#openfoam — Public Fediverse posts

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

Released my DIA-format Gauss-Seidel smoother plugin for OpenFOAM v13. MIT licensed.

Replaces the default LDU smoother on structured hex meshes — DIA stores diagonal bands contiguously, reducing pointer indirection and DRAM pressure. Expecting 10–20% wall-clock gains and better cache utilisation based on standalone profiling. Full OpenFOAM benchmarks incoming.

https://github.com/amartyadav/DIAGaussSeidel-Smoother-OpenFOAM

#OpenFOAM #HPC #CFD #NumericalMethods #FOSS #computerscience #physics

My work for the month is to optimise the matrix adressing scheme of OpenFOAM to reduce cache miss. Initial idea is to replace the LDU Matrix addressing scheme with Diagnol matrix addressing scheme using multiple arrays for structures meshes. Will check it out on a simple 2D Poisson equation using Gauss-Seidel solver to check performance benefits, and will eventually proceed to introduce a new solver as a plugin if benefits are noticeable.
Wish me luck.

#openfoam #scientificcomputing #hpc #cfd

The submission deadline for abstracts and training courses has been extended to March 15 to fill the last places in the programme.

#OFW21 #OpenFOAM #CFD #FinalCallth

Hello Fediverse 👋

We are FOSSEE, IIT Bombay 🇮🇳
Empowering education through Free/Libre and Open Source Software (FLOSS).

We promote open source in teaching & research, support FOSS development, build campus FOSSEE Clubs, and connect academia with industry.

Let’s collaborate 🤝

🌐 https://fossee.in
📩 [email protected]

#FOSSEE #OpenSource #FLOSS #IITBombay #OpenEducation #Fediverse
#Scilab #Python #Openfoam #OpenModelica #DWSIM #esim #OSDAG #Arduino #FreeCAD #JMOL #Blender #Inkscape #synfig

Might publish a blog or two in a few weeks about my work with OpenFOAM, different profilers, and an implementation of an LBM CFD kernel on RISC-V with POSITS.

What a great company to be working for. Learning so much!

#posit #RISCV #cfd #openfoam #lbm #cfd #scientificcomputing #profiler #Linux #blog #technicalblog #ieee754 #calligotech

Cập nhật mô phỏng đối lưu tự nhiên và bức xạ tích hợp cho đèn LED COB 200W dùng OpenFOAM. Kết quả: nhiệt độ tản nhiệt cao nhất ~78°C, gặp khó khăn trong tính toán viewFactor (chậm), mô hình P1 chênh lệch ~6-8°C. Tìm lời khuyên về tiếp cận TIM chính xác và điều kiện biên ổn định hơn. Dùng #OpenFOAM #ThermalDesign #LED #MôPhỏngThermal #Engineering #Science #Technology #Simulations #TảnNhiệt #KỹThuật

https://dev.to/emma-suntech/simulation-of-natural-convection-radiative-coupling-heat-dissipation-f

Following on from my earlier stuff about being inspired about parachute/recovery systems and Ballute design in @FreeCAD I've dived into setting up the CfDoF workbench and bashing through a simple tutorial pushing water through a stepped tube. I think I borked the glyph a little, but I feel like I've learnt a little... and seen a LOT to learn. #OpenFOAM #CFD #Paraview

On the topic of #CFD solvers, #OpenFOAM is popular choice. We are actively working on creating a new reusable #Python + #FluidSim framework, so that you can define, launch, manage and post-process :blobhaj_plead_1: OpenFOAM simulations from Python :python_logo:

Interesting? Take a look

https://foss.heptapod.net/fluiddyn/fluidsimfoam

#fluidsimfoam

Last week, I was at the #Coupled2023 conference in Chania, Crete, Greece. It’s amazing to see what people can do when it comes to #CFD #particle coupling or fluid structure interactions (#FSI). Also quite interesting the sessions on #preCICE , #openfoam and #opensouce

Shout out to Konstantinos and @roenby who gave a fascinating talks on emulsions and FSI. Thanks to Konstantinos and @roenby I have pictures from my talk

Exploring the Venturi effect.

A simulation was performed to create this model which depicts streamlines within a tube. The lines are coloured to show that the pressure at the throat section is lower (blue) than the pressure at the inlet or outlet sections (red).

#stem #cfd #flowvis #animation #3d #sketchfab #atpl #openfoam #paraview

https://sketchfab.com/3d-models/exploring-the-venturi-effect-ec57ac1bfceb46399d7627616ef5aee2

Exploring the Venturi effect.

A simulation was performed to create this model which depicts streamlines within a tube. The lines are coloured to show that the pressure at the throat section is lower (blue) than the pressure at the inlet or outlet sections (red).

#stem #cfd #flowvis #animation #3d #sketchfab #atpl #openfoam #paraview

https://sketchfab.com/3d-models/exploring-the-venturi-effect-ec57ac1bfceb46399d7627616ef5aee2

Exploring the Venturi effect.

A simulation was performed to create this model which depicts streamlines within a tube. The lines are coloured to show that the pressure at the throat section is lower (blue) than the pressure at the inlet or outlet sections (red).

#stem #cfd #flowvis #animation #3d #sketchfab #atpl #openfoam #paraview

https://sketchfab.com/3d-models/exploring-the-venturi-effect-ec57ac1bfceb46399d7627616ef5aee2

Are you an #OpenFOAM developer? Do you offer products and services based on #OpenFOAM? Are you planning to attend the next workshop #OFW18?

If you are interested in #sponsoring the event or #exhibiting your products, visit following link
https://openfoamworkshop.org/sponsors/

#CFD

#Adventskalender day 14: A step-by-step tutorial on starting with #preCICE, coupling #OpenFOAM with a #cpp example code to simulate an (almost) #fsi case of a flow around a free-rotating body: http://precice.org/quickstart.html

Mastodon #introduction: TuxRiders is a journey to research experiences using free and #opensource scientific computing programs, which aimed to demonstrate their power for real-world scientific research.

In our #YouTube channel, we regularly talk about #FiniteElement, #EngineeringMath, #PDEs, #NumericalMethods, #FreeFEM, #FEniCS, #ParaView, #C++, #Python, #OpenFOAM, and #Linux.

Check out our YT channel: https://www.youtube.com/TuxRiders

My 🐘 #introduction 👋

I'm a researcher at Roskilde University (#RUC) in 🇩🇰. My background is #physics and research I do revolves around #fluiddynamics 🌊 💦 using #CFD and #theory. Much of my work is focused on #thinfilms or #droplets. My perferred #CFD tool is #LBM but I started using #VOF with #openfoam. I try to be open when it comes to coding which is why I switch languages for different tasks #julialang, #python, #C++, #JS.
Besides that I'm into #running 🏃‍♂️, #gaming, #coffee ☕ and #politics.