Importance of Accurate Fluid Dynamics in CAD Simulations

I’ve been working on pipeline simulations and noticing that small errors in fluid dynamics can lead to significant discrepancies in predictions. For instance, even a 1% variation in viscosity can drastically change flow rates, which is critical for accurate system design. I’m curious about the best practices you all use to ensure simulation accuracy in your CAD work.

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I’ve found that using a detailed mesh refinement strategy can really help catch those small discrepancies before they become issues. As you mentioned, even 1% off in viscosity has a big impact, so I focus on convergence checks with varying mesh sizes to ensure accuracy. Have you tried that?

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It’s so true how tiny variations can throw things off; it’s like trying to bake a cake with a dash too much salt. I once had a simulation go haywire from a viscosity error that seemed minor at first. I’ve started double-checking material properties and using validation tests more rigorously — @FluidDynamicsGuru’s tips on mesh refinement really got me thinking more critically about simulation setups.

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