#computationalphysics — Public Fediverse posts

A new AI approach, trained on physical equations, allows identifying the moment when a stable flow becomes unstable.

Machine learning could transform simulations in engineering, weather, and extreme events.

🔗 https://phys.org/news/2026-04-ai-method-flags-fluid-simulations.html

#FluidDynamics #MachineLearning #ComputationalPhysics #Bifurcation #leidenfrost

A new AI approach, trained on physical equations, allows identifying the moment when a stable flow becomes unstable.

Machine learning could transform simulations in engineering, weather, and extreme events.

🔗 https://phys.org/news/2026-04-ai-method-flags-fluid-simulations.html

#FluidDynamics #MachineLearning #ComputationalPhysics #Bifurcation #leidenfrost

My implementation of the GaussSeidel smoother using a Diagnol direct access scheme in OpenFOAM as compared to the default GS smoother LDU gives almost ~50% improvements in cache misses and hits for a structured 3D cavity tutorial. Profiled using the amazing LIKWID profiler. Will share a deep technical report soon. Check it out and use - https://github.com/amartyadav/DIAGaussSeidel-Smoother-OpenFOAM
#hpc #scientificcomputing #computationalphysics #cfd #openfoam #likwid #softwaredevelopment #cpp

Computational Physics (2nd Edition)

https://websites.umich.edu/~mejn/cp2/

#HackerNews #ComputationalPhysics #ComputationalPhysics2ndEdition #PhysicsResources #UMich #Publications #STEMEducation

Postdoctoral Fellowship in Thermal Transport or Phase Change Materials
Shandong University

See the full job description on jobRxiv: https://jobrxiv.org/job/shandong-university-27778-postdoctoral-fellowship-in-thermal-transport-or-phase-change-materials/

#computationalphysics #materialsscience #phasetransitions #thermaltransport #ScienceJobs #hiring #researc...
https://jobrxiv.org/job/shandong-university-27778-postdoctoral-fellowship-in-thermal-transport-or-phase-change-materials/?fsp_sid=9921

「本資料は原子核三者若手夏の学校 2025の原子核パート「Julia言語による原子核構造計算入門」での使用を目的として開発した資料です。」

https://sotayoshida.github.io/Lecture_SummerSchool2025/home.html

https://github.com/sotayoshida/pairinghamiltonians.jl

#Julia #Physics #NuclearPhysics #ComputationalPhysics #Hamiltonian

Marking Over

Better is the end of a thing than the beginning thereof…

I’ve just graded the last of my assignments for this (academic year). I had a bigger class than usual for Computational Physics this time round, so it took much longer than usual to mark the project component. It always takes a while because I not only have to read and grade the reports, but also look at the code they submit and run it to check that it works. I uploaded the final grades to our system just now and although I finished later than planned I was relieved to see that I’m not the last lecturer to do so!

What happens next is that all the marks from all the modules will be collated and cross-checked. Then we will have a meeting of the Departmental Examination Board (on Thursday morning) to go through the results in the presence of our External Examiner. Since this is the end of the academic year, we will also look at the final grades of those students who are completing their studies this year in order to consider the classification of their degrees. There may also be some who are not qualified to graduate and may have to repeat failed examinations or other assessments. Another (pleasant) duty of our Examination Board on Thursday will be to award prizes for the best performance, not just for finalists but for students at every stage, including the first year.

I was teaching a module for the Department of Engineering last Semester so I should attend their final Examination Board too. Many of our students at Maynooth take joint degrees, in which case their final degree classification depends on grades from two Departments. For that reason, there is an overall Examination Board at which the marks are combined. Fortunately, only the Head of Department (who is not me) has to attend that one.

If all goes to plan, students will receive their final marks on Friday 27th June. It’s a lengthy process so as to allow plenty of opportunities to check and validate the different stages. After that, on Tuesday 1st July, we have a consultation day at which students can ask for advice about repeat examinations, etc, and after that we have to make sure repeat examinations are available. The repeat examination period is Wednesday 6th August to Tuesday 19th August.

Between the end of this week and the repeat exams, perhaps I’ll get a bit of time to do some research…

#ComputationalPhysics #Examinations

Marking Over

Better is the end of a thing than the beginning thereof…

I’ve just graded the last of my assignments for this (academic year). I had a bigger class than usual for Computational Physics this time round, so it took much longer than usual to mark the project component. It always takes a while because I not only have to read and grade the reports, but also look at the code they submit and run it to check that it works. I uploaded the final grades to our system just now and although I finished later than planned I was relieved to see that I’m not the last lecturer to do so!

What happens next is that all the marks from all the modules will be collated and cross-checked. Then we will have a meeting of the Departmental Examination Board (on Thursday morning) to go through the results in the presence of our External Examiner. Since this is the end of the academic year, we will also look at the final grades of those students who are completing their studies this year in order to consider the classification of their degrees. There may also be some who are not qualified to graduate and may have to repeat failed examinations or other assessments. Another (pleasant) duty of our Examination Board on Thursday will be to award prizes for the best performance, not just for finalists but for students at every stage, including the first year.

I was teaching a module for the Department of Engineering last Semester so I should attend their final Examination Board too. Many of our students at Maynooth take joint degrees, in which case their final degree classification depends on grades from two Departments. For that reason, there is an overall Examination Board at which the marks are combined. Fortunately, only the Head of Department (who is not me) has to attend that one.

If all goes to plan, students will receive their final marks on Friday 27th June. It’s a lengthy process so as to allow plenty of opportunities to check and validate the different stages. After that, on Tuesday 1st July, we have a consultation day at which students can ask for advice about repeat examinations, etc, and after that we have to make sure repeat examinations are available. The repeat examination period is Wednesday 6th August to Tuesday 19th August.

Between the end of this week and the repeat exams, perhaps I’ll get a bit of time to do some research…

#ComputationalPhysics #Examinations

Grid-Free Approach to Partial Differential Equations on Volumetric Domains [pdf]

http://rohansawhney.io/RohanSawhneyPhDThesis.pdf

#HackerNews #GridFree #PDEs #VolumetricDomains #MathematicalModeling #ComputationalPhysics

Independent verification of results is an important part of the #scientific process. However - in #physics at least - #replication and #verification studies rarely seem to be published. Despite this, I decided to attempt to verify the results of a groundbreaking Nature Physics paper from 2012, in which the authors describe the first dynamical #quantum #simulator. You can read the fruits of my labour in my #arxiv preprint: "Classical verification of a quantum simulator: local relaxation of a 1D Bose gas". I hope you find it interesting.

https://scirate.com/arxiv/2401.05301

#ScientificProcess #QuantumSimulator #QuantumSimulation #QuantumAdvantage #science #ClassicalVerification #ComputationalPhysics #ParallelComputing #HPC #HighPerfomanceComputing #supercomputer #TensorNetworks #MatrixProductStates #TEBD

🎉 Congratulations to Martin Trappe & Ryan Chisholm for their paper in Nature Communications!

They used density functional theory from physics to make spatial ecosystem models. This general computational framework makes predictions that are as good as specialised models on systems from predatory microbes to territorial flies to trees

https://rdcu.be/c6vQP

#physics #ecology #ecosystem #modelling #modeling #functionals #DFTe #densityfunctionaltheory #computationalphysics #quantummechanics