comsol training series (nnmdc initiative)
TRANSCRIPT
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COMSOL Training Series
Session 1:Introducing COMSOLSimulating a Microfluidic Mixer
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Multiphysics Simulation
…what it is
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…study of systems involving multiple simultaneous physical phenomena
…What is Multiphysics?
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Physical System
Reaction Kinetics
Heat Transfer
Fluid Flow
And more!!
Electro-magnetism
Waves
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Why Simulate?
…design validation
Eigen-frequency analysis on Crankshaft
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Why Simulate?
…design optimization
Cooling air flow optimization in turbine stator
blade
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Why Simulate?
…just for fun! (?)
Convective Cooking of
Chicken Patties!
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How to Simulate?
…philosophy ofFinite Element Modeling
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3 Fundamental Concepts…
To Results!
Solve for each node & Color!
Discretize the Domain
Define Physical Phenomena as
PDEs
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Discretization…
Chopping down a continuum body into finite number of elements…
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Defining the Phenomena…
Define what happens to the system in form of Partial Differential Equations (PDEs)…
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Solve, Store & Color…
Solve the PDEs over the grid, store values at each node and color on RGB scale…
Low
Medium
High
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How to do it by COMSOL?
…Getting Started
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• Create CAD geometry or importGeometry
• Define material propertiesMaterials
• Define parameters & custom FunctionsGlobal Definitions
• Choose/define PDEs to be solved & coupled• Set boundary conditions for each PDEPDE Choices
• Create mesh• Allot suitable mesh to specific PDEMesh
• Choose study type• Choose numeric settingsSolver
• Visualize the contour plots• Abstract resultsResults/ Post-Processing
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Example One
…The Microfluidic Mixer
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Today, the world needs state-of-art µ-TAS (Micro Total Analysis Systems)…
Micromixers are components of µ-TAS used for obtaining rapid mixing of fluid samples in a short length…
Photocredits: orgatronics [dot] com
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Simulating the Micromixer
…formulation
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PDEs in the domain…
Navier Stokes & Continuity Equations
Convection-Diffusion Equation
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Let’s Begin!
…on to COMSOL