MODULE II: SIMULATIONS

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Presentation transcript:

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 13699-5727 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. http://www/clarkson.edu/projects/crcd • 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 (http://www.clarkson.edu/projects/crcd) • 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