Applied Mathematics Colloquium with Francis Giraldo, NPS
Tuesday,
October 27, 2020
2:45 PM - 3:45 PM
Online Event
Room/Area: Zoom Meeting
Room/Area: Zoom Meeting
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"Recent Results with Element-based Galerkin Nonhydrostatic Atmospheric Models"
Frank Giraldo
Department of Applied Mathematics, Naval Postgraduate School
Abstract: In this talk, I will present some recent results that we have obtained with our element-based Galerkin (EBG) nonhydrostatic atmospheric models. The governing equations of motion are the deep-planet compressible Navier-Stokes equations. Two models will be discussed: NUMA and CLIMA. The NUMA model is the computational engine inside of the U.S. Navy’s NEPTUNE next-generation weather forecast system while CLIMA is the dynamical core inside of the ClimateMachine climate modeling system (written entirely in the Julia programming language). The emphasis of this talk is on (1) the element-based Galerkin methods; (2) brief outline of time-integrators; (3) some new results for NUMA high-altitude simulations and CLIMA results for classical GCM and LES simulations; and (4) GPU performance of these models.
About the speaker: Frank Giraldo is a Distinguished Professor of Applied Mathematics and Director of the Center for Computational Mathematics at the Naval Postgraduate School (NPS) and Adjunct Professor of Applied Mathematics at the Baskins School of Engineering at the University of California at Santa Cruz (UCSC). He and his team built the NUMA model using the element-based Galerkin (EBG) methods described in his textbook “Introduction to Element-based Galerkin Methods using Tensor-Product Bases: Analysis, Algorithms, and Applications” (Springer December 2020); NUMA is a compressible Navier-Stokes solver used for atmospheric, ocean, and fluid dynamics simulations. Frank and colleagues at NPS helped develop the ClimateMachine atmospheric model, which is an open source discontinuous Galerkin nonhydrostatic atmospheric model. Frank and colleagues hosted the 2012 Gene Golub SIAM Summer School on Simulation and Supercomputing in the Geosciences where EBG methods was one of the topics of the summer course. In addition, Frank has served on the National Earth Systems Prediction Capability working groups for over 10 years, and has served on the Department of Energy’s INCITE panels for over 5 years (including chairing the committee the past 3 years).
Host: Prof. Kyle Mandli
Send an email to [email protected] for the Zoom link.
"Recent Results with Element-based Galerkin Nonhydrostatic Atmospheric Models"
Frank Giraldo
Department of Applied Mathematics, Naval Postgraduate School
Abstract: In this talk, I will present some recent results that we have obtained with our element-based Galerkin (EBG) nonhydrostatic atmospheric models. The governing equations of motion are the deep-planet compressible Navier-Stokes equations. Two models will be discussed: NUMA and CLIMA. The NUMA model is the computational engine inside of the U.S. Navy’s NEPTUNE next-generation weather forecast system while CLIMA is the dynamical core inside of the ClimateMachine climate modeling system (written entirely in the Julia programming language). The emphasis of this talk is on (1) the element-based Galerkin methods; (2) brief outline of time-integrators; (3) some new results for NUMA high-altitude simulations and CLIMA results for classical GCM and LES simulations; and (4) GPU performance of these models.
About the speaker: Frank Giraldo is a Distinguished Professor of Applied Mathematics and Director of the Center for Computational Mathematics at the Naval Postgraduate School (NPS) and Adjunct Professor of Applied Mathematics at the Baskins School of Engineering at the University of California at Santa Cruz (UCSC). He and his team built the NUMA model using the element-based Galerkin (EBG) methods described in his textbook “Introduction to Element-based Galerkin Methods using Tensor-Product Bases: Analysis, Algorithms, and Applications” (Springer December 2020); NUMA is a compressible Navier-Stokes solver used for atmospheric, ocean, and fluid dynamics simulations. Frank and colleagues at NPS helped develop the ClimateMachine atmospheric model, which is an open source discontinuous Galerkin nonhydrostatic atmospheric model. Frank and colleagues hosted the 2012 Gene Golub SIAM Summer School on Simulation and Supercomputing in the Geosciences where EBG methods was one of the topics of the summer course. In addition, Frank has served on the National Earth Systems Prediction Capability working groups for over 10 years, and has served on the Department of Energy’s INCITE panels for over 5 years (including chairing the committee the past 3 years).
Host: Prof. Kyle Mandli
Send an email to [email protected] for the Zoom link.
If you wish to attend, please send an email to [email protected] and you will be sent the Zoom link a few days before the event.
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