KnowraDirect numerical simulationLinked fromLinked fromThe 5 pages that link to Direct numerical simulation, each with the reason it gives.All 5Broader topic 1Related 1Compared with 3Computational fluid dynamicsBroader topic: DNS is a high-fidelity CFD approach, but its cost restricts practical flow sizes and conditions.Navier–Stokes equationsCompared with: It tests the equations directly but becomes prohibitively expensive for high-Reynolds-number flows.TurbulenceCompared with: It represents turbulence directly but becomes prohibitively expensive at high Reynolds numbers.Spectral methodRelated: Spectral methods are common in simulations of turbulence in periodic domains.Large eddy simulationCompared with: DNS resolves scales LES models, but its computational cost grows sharply with Reynolds number.