NURBs modelling is resolution independent until it's mapped to those cells., or voxels.
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The CAD-CAM, Auto-Cad software creates the wire-frame of terrific resolution which generates the grid surfaces as solutions of the equations for the mesh of cells ( the Boeing 747 required 8,388,608 of them ) for all the time steps the algorithm will run each x,y, and z address through to resolve the features of the flow.
One wing investigated at Princeton University had 294,012 cells, simultaneously solving coupled nonlinear equations for 1,474,560 unknowns.
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The 'power' of the CFD would only be constrained by computing capacity.
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Capacity isn't the whole story; there're also the algorithms. I like OpenVDB
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https://www.researchgate.net › publication › 259288658_VDB_High-Resolution_Sparse_Volumes_with_Dynamic_Topology
VDB: High-Resolution Sparse Volumes with Dynamic Topology
OpenVDB is a hierarchical data structure developed by Museth [11] of Dreamworks Animation. It is used for the efficient representation of sparse, time-varying volumetric data, discretized on a 3D...
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Looking at awesomeopensource.com/projects/computational-fluid-dynamics?category... it appear the only project using OpenVDB hasn't progessed in 2 years.
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Fluid Engine Openvdb ⭐ 2
Fluid simulation engine for computer graphics applications, which is based on OpenVDB
most recent commit 2 years ago
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Last edited by freebeard; 07-11-2022 at 04:50 PM..
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