1. MODULE II: SIMULATIONS
PARTICLE TRANSPORT AND DEPOSITION- A WEB-BASED COURSE SEQUENCE
A COMBINED RESEARCH & CURRICULUM DEVELOPMENT PROJECT
G. Ahmadi, D.J. Schmidt, J. McLaughlin, C. Cetinkaya,
S. Doheny-Farina, J. Taylor, S. Dhaniyala, and F-G. Fan
Clarkson University
Potsdam, NY
OBJECTIVES
MODULE II: SIMULATIONS
• Fundamental study of transport, dispersion, deposition and removal of particles.
• Hydrodynamics, van der Waals, electrical, capillary and thermal forces.
• Computational simulation of particle transport, deposition, dispersion, and removal.
• Hands-on measurements of particle dispersion, deposition and removal.
• Simulation Methods • Brownian Motion of Nanoparticles
• Laminar Flow Simulation • Spherical Particle Resuspension
• Spherical Particles in Laminar Flow
Simulation: Brownian Motion
Simulation: Flow & Particle Transport
MODULE I: FUNDAMENTALS
• Introduction to Aerosols • Aerosol Kinetics
• Hydrodynamic Forces (Drag, Lift) • Particle Deposition Mechanisms
• Brownian Motion • Gravitational Sedimentation
• Convective Diffusion • Aerosol Coagulation
Fundamentals: Lift Force in a Turbulent Boundary Layer
Mollinger
Hall
Saffman
Leighton
Experiment
Fundamentals: Drag Force
Drag
Gravity
Fundamentals: Particle Adhesion and Detachment Models
Fundamentals: Lift Force (Wall Effects)
Lift d l
Example: Sphere attached to a surface
a = Contact Area
P = Exerted Force
Fad = Adhesion Force
MODULE III:
EXPERIMENTAL TECHNIQUES
WEBSITE
MODULE IV: APPLICATIONS (
• Microcontamination Control (e.g., Air Pollution)
• Surface Cleaning
• Clean Room and Process Equipment
• Ultrasonic and Megasonic Cleaning
• Environmental Applications
• Particle Adhesion Measurement
• Particle Removal
• Surface Cleaning
• Laser Surface Cleaning
Applications: Air Pollution Near Peace Bridge
Experimental Techniques: PIV Measurements
Experimental Techniques: Aerosol Wind Tunnel