Modeling Heavy-Gas Dispersion in Air with Two-Layer Shallow Water Equations

Autor: Alexandre Chiapolino, Sébastien Courtiaud, Emmanuel Lapébie, Richard Saurel

Publikováno v: Fluids, Vol 6, Iss 1, p 2 (2020)

Computation of gas dispersal in urban places or hilly grounds requires a large amount of computer time when addressed with conventional multidimensional models. Those are usually based on two-phase flow or Navier-Stokes equations. Different classes o

Externí odkaz: https://doaj.org/article/10c7ef1b885c482098e885a9bc7364c5

Extended Noble–Abel Stiffened-Gas Equation of State for Sub-and-Supercritical Liquid-Gas Systems Far from the Critical Point

Autor: Alexandre Chiapolino, Richard Saurel

Publikováno v: Fluids, Vol 3, Iss 3, p 48 (2018)

The Noble–Abel Stiffened-Gas (NASG) equation of state (Le Métayer, O. and Saurel, R. proposed in 2016) is extended to variable attractive and repulsive effects to improve the liquid phase accuracy when large temperature and pressure variation rang

Externí odkaz: https://doaj.org/article/7ef22e8810e2409aba05ea5f791da155

Noble-Abel / First-order virial equations of state for gas mixtures resulting of multiple condensed reactive materials combustion

Autor: Richard Saurel, Loann NERON

Publikováno v: Physics of Fluids
Physics of Fluids, American Institute of Physics, In press
Physics of Fluids, 2021, 34, pp.016107. ⟨10.1063/5.0079187 SMASH⟩

International audience; The Noble-Abel (NA) equation of state (EOS) is widely used in interior ballistics of guns as well as rocket propulsion computations. Its simplicity and accuracy are key points for intensive computations with hyperbolic two-pha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df0cc4593636787b4fe4f3be19b3d629
https://hal.archives-ouvertes.fr/hal-03435195/document

A method to solve Hamilton-Jacobi type equation on unstructured meshes

Autor: Alexandre Chiapolino, François Fraysse, Richard Saurel

Publikováno v: Journal of Scientific Computing
Journal of Scientific Computing, Springer Verlag, In press
Journal of Scientific Computing, 2021, 88, pp.7. ⟨10.1007/s10915-021-01517-9⟩

A new method is developed to approximate a first-order Hamilton–Jacobi equation. The constant motion of an interface in the normal direction is of interest. The interface is captured with the help of a “Level-Set” function approximated through

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a3a7a6a65d8897034045337ad864d25
https://hal.archives-ouvertes.fr/hal-02918881

Solveur de Riemann à reconstruction interne (RSIR) pour les écoulements compressibles monophasiques et diphasiques hors d'équilibre

Autor: Quentin Carmouze, Richard Saurel, Emmanuel Lapebie, Alexandre Chiapolino

Publikováno v: Journal of Computational Physics
Journal of Computational Physics, 2020, 408, pp.109176. ⟨10.1016/j.jcp.2019.109176⟩
Journal of Computational Physics, Elsevier, In press, ⟨10.1016/j.jcp.2019.109176⟩

A new Riemann solver is built to address numerical resolution of complex flow models. The research direction is closely linked to a variant of the Baer and Nunziato [2] model developed in Saurel et al. [31] . This recent model provides a link between

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e37818e0d41d9843ec4fd41e758d9bd
https://hal.science/hal-02138912/file/RSIR-Hal.pdf