Zobrazeno 1 - 10
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pro vyhledávání: '"Boyaval Sébastien"'
Autor:
Boyaval Sébastien
Publikováno v:
ESAIM: Proceedings and Surveys, Vol 76, Pp 2-19 (2024)
We generalize a new symmetric-hyperbolic system of PDEs proposed in [ESAIM:M2AN 55 (2021) 807-831] for Maxwell fluids to a class of systems that define unequivocally multi-dimensional visco-elastic flows. Precisely, within a general setting for conti
Externí odkaz:
https://doaj.org/article/a9c1daa5989f4e5287f65e084de9bd98
This work discusses how to choose performance measures to compare numerical simulations of a flood event with one satellite image, e.g., in a model calibration or validation procedure. A series of criterion are proposed to evaluate the sensitivity of
Externí odkaz:
http://arxiv.org/abs/2408.00571
We consider one dimensional isentropic compressible Navier-Stokes equations with Oldroyd-type constitutive law. By establishing uniform a priori estimates (with respect to re-laxation time), we show global existence of smooth solutions with small ini
Externí odkaz:
http://arxiv.org/abs/2406.14943
Numerical simulations are a highly valuable tool to evaluate the impact of the uncertainties of various modelparameters, and to optimize e.g. injection-production scenarios in the context of underground storage (of CO2typically). Finite volume approx
Externí odkaz:
http://arxiv.org/abs/2406.07950
Publikováno v:
ESAIM: Proceedings and Surveys, Vol 48, Pp 321-340 (2015)
At the scale of a river reach, the dynamics of the river bed is typically modelled by Exner equation (conservation of the solid mass) with an empirical solid flux of transported sediments, which is a simple deterministic algebraic formula function
Externí odkaz:
https://doaj.org/article/5a57d1558ce2482695e0065b63fcd745
Publikováno v:
ESAIM: Proceedings and Surveys, Vol 48, Pp 308-320 (2015)
We perform numerical simulations in the one-dimensional torus for the first order Burgers equation forced by a stochastic source term with zero spatial integral. We suppose that this source term is a white noise in time, and consider various regula
Externí odkaz:
https://doaj.org/article/d7e32877750649ad9d4d736f16057406
Autor:
Boyaval Sébastien
Publikováno v:
ESAIM: Proceedings and Surveys, Vol 45, Pp 108-117 (2014)
A thin-layer model for shallow viscoelastic free-surface gravity flows on slippery topographies around a flat plane has been derived recently in [Bouchut-Boyaval, M3AS (23) 2013]. We show here how the model can be modified for flows on rugous topo
Externí odkaz:
https://doaj.org/article/eea55465505240b482fb19700408af03
Autor:
Boyaval, Sébastien
Maxwell's models for viscoelastic flows are famous for their potential to unify elastic motions of solids with viscous motions of liquids in the continuum mechanics perspective. But rigorous proofs are lacking. The present note is a contribution towa
Externí odkaz:
http://arxiv.org/abs/2212.10302
Autor:
Boyaval, Sébastien
Maxwell models for viscoelastic flows are famous for their potential to unify elastic motions of solids with viscous motions of liquids in the continuum mechanics perspective. But the usual Maxwell models allow one to define well motions mostly for o
Externí odkaz:
http://arxiv.org/abs/2212.02359
Autor:
Boyaval, Sébastien, Dostalík, Mark
We propose a system of conservation laws with relaxation source terms (i.e. balance laws) for non-isothermal viscoelastic flows of Maxwell fluids. The system is an extension of the polyconvex elastodynamics of hyperelastic bodies using additional str
Externí odkaz:
http://arxiv.org/abs/2104.12399