Category: Featured

Dispersed particles in OpenFOAM 14 with the injectionChannel tutorial: MP-PIC Lagrangian cloud coupled to the air, injection and diameter distribution, Wen–Yu drag, rebound, stick and escape wall rules, a closed mass balance from the log, deposition maps and the effect of gravity, with every script and the downloadable archive.

Dynamic meshes and moving walls in OpenFOAM 14 with the movingCone tutorial: ALE formulation and relative flux, square-wave pointMotionUx, velocityComponentLaplacian with directional diffusivity, meshToMesh remapping and its six events, movingWallVelocity, Courant number, volume conservation and mesh quality, towards the peristaltic pump, with every script and the downloadable archive.

Guide 11 deep dive: the OpenFOAM 14 coupledTemperature condition line by line, the foamMultiRun loop, the stability theory of partitioned methods (Giles, Verstraete and Scholl, Errera, CHAMP), monolithic versus partitioned, an executable 1D model, reference values and a verification protocol for heatedDuct.

Guide 15 deep dive: what “frozen rotor” means in the OpenFOAM 14 MRF method, from Luo, Issa and Gosman (1994) to Brucato et al. (1998), inner–outer, sliding grid, snapshot, mixing plane, harmonic balance, RANS and LES, MRF-zone sensitivity and a verification protocol on mixerVessel2DMRF.

Rotating machinery in OpenFOAM 14 with the mixerVessel2DMRF and TJunctionFan tutorials: MRF region, rpm and omega units, MRFnoSlip, the fan as a fanPressureJump pressure jump, flow rates and kinematic pressure, fan curve, system curve and operating point, torque and power, with every script and the downloadable archive.

Porous media in OpenFOAM 14 on the porousBlockage tutorial: bypassable porous obstacle and full-section slab, cellZone, porosityForce and the Darcy–Forchheimer law, kinematic pressure and conversion to pascals, aU + bU² regression, permeability and Ergun, with every script, the run-script fix and the downloadable archive.

The VOF method in OpenFOAM 14 on the damBreakLaminar tutorial: collapse of a water column in air and water–oil redistribution in a closed tank, incompressibleVoF, interface compression, MULES, interfacial tension, pressure reference, phase balances and ParaView analysis, with every script.

Passive tracer transport in OpenFOAM 14 on the pitzDailyScalarTransport tutorial: advection, diffusion, Péclet number, numerical diffusion, scalarTransport and the functions solver, a four-case campaign, linearity test, tracer balance and residence times, with every script.

Conjugate heat transfer in OpenFOAM 14 on the heatedDuct tutorial: three coupled regions (water, metal and heater), foamMultiRun, coupledTemperature, volumetric source, energy storage and energy balance, with monitoring functions and every script.

Heat transfer and natural convection in OpenFOAM 14 on the buoyantCavity tutorial: energy equation, perfect gas and p_rgh, thermal wall conditions, heat flux with wallHeatFlux, Nusselt number and energy balance, comparison with the experimental data and every script.