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Jan 15 •
T-Flows Crash Course is now FREE
With every new year comes a new giveaway! I recently started tidying up my content on YT and decided along the way to share my course on using T-Flows for free. The course is now live on YouTube so feel free to go check it out ;) [link below] N.B. The course is scheduled, and all the content will be available by the end of this weekend. Course link: https://www.youtube.com/@cfd_dose
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Apr '24 •
Introduce yourself to the group 👇
Hi everybody! Happy to have you all here and very excited to kick-start a long journey of mentorship and growth with all of you. To help get to know each other and break the shyness, take a moment to introduce yourself below and let others know what you're currently working on (CFD or in general). ** Please make sure you have carefully read this post and participated in this poll [takes 5 seconds] Let's go!
Pinned
Apr '24 •
Welcome Aboard CFD Dose - The 1st CFD community on Skool!
Here's the scoop: Working on CFD projects is like being in a rock band but playing gigs in different cities without ever meeting your fans. Sure, LinkedIn's been our stage for a while, and it's cool and all, but Skool? It's the VIP backstage pass we've all been waiting for. It's where we can jam on our projects, share the latest beats, and actually hear what you all think. It's our own CFD festival, and you're already on the guest list. CFD Dose, is all about turning CFD into a blast and a profitable gig for everyone, whether you're just starting out or you've been in the game for ages. I'll be breaking down the complex stuff into fun bits, making sure you can actually enjoy learning and, hey, maybe even start making a profitable business from it. Think of us as your fun-loving CFD guide NOT a lame teacher :) *Heads-up! We may go premium down the line to keep the good times rolling and the perks flowing. _____________________________________________________ 🎥 Subscribe to the following channels to stay up to date: - CFD Dose - CFD4Industry -------------------------------------------------------------------------------------- What to Expect in CFD Dose?! ✅ An enthusiastic and engaging community from all over the planet. 🌍 ✅ Access to SplashFOAM - a dynamic wrapper/GUI for OpenFOAM. ✅ T-Flows Crash Course (TFCC): from basics to guru-level applications. ✅ Latest CFD Literature: regular updates on the freshest CFD studies. ✅ Open source development: Latest updates in open-source CFD. ✅ Academic project ideas: a plethora of ideas for your grad projects. ✅ Monthly CFD virtual coffee: A relaxed, insightful CFD chats. ✅ Resource sharing: Access to top-quality CFD articles and resources. ✅ CFD job opportunities: Land your dream CFD job (updated weekly). ✅ Judgment-free atmosphere: No question is stupid there! ✅ Collaborative projects: working together on real-world CFD projects.
1d •
IDDES simulation in OpenFOAM diverging due to CFL instability
Hi everyone, I’m working on an IDDES simulation in OpenFOAM for a Formula car. My RANS simulation runs fine, and I’d like to use mapFields to take that solution as the initial condition for the IDDES run. From my understanding this should make sense, but please correct me if I’m wrong. I’ve also read that meshes designed for RANS are usually not suitable for LES. Would the same be true for IDDES? If so, what kind of modifications would be necessary? At this point I’m not really sure how to proceed. I’ve tried different setups, but the simulation always blows up. Below are the parameters I’ve modified in case someone can give me some guidance. The main issue I’m facing is with the Courant number. Should it always be < 1 for IDDES? Here’s how I tried to control it in controlDict: runTimeModifiable true; // allow controlDict to be read at each timestep adjustTimeStep true; // allow timestep to change based on maxCo deltaT 2e-6; // initial timestep value, adjustable at each iteration maxCo 1.0; // maximum CFL, deltaT changes based on this maxDeltaT 0.05; // upper limit for deltaT This gives acceptable values at the beginning, but after a while the CFL starts growing uncontrollably and the simulation diverges. Other parameters I’ve set are: LESModel: kOmegaSSTIDDES delta: IDDESDelta In fvSchemes: div(phi,U) Gauss DEShybrid linear // scheme 1 linearUpwind grad(U) // scheme 2 hmax 0.65 // DES coefficient, typically = 0.65 1 // Reference velocity scale 0.028 // Reference length scale 0 // Minimum sigma limit (0-1) 1 // Maximum sigma limit (0-1) 1; // B function limiter, usually 1e-03 div(phi,k) bounded Gauss upwind; div(phi,omega) bounded Gauss upwind; div((nuEff*dev2(T(grad(U))))) Gauss linear; Solver: PIMPLE In fvSolutions (under-relaxation factors): fields { p 0.3; } equations { U 0.7; k 0.7; omega 0.7; "(U|k|omega)Final" 1.0; } Any advice on how to stabilize the simulation or set this up properly would be really appreciated. Thanks in advance!
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21d •
CFD Role at Audi F1
For all fresh graduates looking for an opportunity in F1, this is your shot! Good luck :) [Applications have to be submitted through the main Sauber URL below] https://sauber-group.jobs.personio.de/job/2322171?language=en&display=en
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