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Filtering by: DOI 10.1007/s10745-015-9734-4 Remove constraint DOI: 10.1007/s10745-015-9734-4 Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • Evaluation of Materials for Use in Open-Cycle Magnetohydrodynamic Power Generation

    Creator:
    Bowen, Michael S.
    Abstract:
    Recent interest in oxy-fuel combustion for carbon capture, as well as advancements in technologies such as magnetics, materials, and computational modeling has sparked renewed interest in magnetohydrodynamic (MHD) power generation. The increased temperatures of oxy-fuel combustion versus air-fuel combustion poses a challenge in the selection of materials for plasma exposed...
    Resource Type:
    Masters Thesis
    Full Text:
    _________________________________________________________ 61 3.6. Bibliography _________________________________________________________ 62 4. The Yttria

  • Assessing Mass Diffusion Modeling in Premixed Flames

    Creator:
    Fillo, Aaron J.
    Abstract:
    Implementing multicomponent diffusion in numerical combustion studies is computationally expensive due to the challenges involved in computing diffusion coefficients. As a result, mixture-averaged diffusion treatments or simpler methods are used to avoid these costs. However, the accuracy and appropriateness of the mixture-averaged diffusion model has not been verified for three-dimensional...
    Resource Type:
    Dissertation
    Full Text:
    Hamlington is a co-author on the manuscript presented in Chapter 4 and assisted with data interpretation and

  • Effect of Laser Powder Bed Fusion Parameters and Hot Isostatic Pressing on the Microstructure and Mechanical Properties of C22 Alloy

    Creator:
    Yan, Dongqing
    Abstract:
    A nickel-based Hastelloy C22 powder with a nominal composition of Ni-21.30Cr-13.36Mo-1.92Co-2.94W-3.85Fe-0.23Mn-0.3V(wt%) and particle size distribution of D₁₀=23.8±0.3 μm, D₅₀=37.5±0.2μm, and D₉₀=59.3±1.1 μm was gas atomized to be used as a feedstock in Laser Powder Bed Fusion (LPBF). In this study, laser power and scanning speed were optimized to manufacture specimens...
    Resource Type:
    Masters Thesis
    Full Text:
    review, Front. Mech. Eng. 10 (2015) 111–125. https://doi.org/10.1007/s11465-015-0341-2. [14] Z. Tian

  • Computational Modeling of Smoldering Combustion in Wildland Fuels

    Creator:
    Jayasuriya, Waduge Jayani A.
    Abstract:
    Smoldering combustion in wildland fires is a critical phenomenon that needs in-depth study because it can initiate with weaker ignition sources, can persist for long periods, is difficult to suppress, and can transit to flaming combustion. Cellulose, hemicellulose, and lignin are the major organic constituents within biomass, in varying proportions...
    Resource Type:
    Dissertation
    Full Text:
    contract number W912HQ-16-C-0045. TABLE OF CONTENTS Page 1 Introduction 1 2 Background 4 2.1

  • Synthetic Lubricant Performance in Enclosed Gearbox Applications at Extreme Temperature

    Creator:
    Marr, Carter J.
    Abstract:
    The goal of this paper is to evaluate how synthetic lubricants perform in an enclosed gearbox application when compared with a proven mineral oil. This is in an effort to improve gearbox efficiency with the desired effect of lower emissions from of improved energy output from power generation. Four liquid...
    Resource Type:
    Masters Thesis
    Full Text:
    lubricants in enclosed gearbox applications 4 2.1 Introduction

  • Soot Modeling: GPU Accelerated Direct Simulation Monte Carlo

    Creator:
    Lorson, Paige
    Abstract:
    For this project, we designed a soot modeling software to produce a full particle density function. This model uses the Direct Simulation Monte Carlo with a full conditioning particle selection method to capture soot nucleation and coagulation in a diffusion flame. We investigate the use of graphic processing units as...
    Resource Type:
    Capstone Project
    Full Text:
    , pp. 689–697. isbn: 978-0-387-09766- 4. doi: 10.1007/978-0-387-09766-4_2. url: https://doi.org

  • Numerical and Analytical Evaluation of Residual Stresses in Deep Rolling

    Creator:
    Nelson, Dallas
    Abstract:
    Deep rolling is a surface finishing technique that is widely used in several industries, specifically aerospace and automotive. Extending fatigue life by inducing compressive residual stresses at and below the deep rolled surface has been the primary driving force behind this newfound popularity. Understanding the development of the residual stresses...
    Resource Type:
    Masters Thesis
    Full Text:
    described in chapter 3 and presented in chapter 4 was performed by the industry sponsor of this research

  • An Information Modeling Framework for Support of Sustainable Manufacturing System Design Decision Making

    Creator:
    Shankar Raman, Arvind
    Abstract:
    Manufacturing technology has continuously evolved and advanced over the past century; this has led to an increase in the production of consumer and industrial goods driven by simultaneous growth in population and wealth. Despite the resulting economic and labor growth, environmental impacts of manufacturing have increased dramatically due to the...
    Resource Type:
    Dissertation
    Full Text:
    process flows composed of UMPs, which is demonstrated for a discrete part manufacturing system; and (4

  • Temperature Evolution of Spark Kernels in Quiescent and Cross-flow Conditions

    Creator:
    Okhovat, Sebastian
    Abstract:
    Numerous physical and chemical processes are required for successful ignition of a flammable mixture, many of which have been well characterized. However, one aspect of the ignition process that has received limited consideration is understanding the temperature of the spark kernel. A spark kernel is the volume of heated gas...
    Resource Type:
    Masters Thesis
    Full Text:
    ................................................................................................................... 4 2.2.1. Spatial and Temporal Development

  • Additive Manufacturing of FeCrCoCuNi High Entropy Alloy via Laser Powder Bed Fusion and Nickel Aluminum Bronze via Laser Directed Energy Deposition

    Creator:
    Doyle, Ryan P.
    Abstract:
    High Entropy Alloys (HEA) exhibit unusual properties and are gaining interest as new materials for challenging applications in the aerospace, hypersonic and medical fields. The application of HEAs have been limited by the development of powder production at scale. A recently developed process of plasma spheroidization by 6K, inc. has...
    Resource Type:
    Masters Thesis
    Full Text:
    Literature Review…………………...……………………………………… 4 Chapter 2. Laser Powder Bed Fusion of FeCrCoCuNi High