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Scientific Computing Lab Introduction to COMSOL - Multiphysics Dheevatsa Mudigere Institut für Informatik Scientific Computing in Computer Science

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COMSOL - Multiphysics COMSOL Multi-physics (formerly FEMLAB) is a commercial finite element analysis and solver package for various physics and engineering applications.

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Example - 2D steady-state thermal analysis Domain - 0.6×1.0 meters. Boundary conditions: –The left boundary is insulated. – The lower boundary is kept at 100 °C. –The upper and right boundaries are convecting to 0 °C with a heat transfer coefficient of 750 W/(m 2 °C). Material Properties –Thermal conductivity is 52 W/(m °C). –Density, ρ - 7850 kg/m 3

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Starting COMSOL /usr/local/applic/bin/comsol

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Starting COMSOL

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Geometric Modeling Draw> Specify Objects>Rectangle

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Physics Settings - Boundary Conditions Physics> Boundary Settings>

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Physics Settings - Boundary Conditions Physics> Boundary Settings>

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Physics Settings - Boundary Conditions Physics> Boundary Settings>

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Physics Settings – Sub-domain settings Physics> Subdomain Settings>

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Mesh Generation Intialize Mesh>

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Solving Solve>

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Post-processing Postprocessing>

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