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SUMMARY:OpenFOAM: Numerical Simulation in Computational Continuum Mechanic
 s - Professor Hrvoje Jasak\, The Cavendish Laboratory
DTSTART:20241108T160000Z
DTEND:20241108T170000Z
UID:TALK222796@talks.cam.ac.uk
CONTACT:Professor Grae Worster
DESCRIPTION:Numerical simulation of continuum mechanics equations poses an
  interesting challenge in the compromise between software efficiency and f
 lexibility in expression of complex\nand coupled equation sets. While in s
 ome cases Computational Continuum Mechanics (CCM) simulations are a matter
  of routine industrial practice – such as Computational Fluid Dynamics (
 CFD) – there exists an enormous scope where identical discretisation too
 ls may be used on other equation sets. One possible answer to this challen
 ge is the programming technique of object orientation. OpenFOAM (Field Ope
 ration And Manipulation) is an open source object oriented numerical simul
 ation library aimed at complex physics modelling and will be described in 
 this seminar.\n\nOpenFOAM handles continuum models by mimicking partial di
 fferential equations in software. Polyhedral Finite Volume discretisation 
 is implemented in operator form (e.g. temporal derivatives\, gradient\, di
 vergence\, source and sink terms)\, and operators are combined to form equ
 ations. Efficiency and elegance in implementation are achieved through lay
 ered development and extensive code re-use\, where various components (e.g
 . mesh handling\, field algebra and calculus\, discretisation\, linear alg
 ebra and solvers\, dynamic meshing etc.) are developed and validated in is
 olation. Combination of individual blocks results in a powerful\, flexible
  and efficient industrial-strength software solution. Auxiliary tools supp
 ort the basic solvers\, providing pre- and post-processing interfaces\, dy
 namic mesh handling\, real material properties\, massive parallelism\, Lag
 rangian particle model and other tools present in a modern CFD solver. The
  library is completed with a suite of relevant physical models. Today\, Op
 enFOAM is a leading Open Source CFD tool with over 100000 users in industr
 y and research community.\n\nIn this talk\, ideas underlying the design of
  OpenFOAM\, critical efficiency components and various examples of applica
 tion will be presented\, ranging from external aerodynamics\, multi-phase 
 and free surface flows to more interesting examples of Multiphysics and st
 rongly non-linear equation coupling.\n
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