Index Catalog // ScholarsArchive@OSU

Wing Flutter Suppression via Distributed Electric Propulsion

Creator:: Bamberger, Joshua
Abstract:: This research aims to demonstrate the viability of actively controlled distributed-electric propulsion as a method to postpone flutter in high aspect-ratio elastic wings. A semi-wing on a spring mount with two propellers powered by electric motors, mounted at alternate pitch angles relative to the chord line, was used as the...
Resource Type:: Honors College Thesis
Full Text:: 5 Hodges D., Pierce G., Introduction to Structural Dynamics and Aeroelasticity, Cambridge

Wind turbulence input model for horizontal axis wind turbines

Creator:: Lin, Shuh-ren
Abstract:: In order to estimate wind turbine residL2;characteristics in the presence of atmospheric turbulence, the important atmospheric sources for the force excitations felt by the wind turbine system must be identified and characterized. The goal of this research is to develop the wind turbulence input model for horizontal axis wind turbines....
Resource Type:: Dissertation
Full Text:: at stage k c(1)(k) Scalar, see Eq. (4.54) d(k) Y(k)i(k) e n The approximation error including

Wind tunnel simulation and field measurements of flow over a coastal headland

Creator:: Brownlow, Roger West
Abstract:: An experimental study was made of the average and turbulent wind characteristics of the flow over a model of a coastal headland. The scale of the model was 300:1, corresponding to a prototype size of 500 m. The data for validation of the model study was obtained from instruments mounted...
Resource Type:: Dissertation
Full Text:: the Oregon P. U. D. Directors' Association. TABLE OF CONTENTS Chapter page I.. INTRODUCTION 1

Wave Energy From Idea, to Concept, to Converter: Structuring Methods for Design and Evaluation of Wave Energy Devices

Creator:: Trueworthy, Ali May
Abstract:: The amount of energy we use and the ways that we get that energy sit on the edge of dramatic change as the carbon budget which can keep the planet under 1.5C of global average temperature increase gets smaller (Allen, 2018). In response, we continue to research and develop renewable...
Resource Type:: Masters Thesis

Wave Energy Converter Array Optimization : Algorithm Development and Investigation of Layout Design Influences

Creator:: Sharp, Christopher J.
Abstract:: Realizing the vast amount of energy available in ocean waves, an industry has emerged that is progressing towards the deployment of grid–connected wave energy converters. Likely to be deployed in arrays, a challenge to the wave energy industry is maximizing the energy production of such arrays. We have been developing...
Resource Type:: Dissertation
Full Text:: difference comes from the crossover process that occurs in a GA. Both the EA and the GA include mutation d

Water treatment technologies for the developing world

Creator:: Burleson, Grace Ellen
Abstract:: The intent of this report is to provide a brief description of water quality issues in Nicaragua, Uganda and Bangladesh, and the technologies available to address these issues. The water quality parameters considered include: bacterial contamination, heavy metals and arsenic, pesticides and industrious chemicals, turbidity, radiological characteristics, and taste and...
Resource Type:: Honors College Thesis
Full Text:: ............................... 48 Appendix D: Testing Results for Original BSF with No Biofilm

Vortical Structures in Transition to Turbulence through Randomly Packed Porous Media: Scale, Energy, and Mixing Characteristics

Creator:: Mohammadi Ziazi, Reza
Abstract:: Vortical structures are the driving mechanism of transition to turbulence in porous media requiring adequately resolved observations along with analysis of the scale and energy of ﬂow within the pores. Of speciﬁc interest is to understand the vortex dynamics, energy, and turbulent mixing and transport properties in the scale of...
Resource Type:: Dissertation
Full Text:: at Rep = 272, (c) Plane PL-4 at Rep = 270, (d) Plane PL-6 at Rep = 528, (e) Plane PL-6 at Rep = 736

Vortex Generator Flow Control for an Upper-Surface Blown Aircraft Wing with an Extended Coanda Flap

Creator:: Kelly, Bryan R.
Abstract:: Integrated Distributed Electric Augmented Lift (IDEAL) applies upper-surface blowing in a novel way using an array of electric ducted fans (EDFs) to achieve electric short take-off and landing to meet the growing need for urban air transportation. Additional research on the use of vortex generators (VGs) to reduce flow separation...
Resource Type:: Masters Thesis
Full Text:: angle of incidence, D is the spacing between vanes (or VG pairs for counter-rotating), and d is the

Volumetric receiver development : a heat transfer and design evaluation of an advanced air heating solar thermal central receiver concept

Creator:: Drost, M. K.
Abstract:: The volumetric receiver is an advanced solar central receiver concept designed to produce high temperature air. This document presents the results of a heat transfer and performance evaluation of the volumetric receiver concept. The volumetric receiver consists of an array of ceramic fins or fibers arranged in concentric rows around...
Resource Type:: Dissertation
Full Text:: APPENDIX D SHROUD EXCHANGE FACTOR CALCULATIONS 254 LIST OF FIGURES Figure Page 1.1 Schematic

Void fraction variations in a fractal-like branching channel network

Creator:: Cullion, Rebecca
Abstract:: Two-phase flow in a fractal-like branching microchannel heat sink may have enhanced heat transfer capabilities over single phase flow in the same branching channel network. In order to exploit this potential, a complete understanding of flow boiling in this geometry is required. The fractal-like geometry is similar to that of...
Resource Type:: Dissertation
Full Text:: NWPbase: number of white pixels in base image Q: heat flux (W /cm 2 ) R: resistance (D) Tsat

ScholarsArchive@OSU

Wing Flutter Suppression via Distributed Electric Propulsion

Wind turbulence input model for horizontal axis wind turbines

Wind tunnel simulation and field measurements of flow over a coastal headland

Wave Energy From Idea, to Concept, to Converter: Structuring Methods for Design and Evaluation of Wave Energy Devices

Wave Energy Converter Array Optimization : Algorithm Development and Investigation of Layout Design Influences

Water treatment technologies for the developing world

Vortical Structures in Transition to Turbulence through Randomly Packed Porous Media: Scale, Energy, and Mixing Characteristics

Vortex Generator Flow Control for an Upper-Surface Blown Aircraft Wing with an Extended Coanda Flap

Volumetric receiver development : a heat transfer and design evaluation of an advanced air heating solar thermal central receiver concept

Void fraction variations in a fractal-like branching channel network

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