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SUMMARY:Simulations of a heated fluid at low Mach number: modelling of pha
se transition and numerical strategies
DTSTART;VALUE=DATE-TIME:20161213T143000Z
DTEND;VALUE=DATE-TIME:20161213T150000Z
DTSTAMP;VALUE=DATE-TIME:20211016T185115Z
UID:indico-contribution-584@indico.math.cnrs.fr
DESCRIPTION:Speakers: Bérénice Grec ()\nThermohydraulic codes used in in
dustry are based on the resolution of compressible Navier-Stokes equations
in which acoustic waves are taken into account. This allows to describe f
luid flows at any Mach number. However\, many difficulties may arise in te
rms of CPU time\, robustness and accuracy in the low Mach number regime.\n
In this regime\, an asymptotic expansion with respect to the Mach number l
eads to simpler models.\nThus\, the strategy of our work is to derive\, in
vestigate and simulate a system of PDE taking into account phase transitio
n in the low Mach number regime but with possible high heat transfers.\nMo
re precisely\, we focus on the choice of the equation of state and its par
ameters\, with emphasis on the gain due to the low Mach number hypothesis\
, \nand we present preliminary 2D numerical simulations with FreeFem++ sho
wing the robustness of the approach.\nThis is a joint work with S. Dellach
erie\, G. Faccanoni and Y. Penel.\n\nhttps://indico.math.cnrs.fr/event/157
7/contributions/584/
LOCATION:Institut Henri Poincaré Amphi Hermite
URL:https://indico.math.cnrs.fr/event/1577/contributions/584/
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