Stefano Ottolenghi

Stefano Ottolenghi

I write code and technical documentation. And rants.

Technical Writer @ Neo4j
Software Engineer @ Post Pay Counter

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Deform an unstructured mesh (or how a good angle dramatically simplifies a problem)

Posted on Sat 23 April 2022 in programming, finite element method, mathematics

In the attempt of coupling my PhD's Finite Elements Framework for Fjord Ice-ocean Interactions (FEFFII) with an ice code, I stumbled upon the issue of deforming the ocean mesh. If a simulation stretches over a long span of time, the geometry of the ice is likely to change due to …

FEniCS differences between Function, TrialFunction and TestFunction

Posted on Thu 06 February 2020 in finite element method, IT, programming, mathematics

The FEniCS project allows for simple solution of partial differential equations. However, getting started from examples is so quick, it is easy to miss how the inner-workings of it behave. This should not happen (especially if it is a PhD project). There are three vital pieces of the puzzle that …

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