BEGIN:VCALENDAR
VERSION:2.0
METHOD:PUBLISH
CALSCALE:GREGORIAN
PRODID:-//WordPress - MECv6.5.6//EN
X-ORIGINAL-URL:https://cmc.deusto.eus/
X-WR-CALNAME:cmc.deusto.eus
X-WR-CALDESC:DeustoCCM - Chair of Computational Mathematics at University of Deusto
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-PUBLISHED-TTL:PT1H
X-MS-OLK-FORCEINSPECTOROPEN:TRUE
BEGIN:VEVENT
CLASS:PUBLIC
UID:MEC-4991a0a8bc16b501dc8a85ff2e917190@cmc.deusto.eus
DTSTART:20231123T020000Z
DTEND:20231123T033000Z
DTSTAMP:20251031T222900Z
CREATED:20251031
LAST-MODIFIED:20251031
PRIORITY:5
TRANSP:OPAQUE
SUMMARY:Hyperbolic approximations in fluid mechanics: Hypocoercivity and hybrid Besov spaces
DESCRIPTION:Next Thursday November 23, 2023 our postdoctoral researcher Dr. Timothée Crin-Barat will talk on “Hyperbolic approximations in fluid mechanics: Hypocoercivity and hybrid Besov spaces” at the Nanjing University of Aeronautics and Astronautics.\nAbstract. We investigate the relaxation limits associated with partially dissipative systems in the context of fluid mechanics. As we shall see, partially dissipative systems can be interpreted as hyperbolic approximations of parabolic systems and provide an element of response to the infinite speed of propagation paradox arising in viscous fluid mechan- ics. To demonstrate this, we study a hyperbolic approximation of the multi-dimensional compressible Navier-Stokes-Fourier system and establish its hyperbolic-parabolic strong relaxation limit. For this purpose, we use techniques from the hypocoercivity theory and a precise frequency decomposition of the solutions via the Littlewood-Paley theory. This is a joint work with S. Kawashima, J. Xu and E. Zuazua.\nThen, we study the strong relaxation of the damped 2D-Boussinesq system to- ward the incompressible porous media equation. To that matter, we use an anisotropic Littlewood-Paley framework and develop new anisotropic product laws to lower the reg- ularity requirements on the initial data. This is a result (ARMA ’24) obtained in collab- oration with R. Bianchini and M. Paicu.\nTo conclude, we discuss possible extensions to these results and open problems.\nWHEN\nThu. November 23, 2023 at 10:00H (local time)\nWHERE\nNanjing University of Aeronautics and Astronautics\n29 Yudao St., Nanjing, Jiangsu Province\nChina\n\n
URL:https://cmc.deusto.eus/events-calendar/hyperbolic-approximations-in-fluid-mechanics-hypocoercivity-and-hybrid-besov-spaces/
CATEGORIES:Seminar/Talk,Workshop
ATTACH;FMTTYPE=image/png:https://cmc.deusto.eus/wp-content/uploads/nanjingUni_tCrinBarat_23nov2023.png
END:VEVENT
END:VCALENDAR