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  • Industry Specific Products
    supplied to schools participating in the F1 In Schools Challenge which is a competition open to all UK based secondary schools and colleges to design and manufacture CO2 powered model racing cars Student teams compete nationally to determine the best engineered and fastest car It is like being in a real Formula One team well the nearest most of us will get to that experience anyway The competition is run by F1 in Schools Limited a non profit making organisation see www f1inschools com HeatEx HeatEx simulates the performance of shell and tube heat exchangers including all the various Tema flow configurations without any of the limitations encountered due to the manual or numerical methods commonly used to rate heat exchanger performance PHOENICS VR VARIANTS PHOENICS FLAIR FLAIR was created for architects design engineers and safety officers concerned with the performance of air flow systems for the built environment The software is self contained for model set up and result analysis FLAIR enables users to visualise evaluate and refine air flow patterns on a micro or macro scale within a room throughout a building around a building complex within tunnels or in any other structure of this nature FLAIR enables users to check on environmental or ventilation flows before embarking on costly construction Click here for examples and here for more information about FLAIR Hevacomp has joined forces with CHAM to link Hevacomp s Dynamic Thermal Simulation package to CHAM s PHOENICS FLAIR CFD solver Click here more more details PHOENICS CVD PHOENICS CVD is an integrated software system designed to simulate the behaviour of a wide range of CVD reactors this involves the modelling of fluid flow and heat transfer in a multi component gas including both gas phase homogeneous and surface heterogeneous chemical reactions and incorporating plasma effects

    Original URL path: http://www.cham.co.uk/products/industryspecific.php (2016-02-15)
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  • Special Features
    the VR Editor The user can do this by way of easy to write formulae which are interpreted by the code which then performs the specified computation MOFOR MOFOR MOving Frame Of Reference models flows induced by bodies in motion Uses for MOFOR range from the study of rotating machinery to the air flow over a ski jumper to help optimise posture for the reduction of drag and therefore maximise jump distance PARSOL PARSOL PARtial SOLid enables PHOENICS to provide accurate flow simulations without the need to create time consuming unstructured grids This makes PHOENICS accessible to the non CFD expert as it obviates the need to learn the tools to create such grids Guaranteed Convergence A guaranteed automatic convergence algorithm has been developed and included in the latest version of PHOENICS Most CFD code ie not just PHOENICS users have until now had to adjust convergence and relaxation parameters to achieve a converged solution This development removes the need to run a case overnight to find that it shows no sign of convergence the following morning PHOENICS PLUS PHOENICS PLUS GROUND coding allows users to create customised environments to suit specific needs Where an organisation does not have the

    Original URL path: http://www.cham.co.uk/products/specialfeatures.php (2016-02-15)
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  • Modelling Capabilities
    geometries PHOENICS by default actually uses a Cartesian cut cell method named PARSOL PARtial SOLid which provides an automatic efficient and flexible alternative to traditional boundary fitted grid methods using curvilinear coordinates The Cartesian cut cell approach uses a background Cartesian or cylindrical polar grid for the majority of the flow domain with special treatments being applied to cells which are cut by solid bodies thus retaining a boundary conforming grid Specifically the method computes the fractional areas and volumes and employs a collection of special algorithms for computing interfacial areas evaluating wall shear stresses and for computing advection and diffusion near solid boundaries etc The finite volume equations for each variable are derived by integrating the partial differential equations over each control volume Fully implicit backward differencing is employed for the transient terms and central differencing is used for the diffusion terms The convection terms are discretised using hybrid differencing in which the convective terms are approximated by central differences if the cell face Peclet number is less than 2 and otherwise by upwind differencing At faces where the upwind scheme is used physical diffusion is omitted altogether In addition to the upwind and hybrid differencing schemes PHOENICS is furnished with an extensive set of higher order convection schemes which comprise five linear schemes and twelve non linear schemes The linear schemes include CDS QUICK linear upwind and cubic upwind The non linear schemes employ a flux limiter to secure boundedness These schemes include SMART H QUICK UMIST SUPERBEE MINMOD OSPRE MUSCL and van Leer harmonic The integration procedure results in a coupled set of algebraic finite volume equations which express the value of a variable at a grid node in terms of the values at neighbouring grid points and the nodal value at the old time level For unsteady flows PHOENICS by default solves each of these equations by an implicit method but the option exists to revert to an explicit method which is stable only when the Courant number is less than or equal to unity The explicit method uses old time neighbour values whereas the implicit method uses values at the new time level Although implicit methods allow a much larger Courant number than the explicit methods it is not unconditionally stable since the non linearities in the equations often limit numerical stability The finite volume equations are solved iteratively using the SIMPLEST and IPSA algorithms of Spalding which are embodied in PHOENICS for the solution of single phase and two phase flows respectively These algorithms are segregated solution methods which employ pressure velocity coupling to enforce mass conservation by solving a pressure correction equation and making corrections to the pressure and velocity fields Multi phase flows are accommodated using either an Eulerian Lagrangian method using particle tracking or an algebraic slip model The latter solves mixture continuity and momentum equations and a volume fraction equation is solved for each dispersed phase Algebraic relationships are used for slip velocities relative to the mixture The default calculation

