Tag: initial conditions

Schematic 3D rectangular channel: inlet face on the left with prescribed velocity, outlet face on the right with pressure reference, flow arrow along +x and four lateral faces forming the walls patch

OpenFOAM 14 Part 3: Fields, Initial Conditions and Boundary Conditions

Written by giux | Published on Oct 16, 2026 | No comments

How to write and reason about the OpenFOAM 14 field files 0/U and 0/p: internalField and boundaryField, field classes and named dimensions, matching mesh patches, the mathematical meaning of fixedValue, zeroGradient and noSlip, foamDictionary checks and error diagnosis.

#boundary conditions #CFD #initial conditions #OpenFOAM