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Articles 1 - 5 of 5
Full-Text Articles in Engineering
Effective-Medium Theories For Predicting Hydrodynamic Transport Properties Of Bidisperse Suspensions, Ashok S. Sangani, Sangkyun Koo
Effective-Medium Theories For Predicting Hydrodynamic Transport Properties Of Bidisperse Suspensions, Ashok S. Sangani, Sangkyun Koo
Biomedical and Chemical Engineering - All Scholarship
Effective-medium theories for predicting conditionally averaged velocity field and hydrodynamic transport coefficients of monodisperse suspensions are extended to bidisperse suspensions. The predictions of the theory are shown to agree very well with the results of direct numerical simulations of bidisperse suspensions with hard-sphere configurations up to volume fractions at which phase separation in bidisperse hard-sphere systems are observed.
Finite-Weber-Number Motions Of Bubbles Through A Nearly Inviscid Liquid, Ashok S. Sangani, Volodynmyr I. Kushch, Peter D. M. Spelt, Donald L. Koch
Finite-Weber-Number Motions Of Bubbles Through A Nearly Inviscid Liquid, Ashok S. Sangani, Volodynmyr I. Kushch, Peter D. M. Spelt, Donald L. Koch
Biomedical and Chemical Engineering - All Scholarship
A method is described for computing the motion of bubbles through a liquid under conditions of large Reynolds and finite Weber numbers. Ellipsoidal harmonics are used to approximate the shapes of the bubbles and the flow induced by the bubbles, and a method of summing flows induced by groups of bubbles, using a fast multipole expansion technique is employed so that the computational cost increases only linearly with the number of bubbles. Several problems involving one, two and many bubbles are examined using the method. In particular, it is shown that two bubbles moving towards each other in an impurity-free, …
Enabling Dynamic Market-Managed Qos Interconnection In The Next Generation Internet By A Modified Bgp Mechanism, Junseok Hwang, Jorn Altmann, Huw Oliver, Alfonso Suarez
Enabling Dynamic Market-Managed Qos Interconnection In The Next Generation Internet By A Modified Bgp Mechanism, Junseok Hwang, Jorn Altmann, Huw Oliver, Alfonso Suarez
School of Information Studies - Faculty Scholarship
We propose a market-managed QoS (Quality of Service) interconnection model for heterogeneous networking environments. The deployment of this model will help autonomous systems to reduce the cost of their network services as well as increase social welfare. We describe a technical solution for a next generation Internet, where networks are managed based on either technology requirements (QoS networks) or market principles (market-managed networks). Our solution requires two technologies: BMP (Bandwidth Management Point) and a modified version of BGP (Border Gateway Protocol). The modified version of BGP, as proposed in this paper, provides additional routing exchange information such as price and …
Discontinuities And Continuities: A New Way To Understand Virtual Work, Mary Beth Watson-Manheim, Kevin Crowston, Katherine M. Chudoba
Discontinuities And Continuities: A New Way To Understand Virtual Work, Mary Beth Watson-Manheim, Kevin Crowston, Katherine M. Chudoba
School of Information Studies - Faculty Scholarship
“Virtual” is a potent buzzword, freely applied to many situations, with many meanings. In this exploratory study, we develop a more precise understanding of "virtual" to describe changing work environments. Specifically, we propose a framework to classify work environments based on the type of discontinuities involved. Discontinuities are gaps or a lack of coherence in aspects of work. The framework allows us to compare research across different topics and work settings. We use the framework to classify 75 published articles on virtual work environments or earlier, related research streams. We observed that many studies were simultaneously addressing existing or emerging …
Exploring Strengths And Limits On Open Source Software Engineering Processes: A Research Agenda, Kevin Crowston, Barbara Scozzi
Exploring Strengths And Limits On Open Source Software Engineering Processes: A Research Agenda, Kevin Crowston, Barbara Scozzi
School of Information Studies - Faculty Scholarship
Many researchers have investigated the nature and characteristics of open source software (OSS) projects and their developer communities. In this position paper, after examining some success factors, we discuss potential limits on the replicability and portability of OSS engineering processes. Based on this analysis, we propose a research agenda to better understand the current nature of the processes and thus the strengths and the limitations.