    Original URL path: http://www.cham.co.uk/products/modellingcapabilities.php (2016-02-15)
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  • Parallel PHOENICS
    on a model with 20 million cells It can be seen that there is not a linear relationship between the number of processors and the speed up ratio This is because for each additional processor added to the computation pool there is an additional overhead Eventually a limit will be reached whereby adding additional processors does not lead to a faster solution time What this limit is depends on the computational domain under consideration What is PHOENICS parallel The EARTH module uses most of the computing time and therefore it is only this part of PHOENICS which is ported to the parallel computer The strategy employed is grid partitioning also called domain decomposition whereby the computational domain is divided into sub domains each of which is assigned to a particular processor having its own identical copy of the EARTH executable During the computation each processor exchanges information with its neighbours at the appropriate times In the parallel EARTH implementation a single processor controls the input output acting as a server to the other processes this is called the Master processor PROC 0 Its main input operation is the reading from disk of the problem defining data files and the broadcasting

    Original URL path: http://www.cham.co.uk/products/parallel.php (2016-02-15)
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  • PHOENICS Chronicle
    insight into how PHOENICS has developed Please click on one of the topics below for more information What s new in PHOENICS 2015 What s new in PHOENICS 2010 What s new in PHOENICS 2009 What s new in PHOENICS 2008 What s new in PHOENICS 2007 What s new in PHOENICS 2006 What s new in PHOENICS 3 6 1 2005 What s new in PHOENICS 3 6 2004

    Original URL path: http://www.cham.co.uk/chronicle.php (2016-02-15)
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  • Contact CHAM Japan
    CHAM PHOENICS News Winter 2015 Flash Version of Latest News Letter Contact CHAM Japan CHAM Japan 3 27 Kioi cho Chiyoda ku Tokyo 102 0094 Japan Tel 81 35 21 09 356 Fax 81 35 21 09 359 Web www

    Original URL path: http://www.cham.co.uk/contactjapan.php (2016-02-15)
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  • CHAM World-wide Agents
    Visit FRANCE ArcoFluid email Contact Us web Visit GERMANY Coolplug BV email Contact Us web Visit ITALY Lasertec SRL email Contact Us web Visit JAPAN Itochu Techno Solutions Corporation email Contact Us web Visit KOREA Intech Systems email Contact Us web Visit MALAYSIA Focus Advanced Technologies Sdn Bhd email Contact Us web Visit MEXICO Vortex de Mexico email Contact Us NETHERLANDS A2TE email Contact Us web Visit NORWAY Fluid Dynamics

    Original URL path: http://www.cham.co.uk/agents.php (2016-02-15)
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  • Find CHAM
    click to zoom image View CHAM offices with Google maps in new window Getting to CHAM via public transport The closest London Underground and train station to CHAM is at Wimbledon From central London the quickest route is to take the overground service from Waterloo For more details on how to get to Wimbledon station try the Transport for London s Journeyplanner http journeyplanner tfl gov uk From Wimbledon station

    Original URL path: http://www.cham.co.uk/locate.php (2016-02-15)
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web-archive-uk.com, 2016-10-23