Giuseppe Bilotta · @giuseppebilotta
117 followers · 76 posts · Server fediscience.org

Although the focus of the paper is on , and the simulation of viscous fluids, the key finding is of more general interest: the numerical stability of can be improved by rewriting the standard formulation en.wikipedia.org/wiki/Biconjug to avoid catastrophic cancellations in the computation of some important coefficients. Anyone interested in solving large linear systems would benefit from adopting the proposed alternative form of the method.

#BiCGSTAB #smoothedparticlehydrodynamics

Last updated 2 years ago

Giuseppe Bilotta · @giuseppebilotta
117 followers · 76 posts · Server fediscience.org

I'm still preparing my post series on , but in the mean time you can read some about in our most recent published paper:
“A numerically robust, parallel-friendly variant of for the semi-implicit integration of the viscous term in ”, freely accessible for the next 50 days from this link:
authors.elsevier.com/a/1fN8C50

#smoothedparticlehydrodynamics #BiCGSTAB #gpgpu

Last updated 2 years ago

Matthias · @ulfi
40 followers · 140 posts · Server nerdculture.de

How does it look like when smoothed particles in a hydrodynamic simulation are doing nothing? Like this.. There is a small amount of initial energy and as you can see, no energy is lost 😆

#smoothedparticlehydrodynamics #numericalmethods

Last updated 3 years ago

Giuseppe Bilotta · @giuseppebilotta
117 followers · 76 posts · Server fediscience.org

For a more hands-on learning experience, the upcoming 16th International Workshop <spheric2022.it> offers a fully dedicated to learning the basics of , from the theory to practical examples with a implementation.

#opensource #FreeSoftware #smoothedparticlehydrodynamics #TrainingDay #spheric

Last updated 3 years ago

Giuseppe Bilotta · @giuseppebilotta
117 followers · 76 posts · Server fediscience.org

There's a lot to learn, and a lot to research, on . The Global Seminars <spheric-sph.org/global-seminar> cover many interesting aspects of the method and its applications, and are an excellent way to whet your appetite and pique your interest.

#spheric #smoothedparticlehydrodynamics

Last updated 3 years ago

Giuseppe Bilotta · @giuseppebilotta
117 followers · 76 posts · Server fediscience.org

The community of researchers and industrial users of is represented by , an with the objective of fostering the development of the method and its adoption <spheric-sph.org>.
defined 5 for :
GC1: , and
GC2:
GC3:
GC4: Coupling to other models
GC5: Applicability to

#industry #adaptivity #BoundaryConditions #stability #consistency #convergence #sph #GrandChallenges #sig #ERCOFTAC #spheric #smoothedparticlehydrodynamics

Last updated 3 years ago

Giuseppe Bilotta · @giuseppebilotta
117 followers · 76 posts · Server fediscience.org

was originally developed for (modelling star formation), but has expanded to , , , , , , just to name a few.
It has caught the attention of several industries, with applications ranging from the design of engines, tires and windshield wipers to the development of wave energy converters, ship-locks, fish-passes and dam spillways.

youtube.com/watch?v=xqHKa4xJWK

#medicine #geology #aeronautics #waterworks #OceanEngineering #NavalArchitecture #astrophysics #smoothedparticlehydrodynamics

Last updated 3 years ago

Giuseppe Bilotta · @giuseppebilotta
117 followers · 76 posts · Server fediscience.org

Let's talk about ( for short, even though you'll see used on other sites, because also has a very common, very not-safe-for-work meaning …).

Why should we talk about it? Because it's relatively less known than other numerical methods, possibly undeservingly so, and because I love it.

So what is it? SPH is a Lagrangian meshless numerical method primarily used for (and more recently also ).

#ComputationalMechanics #ComputationalFluidDynamics #sph_ #sph #smoothedparticlehydrodynamics

Last updated 3 years ago

Giuseppe Bilotta · @giuseppebilotta
117 followers · 76 posts · Server fediscience.org

I work at the Osservatorio Etneo, Catania section of the Italian National Institute for Geophysics and Volcanology .
Mathematician by formation, scientific software developer by necessity, I work on flow , assessment, mitigation.
Much of my work revolves around (), w/ a preference for ().
I should probably mention my interest in and , but I ran out of characters …

#gpgpu #hpc #sph #smoothedparticlehydrodynamics #cfd #ComputationalFluidDynamics #risk #hazard #simulation #Lava #INGV #introduction

Last updated 3 years ago