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 12 of 12 for “"Work input"”.
-
Effects of upstream wake phasing on the performance of transonic compressors
The effect of the upstream wake phase on the work input (i.e., rise in stagnation enthalpy across the blade row) of a transonic rotor is examined computationally and analytically. It is found that the compressor work depends on the path followed by the wake vortices as they travel through the rotor …
-
A comprehensive model of electric-field-enhanced jumping-droplet condensation on superhydrophobic surfaces
… field interactions. In this work, I developed a comprehensive physical model for EFE condensation on superhydrophobic surfaces by incorporating individual droplet motion, electrode geometry, jumping frequency, field strength, and condensate vapor-flow dynamics. As a first step …
-
Atmospheric Carbon Capture: A Review on Current Technologies and Analysis of Energy Consumption for Various Direct Air Capture (DAC) Systems
… theories is evaluated to determine the required work input of the system at various inlet compression ratios and various inlet temperatures. Turbine recovery is also considered for the potential to capture “waste energy.” A pressure swing adsorption unit is evaluated as another modification to …
-
Impact of unsteady flow processes on the performance of a high speed axial flow compressor
… the shed vortices. Entropy production and rotor work input depend on the vortex trajectory within the rotor, which in turn depends on the ratio of time scales: the time for vortex convection between blade rows, and the rotor period (i.e. the time for the rotor to move one rotor pitch), for a …
-
Variable pitch fan aerodynamics
… and drag by eliminating thrust reversers. The work in this thesis looks to further understanding of the aerodynamic performance of variable pitch fans in forward and reverse thrust operation. In forward operation, the aims are to evaluate the aerodynamic performance variation with stagger …
-
Rheology of chocolate. Rheological studies of chocolate in relation to their flow and mixing properties during manufacture.
… able to provide this duty. The experimental work involved rheological studies with concentric cylinder and tubular viscometers, operated to measure viscosity as a function of shear rate and shearing time. The chocolate samples studied were taken from various points in the manufacture process …
-
Buckling and growth of disbonds in honeycomb sandwich structure
… A characteristic growth curve, defining the work input required to initiate disbond growth, was developed and agreed with specimen test results with an average difference of 3.3%. The model also verified that disbond growth occurs in discrete increments approximately equal to the diameter of …
-
Developmental underpinnings of expectations of equity and attitudes toward resource disparities
… an experimenter to allocate praise based on work input, and they accordingly found equal praise for unequal work and unequal praise for equal work unexpected. In Experiment 2, 21-month-old infants expected an experimenter to punish individuals based on their misdeeds. Infants’ expectations …
-
Inlet Recirculation in Radial Compressors
… a strong positive swirl component, affecting the work input into the machine. The phenomenon is non-periodic in a time-averaged sense. An investigation of the rotor flow-field regarding inlet recirculation, carried out for the first time, revealed that the starting point of inlet recirculation is …
-
Measurement and Uncertainty Analysis of Transonic Fan Response to Total Pressure Inlet Distortion
… analysis techniques developed in this work is the identification of the dominant error sources that resulted in unacceptable uncertainties. This dissertation presents an experimental study of transonic fan response to inlet total pressure distortion. A Pratt and Whitney JT15D-1 turbofan …
-
The Effects of External Factors on Social Work Practitioners’ Ethical Decision-Making with Hospital Discharges: An Interpretative Phenomenological Enquiry
… phenomenological enquiry into social work practitioners’ lived experience of their ethical decision-making and what the outside factors are that influence it. It contributes to the body of knowledge in that it records the lived-experiences of social work practitioners’ ethical …
-
Computer-aided contributions to the study of Irish dialects
… decades ago, without computers in mind, and the work which follows may be considered as an attempt to graft computer technology onto traditional dialect research methodology. However, in view of the benefits gained from this combination of disciplines, we hope that a foundation has been laid for …