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'''Hardcore developer brainstorming on fluid modeling''' Fluid can be liquids or gases where flow or heat-transfer properties are of interest, particularly when they interact with container wall or other solid materials (pipe, cylinder, fan, etc...) . '''Desings that benefit from fluid modelling''' * cylinder head * InTake/DryManifold (and plenum) * InTake/InterCoolers * TurboChargers * Airbox * ... Experimenting with real hardware is expensive. Much material, tool and machining (human - time) resources are needed. There are software tools to model the behaviour with high precision. At least 30% of Ferrari's formula-1 success is from such fluid-modeling tools (the engine, the chassis with spoilers, radiators, and flow around them, brakes). ---- '''Off the shelf tools''' A respected provider of such tools is [http://www.fluent.com/software/fluent/index.htm?select1=%2Fsoftware%2Ffluent%2Findex.htm&image.x=12&image.y=15 Fluent]. ---- '''In the guts of fluid-modelling tools''' These tools work with finite-element models. The heat and particle-flow equations are solved for the boundaries with sufficient time-granularity. Interestingly the basic equations of fluid modeling can be described in 10 pages. A few years ago when I looked into it, I even found compilable code in a book at the library. At that time I found no usable opensource software on the internet. * basic fluid modelling equations * making fluid modelling fast ** more advanced formulas ** tricks ** cluster-networking (distributing load between nodes) * '''modeling tools''' to provide input data for the simulations * '''visualization tools''' to help analyze the simulation output * import / export filters to bridge with CAD programs Most likely the first 2 items are relatively simple, but the other parts are prohibitive. ---- '''Opensource tools''' Today there are some interesting stuff up there. * google: fluid flow model source * http://www.physics.orst.edu/~rubin/COURSES/ph417/Brian/ * LISA: http://www.lisa-fet.com/index1024.htm Incompressible fluids only, I think. * Code Aster: http://www.code-aster.org/ French, but appears very powerful. Not much it can't do... http://www.code-aster.org/produit/fonctionnalites.php '''Other''' * google: avl-boost * fluid32 flow analyser: http://www.raczynski.com/pn/fluids.htm ** This is really really slow, and modelling is tricky (IMHO) * cfx products: http://www-waterloo.ansys.com/cfx/products/ * http://lesoft.co.uk/ full engine modeling
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