OpenFOAM Tutorial – Chapter 2 (Part 10): Mesh Refinement + mapFields (Coarse → Fine) for cavity скачать в хорошем качестве

OpenFOAM Tutorial – Chapter 2 (Part 10): Mesh Refinement + mapFields (Coarse → Fine) for cavity

In Chapter 2 (Part 10), we take the same cavity tutorial and do a real-world CFD workflow step: ✅ refine the mesh (increase resolution) ✅ map the converged coarse solution onto the refined mesh using mapFields ✅ continue the simulation with faster convergence and stable Courant number What you’ll learn 1) Create a refined case folder (cavityFine) inside your user Run directory. 2) Copy the original tutorial setup (constant + system) from the OpenFOAM tutorials. 3) Refine the mesh in blockMeshDict from 20×20×1 to 40×40×1 and regenerate with blockMesh. 4) Map the solution from the coarse case to the refined case using mapFields -consistent (same patch names/structure). 5) Fix the mapped time folder so you map from the latest coarse time (e.g., 0.5) instead of getting an incorrect 0/. 6) Update deltaT to keep the Courant number less than 1 (halve the time step when cell size halves). 7) Adjust write settings (writeControl / writeInterval) and continue the refined run with icoFoam (optionally logging to a file). 8) Visualize the refined mesh in ParaView (Surface With Edges) and compare resolution. Key takeaway This coarse → refine → map → continue workflow is one of the most common ways to get better accuracy without wasting time restarting from zero. Keywords (copy/paste) OpenFOAM, icoFoam, cavity tutorial, mesh refinement, blockMeshDict, blockMesh, mapFields, mapFields consistent, coarse to fine mesh, solution mapping, CFD workflow, Courant number, deltaT stability, writeControl runTime, writeInterval, paraFoam, ParaView Surface With Edges, OpenFOAM beginner course Hashtags #OpenFOAM #CFD #icoFoam #ParaView #ParaFoam #MeshRefinement #blockMesh #mapFields #CFDTutorial #EngineeringSimulation