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Filtering by: Creator Piola, Alberto R. Remove constraint Creator: Piola, Alberto R. Academic Affiliation Mechanical, Industrial, and Manufacturing Engineering Remove constraint Academic Affiliation: Mechanical, Industrial, and Manufacturing Engineering

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  • Condensation of a zeotropic mixture, R-454C, and its individual components, R-1234yf and R-32, in microfin tubes

    Creator:
    Matty, Ethan P.
    Abstract:
    This work compares the condensation heat transfer and pressure drop for zeotropic refrigerant R-454C and its individual components, R-32 and R-1234yf, in horizontal microfin tubes. One microfin tube has a 4 mm outer diameter, 0.18 mm wall thickness, and a surface area ratio of 1.56. The second tube has a...
    Resource Type:
    Masters Thesis
    Full Text:
    a Zeotropic Mixture, R-454C, and its Individual Components, R-1234yf and R-32, in Microfin Tubes

  • Evaluation of the predictive capability of two-phase flow maps for microchannel condensation of R-134a at low mass flux conditions

    Creator:
    VanderPutten, Michael A.
    Abstract:
    Predicting condensation flow regimes and the associated heat transfer and pressure drop in microchannels is critical for designing terrestrial and space systems for heating, cooling, power generation, and advanced manufacturing. It is well established that in flows approaching the microscale (Dh < 1 mm) gravity-dominated flow regimes become less relevant,...
    Resource Type:
    Masters Thesis
    Full Text:
    : Evaluation of the Predictive Capability of Two-Phase Flow Maps for Microchannel Condensation of R-134a at

  • Pre-Prototyping Framework: An Early Design Prototyping Methodology for Human-Centered Products and Workplaces

    Creator:
    Ahmed, Salman
    Abstract:
    Prototyping is a crucial step in product design and development, but it is also known as the highest sunk cost. The top 20 Research and Development (R&D) department spends 142 billion dollars, yet 40 to 46 percent of this money goes into developing products that cannot even make to the...
    Resource Type:
    Dissertation
    Full Text:
    is also known as the highest sunk cost. The top 20 Research and Development (R&D) department spends

  • Investigation of In-tube Non-equilibrium Condensation of Low Global Warming Potential Refrigerants

    Creator:
    Jacob, Tabeel A.
    Abstract:
    This work investigates the in-tube condensation of low global warming potential (GWP) zeotropic refrigerant mixtures R448A, R450A, R452A, R454B and R454C. These refrigerants have been proposed for a wide range of commercial heating, ventilation, air-conditioning applications, but their heat and momentum transport phenomenon were not well understood. Thus, in this...
    Resource Type:
    Dissertation
    Full Text:
    process, and heating, ventilation, cooling, air condition- ing, and refrigeration (HVAC&R). It differs

  • LPBF and Post Processing of H13 Tool Steel

    Creator:
    Alabdulali, Ali
    Abstract:
    Laser powder bed fusion (LPBF) is an innovative method where metal powder is fused together to generate complex geometries. LPBF is used as a technology to reduce material waste, and extensive labor that are often linked to conventional subtractive manufacturing. H13 tool steel is one of the widely used materials...
    Resource Type:
    Masters Thesis
    Date Created:
    2023-08-31
    Full Text:
    . "Additive manufacturing of structural materials." Materials Science and Engineering: R: Reports 145 (2021

  • Robotic deburring

    Creator:
    James, Francis
    Abstract:
    Deburring of machined parts is a crucial task in the aerospace and automotive industry. This process is still performed manually to a large extent due to the unpredictability of burr formation as well as the complex interactions between the human arm and the workpiece. Poor ergonomics, repetitive stress and strain...
    Resource Type:
    Masters Thesis

  • A Preliminary Methodology For Automating Functional Modeling

    Creator:
    Edmonds, Katherine N.
    Abstract:
    This thesis is the combination of two research publications working towards automating functional modeling. Functional modeling is an underutilized yet critical tool for concept generation and product design. Understanding the difficulty both novice and expert designers have in implementing functional modeling in their design process, this research sets out to...
    Resource Type:
    Masters Thesis

  • Ground Gen Airborne Wind Energy Conversion Systems: Tools for Conceptual Design and Rapid Prototyping

    Creator:
    Muschler, Alexander
    Abstract:
    Airborne Wind Energy System (AWES) are quickly coming to fruition, with increased energy production while reducing the cost of implementation and materials. This thesis develops a new computational model for a tethered AWES and characterizes a new rapid prototyping method with the objective of supporting the design and rapid prototyping...
    Resource Type:
    Masters Thesis
    Full Text:
    Alberto Garinei analyzed the possibilities of harnessing high wind potential through the use of an

  • Achieving Transparency in Human-Collective Systems

    Creator:
    Roundtree, Karina A.
    Abstract:
    Collective robotic systems are biologically-inspired and exhibit behaviors found in spatial swarms (e.g., fish), colonies (e.g., ants), or a combination of both (e.g., bees). Collective robotic system popularity continues to increase due to their apparent global intelligence and emergent behaviors. Many applications can benefit from the incorporation of collectives, including...
    Resource Type:
    Dissertation
    Full Text:
    Dr. Michael Goodrich, Dr. Jason R. Cody, Dr. Jamison Heard, Dr. Gina Olson, Dr. Gilberto Marcon dos

  • A comparison of single runs versus multistart for simulated annealing and threshold accepting

    Creator:
    Crews, Matthew
    Abstract:
    Simulated Annealing and Threshold Accepting are two stochastic search algorithms that have been successfully used on a variety of complex and difficult problem sets. Due to their stochastic nature they are not guaranteed to produce the same result for each run. This means that these techniques actually produce a distribution...
    Resource Type:
    Masters Thesis