Index Catalog // ScholarsArchive@OSU

The effects of ocean variability and breaking waves on wave energy converter reliability and survivability

Creator:: Brown, Adam
Abstract:: The reliability and survivability of a wave energy converter (WEC) is highly dependent on the variability and non-linearity of the ocean itself. Ocean variability occurs on many time scales. Climate variability occurs decade-to-decade, and year-to-year in the number and intensity of winter storms. Seasonal variation of wave height and period...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Adam Brown for the degree

Structure and Actuation of Cephalopod-Inspired Soft Robots

Creator:: Olson, Gina M.
Abstract:: Cephalopod-inspired soft robot arms have been studied as a new type of manipulator. These arms have been proposed for reach and grab tasks, underwater locomotion via swimming and walking, and robotic surgery. However, the capabilities of existing soft arms are limited to simple motions and light loads. Arm design has...
Resource Type:: Dissertation

Hydroelastic modeling of a wave energy converter using the arbitrary Lagrangian-Eulerian finite element method in LS-DYNA

Creator:: Meicke, Stephen A.
Abstract:: This thesis investigates the applicability of the finite element method to model wave energy converter (WEC) hydroelasticity using LS-DYNA. The proposed methodology uses the Arbitrary Lagrangian-Eulerian formulation to model Fluid-Structure Interaction (FSI) between the WEC and the fluid elements. This formulation allows for time-domain modeling of higher order effects such...
Resource Type:: Masters Thesis
Full Text:: -Stokes solver to determine body forces as a result of fluid-structure interaction (FSI). FSI in LS

Modelling Thin Liquid Film Draining of Bubbles on Porous Media in Confined Geometry

Creator:: Bahm, Jared S.
Abstract:: The behavior of the thin liquid ﬁlm formed between a bubble and hydrophobic membrane is of high interest in applications where separating two-phase mixtures is beneﬁcial. One such application is in-situ vapor extraction heat sinks. In these systems, high heat transfer rates are accomplished by taking advantage of the high...
Resource Type:: Masters Thesis
Full Text:: this work, the Stokes-Reynolds-Young-Laplace (SRYL) lubrication model is stud- ied and adapted to the

Predicting deep water breaking wave severity

Creator:: Hovland, Justin
Abstract:: Ocean Wave Energy Converters (WECs) operating on the water surface are subject to storms and other extreme events. In particular, high and steep waves, especially breaking waves, are likely the most dangerous to WECs. A method for quantifying the breaking severity of waves is presented and applied to wave data...
Resource Type:: Masters Thesis
Full Text:: - Adam, Pukha, Kelley and Steve - have all helped me greatly by reviewing my work, hashing things out

Modeling, simulation, and analysis of two hydraulic power take-off systems for wave energy conversion

Creator:: Casey, Sean (Sean Michael)
Abstract:: Hydraulic power take-off (PTO) systems have been implemented in several wave energy converter (WEC) designs in recent years. Two popular hydraulic PTO configurations coupled to a point absorber hydrodynamic model are simulated in waves representative of an energetic sea state likely to be found in deep waters off the coast...
Resource Type:: Masters Thesis
Full Text:: Northwest National Marine Renew able Energy Center, especially Blake Boren and Adam Brown—our

The energy extraction performance of an oscillating rigid and flexible foil

Creator:: Totpal, Alexander D.
Abstract:: The aerodynamic performance of an oscillating pitching and plunging foil operating in the energy harvesting mode is investigated. Experiments are conducted in a closed-loop recirculating wind tunnel at Reynolds numbers of 24,000 to 48,000, and reduced frequencies (k = fc/u) of 0.042 to 0.083. Foil kinematics are varied through the...
Resource Type:: Masters Thesis
Full Text:: incompressible two-dimensional inviscid panel code as well as a two-dimensional Navier-Stokes viscid solver for

Work Experience and Improvement Behavior: A Preliminary Study

Creator:: Azhar, Mina
Abstract:: Improvement behaviors, specifically double loop, have been linked to successful lean implementations. Although the lean literature supports individual cognitive transformation to double loop learning as an important element of lean success, there remains a strategic methodology to achieve sustainable double loop behavior. Perceptions toward behavior and employee satisfaction have been...
Resource Type:: Dissertation

Experimental Investigations of the Unsteady Aerodynamics of Oscillating Airfoils Operating in the Energy Harvesting Regime

Creator:: Siala, Firas F.
Abstract:: The rising global trend to reduce dependence on fossil fuels has provided significant motivation toward the development of alternative energy conversion methods and new technologies to improve their efficiency. Recently, oscillating energy harvesters have shown promise as highly efficient and scalable turbines, which can be implemented in areas where traditional...
Resource Type:: Dissertation
Full Text:: by solving the pressure Poisson equation given by the divergence of the Navier-Stokes equations

Computational Investigation on the Effects of Arc Location in Vacuum Arc Remelting

Creator:: Soler, Miguel
Abstract:: Vacuum arc remelting (VAR) is a secondary melting process for exotic alloys. The main purpose of this process is to increase the input ingot’s physical and chemical homogeneity. This is accomplished through the application of a high current that melts the material through the emergence of electrical arcs that induce...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The effects of ocean variability and breaking waves on wave energy converter reliability and survivability

Structure and Actuation of Cephalopod-Inspired Soft Robots

Hydroelastic modeling of a wave energy converter using the arbitrary Lagrangian-Eulerian finite element method in LS-DYNA

Modelling Thin Liquid Film Draining of Bubbles on Porous Media in Confined Geometry

Predicting deep water breaking wave severity

Modeling, simulation, and analysis of two hydraulic power take-off systems for wave energy conversion

The energy extraction performance of an oscillating rigid and flexible foil

Work Experience and Improvement Behavior: A Preliminary Study

Experimental Investigations of the Unsteady Aerodynamics of Oscillating Airfoils Operating in the Energy Harvesting Regime

Computational Investigation on the Effects of Arc Location in Vacuum Arc Remelting

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