed results, assessed with ...
Transport maps for accelerated Bayesian computation
(Massachusetts Institute of Technology, 2015)
Bayesian inference provides a probabilistic framework for combining prior knowledge with mathematical models and observational data. Characterizing a Bayesian posterior probability distribution can be a computationally ...
Optimization and valuation of recongurable satellite constellations under uncertainty/
(Massachusetts Institute of Technology, 2014)
Space-based persistent surveillance provides decision makers with information necessary to effectively respond to both natural and man-made crises. This thesis investigates a reconfigurable constellation strategy that ...
Non-thermal plasmas in flames and other inhomogeneous environments
(Massachusetts Institute of Technology, 2015)
Non-thermal plasmas in non-uniform gases appear in several technological applications (plasma assisted combustion and aerodynamics, and plasma jets), as well as in natural phenomena (sprites). Whereas in the case of plasma ...
A decomposition-based approach to uncertainty quantification of multicomponent systems
(Massachusetts Institute of Technology, 2015)
To support effective decision making, engineers should comprehend and manage various uncertainties throughout the design process. In today's modern systems, quantifying uncertainty can become cumbersome and computationally ...
Lengthscale effects in the damage and failure of composites
(Massachusetts Institute of Technology, 2014)
The primary objective of this work is to investigate and identify lengthscale effects associated with damage in composite materials and their structures, and to determine how these lengthscales vary across levels of ...
Computational modeling of size-dependent superelasticity in shape memory alloys
(Massachusetts Institute of Technology, 2013)
The superelastic effect in shape memory alloys (SMAs) is attributed to the stress-induced reversible austenitic-martensitic phase transformations. It is characterized by the development of significant strains which are ...
Robust sampling-based motion planning for autonomous vehicles in uncertain environments
(Massachusetts Institute of Technology, 2014)
While navigating, autonomous vehicles often must overcome significant uncertainty in their understanding of the world around them. Real-world environments may be cluttered and highly dynamic, with uncertainty in both the ...
Networked control of aircraft operations at airports and in terminal areas
(Massachusetts Institute of Technology, 2013)
The goal of this thesis is to develop a control strategy for airport operations that integrates the management of arrivals and departures. The strategy is based on four central ideas: (1) the objective of reducing aircraft ...
Scalable online nonlinear goal-oriented inference with physics-informed maps
(Massachusetts Institute of Technology, 2019)
This thesis develops a physics-informed k-nearest neighbors approach, which draws from both physics-based modeling and data-driven machine learning. In doing so, our method achieves robustness and increased accuracy with ...