OpenFOAM Tutorial – Chapter 2 (Part 9): ParaView Glyphs & Stream Tracer (Vectors + Streamlines) скачать в хорошем качестве

OpenFOAM Tutorial – Chapter 2 (Part 9): ParaView Glyphs & Stream Tracer (Vectors + Streamlines)

In this part of OpenFOAM Chapter 2 (Part 9), we continue with the cavity.foam case and learn two of the most useful ParaView tools for understanding flow behavior: ✅ Glyphs (velocity vectors / arrows) ✅ Stream Tracer (streamlines seeded from a line) What you’ll learn in this video 1) Glyphs (visualizing vectors) We create a Slice first, then use Glyph to draw velocity arrows on the slice plane. You’ll see how to: set a practical Scale Factor (example: ~0.235) use No Scale Array (so arrows aren’t re-scaled by another field) color arrows by velocity magnitude (|U|) try different Color Map presets for clearer patterns 2) Seeing arrows inside the full cavity We turn the full cavity back on and make it slightly transparent using Opacity, so the vectors on the middle slice are visible inside the volume. 3) Stream Tracer (streamlines) We activate Stream Tracer to plot streamlines that show the path of fluid particles. We use a Line Seed defined by Point 1 and Point 2 to reproduce the official tutorial result (a line through the cavity center, oriented in the Y-direction). 4) Controlling streamline length and density We adjust key parameters like: Maximum Streamline Length (avoid “cut off” streamlines) Resolution / number of seeds (example: reduce from high values down to ~21 for clarity) 5) Combine streamlines with Slice We color streamlines by velocity magnitude and turn the Slice back on to view stream patterns together with pressure/velocity fields — a super powerful combination. Why this matters Good post-processing is not “just visualization.” It’s how you actually understand the physics behind your CFD results—so you can make better decisions about your model, your setup, and your design. Keywords (copy/paste) OpenFOAM, ParaView, ParaFoam, cavity.foam, CFD post processing, glyphs paraview, velocity vectors, vector field visualization, stream tracer paraview, streamlines, slice paraview, line seed stream tracer, opacity paraview, color map preset, velocity magnitude, OpenFOAM beginner tutorial, CFD visualization Hashtags #OpenFOAM #ParaView #CFD #ParaFoam #PostProcessing #OpenFOAMTutorial #CFDTutorial #Streamlines #VelocityVectors #EngineeringSimulation