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  • Jan
    14

    Continuum Modeling of Flow and Size-Segregation in Dense Granular Materials [copy]

    McCormick - Civil and Environmental Engineering

    10:00 AM

    EVENT DETAILSmore info

    TAM SEMINAR PRESENTS:
    David L. Henann
    James R. Rice Associate Professor of Solid Mechanics
    Brown University

    Abstract
    Dense granular systems that consist of particles of disparate size segregate based on size during flow, resulting in complex, coupled segregation and flow fields. In this talk, we study size-segregation phenomenology using discrete-element method (DEM) simulations of dense, bidisperse particles and propose a continuum model for coupled size-segregation and flow in dense, bidisperse granular systems. In our DEM simulations, we consider four flow geometries: (1) gravity-driven flow down a long vertical chute, (2) annular shear flow, (3) gravity-driven flow down a rough, inclined surface, and (4) planar shear flow in the presence of gravity - all while varying system parameters, such as the flow rate, system size, fraction of large/small grains, and grain-size ratio. Selected DEM simulation data inform continuum constitutive equations for the relative flux of large and small particles. The segregation model accounts for two driving forces - shear-strain-rate-gradients and pressure-gradients. When coupled with the nonlocal granular fluidity model - a nonlocal continuum model for dense granular flow - we show that both flow fields and segregation dynamics may be simultaneously captured using the coupled, continuum model.

    Biography
    David L. Henann is the James R. Rice Associate Professor of Solid Mechanics at Brown University. He received his B.S. in Mechanical Engineering from Binghamton University in 2006, followed by his S.M. and Ph.D. in Mechanical Engineering from MIT in 2008 and 2011, respectively. After postdoctoral appointments at MIT and Harvard, he joined the faculty at Brown University in the fall of 2013. His research focuses on the formulation of new continuum-level constitutive theories for describing material behavior and the quantitative modeling of material behavior through numerical simulation. Henann is the recipient of an NSF CAREER Award and the 2016 Pi Tau Sigma Gold Medal from the American Society of Mechanical Engineers (ASME).

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    TIME Thursday, January 14, 2021 at 10:00 AM - 11:00 AM

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    CONTACT Alison Rodriguez    alison.rodriguez@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Jan
    22

    EES Seminar: Bahareh Hassanpour

    McCormick - Civil and Environmental Engineering

    2:00 PM

    EVENT DETAILS

    TIME Friday, January 22, 2021 at 2:00 PM - 3:00 PM

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    CONTACT Tierney Acott    tierney.acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Jan
    26

    Dean's Seminar Series: Benjamin F. Jones

    McCormick School of Engineering and Applied Science

    12:00 PM

    EVENT DETAILS

    TIME Tuesday, January 26, 2021 at 12:00 PM - 1:00 PM

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    CONTACT Northwestern Engineering Events    northwestern-engineering-events@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science

  • Jan
    29

    EES Seminar: Tiezheng Tong

    McCormick - Civil and Environmental Engineering

    2:00 PM

    EVENT DETAILS

    TIME Friday, January 29, 2021 at 2:00 PM - 3:00 PM

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    CONTACT Tierney Acott    tierney.acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Feb
    12

    EES Seminar: Xiaobao Li

    McCormick - Civil and Environmental Engineering

    2:00 PM

    EVENT DETAILS

    TIME Friday, February 12, 2021 at 2:00 PM - 3:00 PM

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    CONTACT Tierney Acott    tierney.acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Feb
    12

    Healthcare Innovation During the COVID-19 Pandemic

    Farley Center for Entrepreneurship and Innovation

    2:00 PM

    EVENT DETAILS

    TIME Friday, February 12, 2021 at 2:00 PM - 3:00 PM

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    CONTACT Farley Center for Entrepreneurship and Innovation    farley@northwestern.edu EMAIL

    CALENDAR Farley Center for Entrepreneurship and Innovation

  • Feb
    13

    CEE Winter Career Fiar

    McCormick - Civil and Environmental Engineering

    10:00 AM

    EVENT DETAILS

    TIME Saturday, February 13, 2021 at 10:00 AM - 1:00 PM

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    CONTACT Tierney Acott    tierney.acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Feb
    19

    EES Seminar: Rosa Maria Espinosa Marzal

    McCormick - Civil and Environmental Engineering

    2:00 PM

    EVENT DETAILS

    TIME Friday, February 19, 2021 at 2:00 PM - 3:00 PM

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    CONTACT Tierney Acott    tierney.acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Feb
    25

    Social Equity & Racial Justice Seminar: Mimi Sheller

    McCormick - Civil and Environmental Engineering

    4:00 PM

    EVENT DETAILS

    TIME Thursday, February 25, 2021 at 4:00 PM - 5:00 PM

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    CONTACT Tierney Acott    tierney.acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Mar
    3

    SPREE Seminar: Joe Labuz

    McCormick - Civil and Environmental Engineering

    11:00 AM

    EVENT DETAILS

    TIME Wednesday, March 3, 2021 at 11:00 AM - 12:00 PM

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    CONTACT Tierney Acott    tierney.acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Mar
    5

    EES Seminar: Kevin Wilkinson

    McCormick - Civil and Environmental Engineering

    2:00 PM

    EVENT DETAILS

    TIME Friday, March 5, 2021 at 2:00 PM - 3:00 PM

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    CONTACT Tierney Acott    tierney.acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Mar
    10

    SPREE Seminar: John van de Lindt

    McCormick - Civil and Environmental Engineering

    11:00 AM

    EVENT DETAILS

    TIME Wednesday, March 10, 2021 at 11:00 AM - 12:00 PM

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    CONTACT Tierney Acott    tierney.acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Mar
    12

    EES Seminar: Noah Fierer

    McCormick - Civil and Environmental Engineering

    2:00 PM

    EVENT DETAILS

    TIME Friday, March 12, 2021 at 2:00 PM - 3:00 PM

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    CONTACT Tierney Acott    tierney.acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Mar
    13

    Winter Classes End

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Saturday, March 13, 2021

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

    CALENDAR University Academic Calendar

  • Mar
    15

    Winter Examinations Begin

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Monday, March 15, 2021

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

    CALENDAR University Academic Calendar