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        "date_end":"2024-04-05",
        "time_start":"14:30:00",
        "time_end":"15:15:00",
        "time_zone":"America\/Detroit",
        "event_title":"Sky Tonight",
        "occurrence_title":"",
        "combined_title":"Sky Tonight",
        "event_subtitle":"",
        "event_type":"Presentation",
        "event_type_id":"16",
        "description":"A live presentation on what to find in the sky tonight and for the coming few weeks. This presentation includes how to find the cardinal directions on your own with the North Star, current and upcoming constellations, visible planets, a few deep sky objects depending on the season, and other interesting astronomical visualizations. If you want to be able to look up from your own backyard and know what to look for, this is the show for you. \r\n\r\nThe state-of-the-art Planetarium & Dome Theater at the U-M Museum of Natural History transports visitors beyond distant stars and back in time from the comfort of reclining seats. Tickets are $8 for adults, seniors, and children ages 3 & up. Babies without tickets may be required to sit on an adult's lap. Tickets are available the day of the show in the Museum Store. Schedule subject to change.",
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        "building_name":"Museum of Natural History",
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        "location_name":"Museum of Natural History",
        "has_livestream":0,
        "cost":"Tickets are $8 for adults, seniors, and children ages 3 & up.",
        "tags":["Astronomy","Museum","natural history museum","Natural Sciences","Space"],
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                "group_name":"Planetarium & Dome Theater at the Museum of Natural History",
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        "datetime_modified":"20240320T104159",
        "datetime_start":"20240405T150000",
        "datetime_end":"20240405T160000",
        "has_end_time":1,
        "date_start":"2024-04-05",
        "date_end":"2024-04-05",
        "time_start":"15:00:00",
        "time_end":"16:00:00",
        "time_zone":"America\/Detroit",
        "event_title":"AIM Seminar:  Filtered volume fraction fluctuations in dilute, non-collisional, particle-laden flow",
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        "combined_title":"AIM Seminar:  Filtered volume fraction fluctuations in dilute, non-collisional, particle-laden flow: John Wakefield, Mechanical Engineering, University of Michigan",
        "event_subtitle":"John Wakefield, Mechanical Engineering, University of Michigan",
        "event_type":"Lecture \/ Discussion",
        "event_type_id":"13",
        "description":"Abstract:  Turbulent particle-laden flows give rise to spatial heterogeneity (e.g. clustering) characterized by two-point statistics.  Most coarse-grained (i.e. two fluid) models only solve for one-point moments, limiting reproduction of important two-phase flow statistics.  In this talk, we present set of equations describing the evolution of these flows that include fluctuating components of filtered fields --- a description of the level of clustering present in these flows.  For dilute heavy particles settling in homogeneous isotropic turbulence, the averaged filtered drag and filtered Reynolds-stress like term that dictates enhanced settling is correlated to this description of volume fraction fluctuation.  A data-driven approach that efficiently traverses parameter space in direct numerical simulations to inform closures is proposed, providing both descriptive insights and directions for future modeling.  Further, a numerical crossflow experiment is proposed, yielding several advantages over traditional forced homogeneous isotropic turbulence for the study of turbulent particle-laden flows.  The filtered volume fraction is shown to be valuable in that it may enable better fits for unclosed quantities related to particle drag and particle-phase momentum flux in coarse-grained simulations.\r\n\r\n\r\nContact:  Silas Alben",
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        "room":"1084",
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        "tags":["Mathematics"],
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                "group_name":"Applied Interdisciplinary Mathematics (AIM) Seminar - Department of Mathematics",
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        "datetime_modified":"20240401T081409",
        "datetime_start":"20240405T150000",
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        "has_end_time":1,
        "date_start":"2024-04-05",
        "date_end":"2024-04-05",
        "time_start":"15:00:00",
        "time_end":"16:00:00",
        "time_zone":"America\/Detroit",
        "event_title":"Belyi's theorem",
        "occurrence_title":"",
        "combined_title":"Belyi's theorem: Ritwick Bhargava",
        "event_subtitle":"Ritwick Bhargava",
        "event_type":"Workshop \/ Seminar",
        "event_type_id":"21",
        "description":"Belyi\u2019s theorem states that a smooth projective complex algebraic curve (i.e. a compact Riemann surface) can be defined over a number field if and only if it can be expressed as a branched covering of the projective line ramified over at most 3 points, providing a purely topological characterization of an arithmetic condition. I will present a proof of this result and sketch how it leads to Grothendieck\u2019s theory of dessin d'enfants.",
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                "guid":"120991-21845640@events.umich.edu",
        "permalink":"http:\/\/events.umich.edu\/event\/120991",
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        "building_name":"East Hall",
        "campus_maps_id":"53",
        "room":"4088",
        "location_name":"East Hall",
        "has_livestream":0,
        "cost":"",
        "tags":["Mathematics"],
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        "sponsors":[
             {
                "group_name":"Student Algebraic Geometry Seminar - Department of Mathematics",
                "group_id":"4904",
                "website":""                },             {
                "group_name":"Department of Mathematics",
                "group_id":"3791",
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