OpenFOAM Dam Break: Fluid Properties (transportProperties, sigma, gravity g) | Ch7–Part 5 скачать в хорошем качестве

OpenFOAM Dam Break: Fluid Properties (transportProperties, sigma, gravity g) | Ch7–Part 5

In Chapter 7 – Part 5, we focus on one of the most important setup steps in multiphase OpenFOAM cases: defining fluid properties correctly for water + air in the damBreak tutorial. We’ll go through the exact files OpenFOAM uses for interFoam and explain what each parameter means physically. What you’ll learn in this video ✅ 1) constant/transportProperties How OpenFOAM defines phases (Water / Air) Why phase names are not “special” (you can rename them, but must be consistent) For each phase: transportModel (Newtonian here) Kinematic viscosity nu Density rho ✅ 2) Surface tension sigma What sigma represents (surface tension between phases) Why it matters in interFoam (interface curvature → surface-tension force in momentum equation) ✅ 3) Gravity: constant/g Dimensions and vector direction of gravity Typical damBreak setup: -Y direction with magnitude 9.81 m/s² ✅ 4) Turbulence model This tutorial is laminar, but you can later switch to turbulence models for more advanced cases Next part (Part 6) We’ll set time controls, simulation parameters, time-step behavior, and output settings—so the case runs correctly and produces clean results. #OpenFOAM #CFD #MultiphaseFlow #interFoam #DamBreak #transportProperties #SurfaceTension #sigma #gravity #gFile #FluidProperties #VOF #OpenFOAMTutorial #ComputationalFluidDynamics #Linux