When Pressure Rings in a Checkerboard — SIMPLE and Rhie-Chow Coupling
·5 min read
Why collocated pressure checkerboards, how Rhie-Chow fixes it, and the SIMPLE loop
When Gradients Go Wrong on Skewed Meshes — Green–Gauss vs. Weighted Least-Squares Reconstruction
·5 min read
Two ways to build cell gradients on unstructured meshes, and which one survives distortion
Solving an Impeller by Holding It Still — Rotating Frames and MRF
·6 min read
Coriolis and centrifugal source terms plus the MRF interface transform, checked in code
[CFD Q&A] When simpleFoam Pressure Residual Fails to Converge
·3 min read
A troubleshooting guide for SIMPLE algorithm divergence in practice — relaxation factor settings were the key.
[OpenFOAM Tutorial] Backward Facing Step Flow Analysis — Capturing Recirculation Zones with simpleFoam
·2 min read
A step-by-step guide to analyzing incompressible flow over a Backward Facing Step using OpenFOAM simpleFoam.
Rhie-Chow Interpolation for Compressible Multiphase Flows
·11 min read
From the checkerboard problem on collocated grids to balanced-force multiphase flows, we systematically summarize the mathematical essence and OpenFOAM implementation of Rhie-Chow interpolation.