Conferences, Lectures, & Seminars
Events for September
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Mork Family Department of Chemical Engineering and Materials Science Seminar - Lyman L. Handy Colloquia
Tue, Sep 17, 2019 @ 04:00 AM - 05:20 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
Speaker: Prof. Peter Voorhees, Materials Science and Engineering, Engineering Sciences and Applied Mathematics, Northwestern University
Talk Title: The Morphology and Topology of Nanoporous Metals
Abstract: Nanoporous metals have a broad range of applications such as catalyst supports, artificial muscles, and battery electrodes. The size-scale of these bicontinuous mixtures of metal and void can be controlled by isothermal coarsening. However, the effects of coarsening on the morphology and topology (connectivity) of the metal interfaces are poorly understood, and thus it is difficult to link the processing of nanoporous metals to their properties. In an effort to understand the factors setting the morphology of the interfaces in nanoporous metals, we employ experimental measurements of the three-dimensional morphology of nanoporous gold. These results are then compared with large-scale phase field simulations of the coarsening of bicontinuous two-phase mixtures. The simulations show that during coarsening bicontinuous two-phase mixtures attain a universal self-similar morphology and topology that can thus be compared directly to nanoporous gold. We find dramatic changes in the morphology and topology of bicontinuous structures for volume fractions of solid just above the critical value at which bicontinuity is lost. A comparison between the simulations and experiments shows the critical role of the volume fraction of metal in setting the morphology and topology of the nanoporous metals.
Biography: Peter Voorhees is the Frank C. Engelhart Professor of Materials Science and Engineering at Northwestern University, and Professor of Engineering Sciences and Applied Mathematics. He is co-director of the Northwestern-Argonne Institute of Science and Engineering and is director of the Center for Hierarchical Materials Design. He received his Ph.D. in Materials Engineering from Rensselaer Polytechnic Institute and was a member of the Metallurgy Division at the National Institute for Standards and Technology until joining the Department of Materials Science and Engineering at Northwestern University. He has received numerous awards including the National Science Foundation Presidential Young Investigator Award, ASM International Materials Science Division Research Award (Silver Medal), the TMS Bruce Chalmers Award, the ASM J. Willard Gibbs Phase Equilibria Award, and the McCormick School of Engineering and Applied Science Award for Teaching Excellence. Professor Voorhees is a fellow of ASM International, the Minerals, Metals and Materials Society, and the American Physical Society. He is a member of the American Academy of Arts and Sciences. He has published over 280 papers in the area of the thermodynamics and kinetics of phase transformations.
Host: Dr. Kassner
Location: John Stauffer Science Lecture Hall (SLH) - 102
Audiences: Everyone Is Invited
Contact: Karen Woo/Mork Family
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Mork Family Department of Chemical Engineering and Materials Science Seminar - Distinguished Lecture Series
Tue, Sep 24, 2019 @ 04:00 AM - 05:20 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
Speaker: Joachim Moortgat, The Ohio State University
Talk Title: Numerical Modeling of Complex Transport Processes in CO2-EOR and Carbon Sequestration
Abstract: Carbon dioxide (CO2) injection into geological formations is used both as a means of mitigating global warming by storing anthropogenic CO2 in saline aquifers, and for purely economic reasons in enhanced oil recovery (EOR). CO2 is a peculiar fluid: At typical reservoir conditions, it often behaves as a supercritical liquid and can be denser that the oil-in-place. And, unlike other gasses, when CO2 dissolves in brine and many types of oil, it increases the local density, which can lead to gravitational instabilities. In this lecture, I will discuss these, and other interesting physical processes related to CO2 injection, as well as the computational challenges in modeling flow and transport in heterogeneous and fractured reservoirs.
Biography: Joachim Moortgat is an Associate Professor in the School of Earth Sciences, Ohio State University. His research interests lie in the theory and advanced numerical modeling of compositional multiphase flow in subsurface fractured porous media, with a focus on problems that exhibit complex phase behavior (such as asphaltene precipitation, near-critical gas-oil mixtures, gas condensates, etc.). Moortgat holds MS degrees in theoretical physics and astrophysics, both from Utrecht University, and a PhD in astrophysics from the Radboud University, The Netherlands. Moortgat was the recipient of the 2014 SPE Cedric K. Ferguson Meal awarded by the Society of Petroleum Engineers.
Host: Dr. Jha
Location: John Stauffer Science Lecture Hall (SLH) - 102
Audiences: Everyone Is Invited
Contact: Karen Woo/Mork Family