Scholarly Works, Mechanical Engineering

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https://hdl.handle.net/10919/23262
Research articles, presentations, and other scholarship

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Browsing Scholarly Works, Mechanical Engineering by Content Type "Presentation"

Now showing 1 - 4 of 4
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    Cultivating Emerging & Black Swan Technologies
    Mahajan, Roop L. (2012-09-15)
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    Friction Studies – From Passive to Intelligent Tires
    Taheri, Saied (2014-09-01)
    A major problem in highway safety and traffic engineering is to understand the mechanisms of friction between the tire and the road. Pavement surface texture significantly contributes to tire-pavement friction. Several researchers have claimed that road profiles are fractal, and that this fractality is related to the friction properties of the road. The objective here is to present texture properties and contact mechanics that can predict tire-pavement friction.
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    The study of droplet internal circulation and its interaction with droplet deformation
    Lin, Yushu; Palmore, John A., Jr. (2023-11-19)
    The study of liquid droplet is important for applications like spray-painting, fire suppression, and spray combustion. Droplet morphology has a great impact in these applications, for example, in spray conditions, droplets of various sizes are generated from jet atomization, and the large droplets have strong deformation. The highly deformed droplets have very different characteristics compared to spherical droplets, but many studies on droplet dynamics are based on the spherical droplet assumption. To develop a more accurate modeling of liquid droplet in jet simulations, we use numerical approaches to investigate the mechanism of droplet deformation. Weber number, which measures the balance of surface tension and inertia, is a key non-dimensional group that quantifies droplet deformation. However, droplets with same Weber number do not always have an identical shape. For example, our previous work[Lin and Palmore, 2022] demonstrated that internal circulation also influences droplet shape. Therefore, a deeper understanding in droplet internal circulation is needed. In this work, we will explore a wider range of droplet parameters relevant to a wide array of applications for droplets to study the interaction between droplet internal circulation and deformation.
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    Towards Use And Reuse Driven Big Data Management
    Xie, Zhiwu; Chen, Yinlin; Griffin, Julie; Walters, Tyler; Tarazaga, Pablo Alberto; Kasarda, Mary E. (2015-06-03)
    We propose a use and reuse driven big data management approach that fuses the data repository and data processing capabilities in a co-located, public cloud. It answers to the urgent data management needs from the growing number of researchers who don’t fit in the big science/small science dichotomy. This approach will allow researchers to more easily use, manage, and collaborate around big data sets, as well as give librarians the opportunity to work alongside the researchers to preserve and curate data while it is still fresh and being actively used. This also provides the technological foundation to foster a sharing culture more aligned with the open source software development paradigm than the lone-wolf, gift-exchanging small science sharing or the top-down, highly structured big science sharing. To materialize this vision, we provide a system architecture consisting of a scalable digital repository system coupled with the co-located cloud storage and cloud computing, as well as a job scheduler and a deployment management system. Motivated by Virginia Tech’s Goodwin Hall instrumentation project, we implemented and evaluated a prototype. The results show not only sufficient capacities for this particular case, but also near perfect linear storage and data processing scalabilities under moderately high workload.