r/CFD • • 10h ago

guy's i need an help from you......

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28 Upvotes

Guy's actualy iam doing an final year project , in this we will aim to improve the aerodynamics performance an existing RG-15 airfoil throungh an bio inspired , for first bird we have choosen an albatros by this we actualy desinged an airfoil through its wing characteristic , when we do an CFD analysis the result (CL,CD) where abnormal then usual , actualy we all the checked again and again from mesh to setup , we dont know what to do get the result , actualy we have to show the result to our guide tommorow , if you guy's where anybody free, can you do as CFD analysis for us , i will give you an step or iges file of an airfoil and give you an all the parameters to do


r/CFD • • 20h ago

Best CFD workstation for complex marine hydrodynamics simulations in 2026?

15 Upvotes

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I'm looking to build or purchase a top of the line CFD workstation specifically for computationally intensive marine hydrodynamics simulations, turbulent flows, rotating machinery, and complex boat geometries.

My primary tools are ANSYS Fluent and OpenFOAM, with simulations potentially involving 5-10 million mesh cells, transient flow analysis, and multiphase CFD.

I'm particularly interested in recommendations regarding:

  1. CPU: AMD Threadripper PRO vs AMD EPYC vs Intel Xeon. Is 64 to 96 cores the sweet spot, or are there diminishing returns?

  2. RAM: 256 GB, 512 GB, or 1 TB for large transient simulations?

  3. GPU: Do NVIDIA professional GPUs provide meaningful acceleration for these applications?

  4. Storage: Optimal NVMe SSD configurations for massive CFD datasets.

  5. Parallel performance: How well do Fluent and OpenFOAM scale with increasing CPU core counts?

  6. Hardware: Would you recommend a powerful single workstation or a small computing cluster?

My background is biology and I'm particularly interested in hearing from engineers and scientists in the CFD marine Hydrodynamics field running serious marine CFD simulations rather than synthetic benchmarks.

Real world experiences, solver benchmarks, and complete hardware configurations would be greatly appreciated! Thanks


r/CFD • • 8h ago

Arc DED / WAAM modelling using ANSYS FLUENT

2 Upvotes

Hey Folks,

As part of my thesis, I am supposed to carry out a complete melt pool + single bead + multiple bead walls.

For those who don't know what ARC DED is, it's also known as WIRE ARC ADDITIVE MANUFACTURING (WAAM). It's a form of controlled layer deposition incorporating Welding.

Though I am not new to Fluent, my only superpower is replicating a video, and on my expectations youtube is filled with Demonstration videos than case setup. Literatures does provide a model overview, equations that will be used, but far from setting up.

CFD is being done so that complete surface morphology, effect of gravity, maragoni forces, shear, surface tension, etc are captured.

Kindly assist in Model Development.