In this paper we describe a fast algorithm for generating periodic RVEs of polycrystalline
materials. In particular, we use the damped Newton method from semi-discrete optimal …

The semigeostrophic equations are a frontogenesis model in atmospheric science.
Existence of solutions both from the theoretical and numerical point of view is given under a …

Accurate extended-range weather predictions are now routinely available for up to a week
ahead, and represent a major scientific achievement of the meteorological community over …

We prove existence and uniqueness of solutions for an entropic version of the semi-
geostrophic equations. We also establish convergence to a weak solution of the semi …

Chynoweth and Sewell proposed a mathematical model for an atmospheric front based on
the singularities of the Legendre transformation between different pairs of dual variables …

This thesis discusses two distinct topics: the hyperbolic isoperimetric problem and the well
posedness of the semigeostrophic system in the spherical setting. The first part adresses the …