Lagrangian Particle Tracking Simulation in COMSOL Multiphysics^®

Name: Lagrangian Particle Tracking Simulation in COMSOL Multiphysics®
Uploaded: 2018-04-23 15:36:06
Duration: 48 min 56 s
Description: Learn how to perform Lagrangian particle tracking simulations in the COMSOL Multiphysics® software. Watch the archived webinar.

Duration: 48:56

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Overview
Transcript

In this archived webinar, learn about simulating Lagrangian particle tracking (LPT) with the COMSOL Multiphysics^® software. Get a demonstration of how to subject particles in a fluid to lift, drag, electromagnetic and thermophoretic forces, as well as turbulent flows.

Want to learn more about simulating particle tracking in fluids with COMSOL Multiphysics^®? Contact us for a software evaluation.

Chapter Selection

Introduction (0:00) Essentials of Particle Tracing (2:05) Define the Particle Species (4:14) Equations of Motion (4:46) Numerical Formulations (5:05) Wide Variety of Boundary Conditions (5:32) Multiphysics Couplings (5:59) Drag Forces (6:39) Drag Forces Live Demo (7:14) By the Numbers (17:59) By the Numbers (Part 1) (18:16) Fluid Reynolds Number (18:39) Laminar or Turbulent Flow? (19:03) By the Numbers (Part 2) (19:51) Relative Reynolds Number (20:01) Typical Relative Reynolds Numbers (20:15) The Drag Force (20:46) Some Drag Correlations (21:10) Cutoffs for Drag Correlations (21:38) By the Numbers (Part 3) (22:36) Effects of Time Step Size (23:08) Example: Particle in Uniform Flow in 1D (23:39) 1D Benchmark: Speed and Distance (24:16) 1D Benchmark: Absolute Errors (25:04) Time Stepping: General Comments (25:41) Turbulent Dispersion (26:05) Turbulent vs Molecular Diffusion (27:20) Live Demo (35:30) Discrete Eddy Interactions (28:25) Discrete Random Walk Model (29:02) Continuous Random Walk Model (29:15) Solver Considerations (29:25) Turbulent Dispersion in a Channel Model (29:53) Turbulent Dispersion in a Channel Demo (31:10) Results: Number Density vs Position (31:56) More Built-in Forces (33:54) Example: Acoustic Levitation (34:22) Example: Dielectrophoretic Force (34:38) Demo: Dielectrophoretic Separation (34:54) Q&A (43:35)