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Numerical Simulations of Incompressible and Compressible Transitional Turbine Flows
(North Dakota State University, 2014)
Accurate and reliable turbulence and transition models are needed for prediction heating loads in the hot section of the turbine, and predicting aerodynamic losses when designing new blade profiles. Two dimensional ...
Evaluation of Mechanical Properties of Al-Cu Cold Sprayed and Alloy 625 Wire Arc Sprayed Coatings
(North Dakota State University, 2014)
This study examines microstructural-based mechanical properties of Al-Cu composite deposited by cold spraying and wire arc sprayed nickel-based Alloy 625 coating using numerical modeling and experimental techniques. The ...
Influence of the Biaxiality Ratio on Multiaxial Fatigue of Metallic Materials
(North Dakota State University, 2014)
The ability to model and predict multiaxial fatigue life without being too aggressive or conservative is of great interest to engineers. The purpose of this study was to examine the influence of the biaxiality ratio (σ2/σ1) ...
Characterizing the Operation of a Dual-Fuel Diesel-Hydrogen Engine near the Knock Limit
(North Dakota State University, 2014)
A CAT C6.6 turbocharged diesel engine was operated in dual-fuel diesel-hydrogen mode. Hydrogen was inducted into the intake and replaced a portion of the diesel fuel. Hydrogen was added across multiple engine speeds and ...
Ultra-Violet Degradation Behavior of Polymeric Backsheets of Photovoltaic Modules
(North Dakota State University, 2014)
This study is designed to understand the ultra-violet (UV) degradation of polymeric backsheets used in PV modules. Commercial photovoltaic backsheets from four suppliers were UV-aged for up to 3000 hours. The aged samples ...
Stress-Function Variational Method for Stress Analysis of Adhesively Bonded Joints
(North Dakota State University, 2014)
Recently, adhesively bonded joints (ABJs) has found more rapidly increasing applications in aerospace and aeronautical structures, ground vehicles, and flexible electronics than mechanical fastening and welding technologies. ...
Modeling and Optimal Control of Curvatures in IPMC's
(North Dakota State University, 2014)
There has been a growing number of research activities in the area of using smart materials in day to day lives because of their ability to serve both as sensors and actuators. Ionic Polymer Metal Composites (IPMCs) are ...
The Dynamics of Viscous Droplets near Micro-Patterned Solid Surfaces in Creeping Flow
(North Dakota State University, 2014)
The interaction between droplets and solid surfaces is of great importance in industrial applications, biochemical processes, and fundamental materials research on surface wettability. In this work, a three-dimensional ...
Theoretical Study on Thin Film Dye Sensitized Photovoltaic Solar Cells
(North Dakota State University, 2014)
This thesis presents two models of a dye-sensitized solar cell (DSC): diffusion model and electrical model. The main purpose is to investigate interfacial charge transfer and charge transport within the semiconductor/electrolyte ...