PHOENICS - Arcofluid

PHOENICSNewsSpring 2005News from the pioneers of computational fluid dynamics

3) Solids moving through fluidsAnother aspect of fluid-structure interactions is theirrelative motion, for which PHOENICS has possessed theMOFOR facility for several years.EditorialB R O ADENI N G T H E H O R I Z O N2004 was an especially busy year for CHAM developmentpersonnel with effort concentrated on the production ofthe PHOENICS-3.6 release, announced in the AutumnNewsletter, and upgrading some special-purpose variantssuch as the FLAIR (building services) and ESTER(aluminium smelting) modules. Details of the some of therecent updates are outlined later in this newsletter.1) PHOENICS CommanderWe have also been paying particular attention to first-timeusers of PHOENICS, for whom we have provided agreatly-enriched version of the PHOENICS Commander.This now serves as an informative and easy-to-usegateway to all PHOENICS capabilities.The new Commander is structured so that some userswill be able to use their own language rather than English.At present, this facility is embryonic, with priority given toRussian, which is being used as the trailblazer because itpresents the difficulty of requiring a different characterset.However, when this first non-English language is wellestablished, extensions to other languages will followquickly.This too has been improved, especially in relation to itscombination with PARSOL for curved bodies; and furtherextensions are planned. Ultimately it will be possible tocalculate how both the motion of the solid body, and thestresses within it, are influenced by the force exerted bythe fluid.4) The PHOENICS 'Wave Tank'Recently CHAM was asked to assist in the simulation of adevice for extracting energy from ocean waves. Ratherthan create a one-use-only ad hoc model, CHAM choseto create a 'Computational Wave Tank' which can beused for all the purposes for which physical wave tanksare now used:o prediction of wave forces on oil platforms;o the modelling of ship and submarine motion; etc.What is worthy of mention is that this 'virtual tank' wascreated without any new Fortran coding whatever. All wasdone by way of In-Form statements inserted into a (quitesmall) Q1 file.In-Form is proving to be invaluable for those users ofPHOENICS who have novel problems, and who do notwish to create (or ask CHAM to create) the formerlynecessary specialised coding.Brian Spalding – Email: brianspalding@cham.co.ukCONTENTSFront Page:“SAFE Scandinavia”Picture courtesy ofLM FlowConsult2) Fluid-structure interactionsIt is widely believed that the use of finite-element codesfor solid-stress analysis and of finite-volume ones forfluid- and heat-flow is necessitated by a fundamentaldifference between the physics of solids and fluids.This is not so, as has been demonstrated by recentdevelopments in PHOENICS, which has been able tosimulate solids and fluids simultaneously since 1991.Admittedly, the algorithm then in use (a form of SIMPLE)proved to converge slowly; and did not handle bendingvery well; but a new algorithm has removed bothshortcomings.Since PHOENICS is the only CFD code, which possessesthis multi-physics capability, it is intended to make fluidstructureinteractions a field in which much PHOENICSdevelopment is concentrated.Page 2 EditorialPage 3 What’s New in PHOENICS-3.6.1 /FLAIR ValidationPage 4 Fuel Cell ResearchPage 5 CHAM Consultancy UpdatePage 6 To BFC or not-to-BFC?Page 7 Gas freeing of a very large CrudeCarrierPage 8 Special Needs Centre / Getting intoHot WaterPage 9 Porsche 911 / F1 VWT / Tidal PowerPage 10 Keeping a School CoolPage 11 News & EventsPage 12 Corporate Addresses / Agents2PHOENICS News Spring 2005

WHAT’S NEW IN PHOENICS-3.6.1The recent PHOENICS-3.6.0, outlined at:www.cham.co.uk/phoenics/d_polis/d_docs/tr006/tr006.htm, has been updated in the following ways:VR-Editor• Individual wall-functions for PLATE objects• Individual surface-roughness for PLATE objects• New WIND_PROFILE object• Attribute changes can be propagated through agroup or multiple selected objects• Objects can be re-ordered in Object-Management Dialog• Fire heat source as power of time in FLAIRFIRE object• New comfort indices for FLAIR - Draught rating,Percent Productivity Loss• Implementation of FLAIR DIFFUSER objectsimprovedVR-Viewer• Vector width can be set in pixels• Maximum vector length can be set• Source/sink information from RESULT for eachobject can be displayed from context menuEarth• Integer holding fate of GENTRA particle madeavailable in GENIUS• Accuracy of particle volume fraction improvedfor GENTRABug FixesVR-Editor• Freezing of FLAIR FIRE object dialog whenincompatible options selected fixed• Missing scalar sources for FLAIRPERSON/PEOPLE objects fixed• Creation of sub-objects for FLAIR DIFFUSER(displacement) object fixed• Array copy now obeys ‘object limited by domain’setting• Grid in ‘Edit all regions’ dialog now obeys‘object limited by domain’ setting• Crash due to insufficient array size whenreading large binary STL fixedVR-Viewer• Probe no longer linked to object position whenseveral objects are selected in Objectmanagement dialog• Colour palette no longer corrupted after savingstreamline animationEarth• Internal inlets/outlets with MOFOR active fixed• Missing transient term for all scalars whenMOFOR active fixed• Size of intermediate PHI files dumped duringMOFOR run greatly reduced• Areas and volumes held inSTORE(AREE,AREN,AREH,VOLU) no longerset to zero in blockages, and updated with cutcellvalues for PARSOL• Errors in conjugate heat transfer with PARSOLfixed• Error in treatment of Fine-Grid-Volume objectfixedVAL IDAT ION OF FLAIRThe Laboratory for Heating, Sanitary & SolarTechnology at Ljubljana University has validatedPHOENICS/FLAIR against their measurements ofvelocity and CO2 concentration in an officeenvironment purged by clean-air jets and directedtowards an occupant seated at a desk. A steadystateflow and thermal solution was produced, andthen this was used to initiate a transient simulationof the purging of a uniform distribution of CO2 fromthe room by clean air.C O 2 (p p m )3000250020001500100050000 1000 2000 3000 4000 5000 6000Time (s)Chen KE-EPMeritevThe plot shows the measured and predicted decayof CO2 concentration at a specified location in anoffice as a result of dilution by uncontaminated airjets.NEWSTANDALONE PHOENICS VIEWERPHOENICS licensing options have been extendedto offer the VR-Viewer as a stand-alone product,enabling clients to display and present results onmultiple systems whilst retaining the solverelsewhere. PHOENICS On-Line users will benefitsimilarly.Prices for the VR-Viewer start from £500 – contactsales@cham.co.uk for further informationPHOENICS News Spring 2005 3

FUEL CELL RESEARCHFuel cells have become the subject of much interestas a potential low-carbon-fuel substitute forconventional heat engines. Canada is currently aworld leader in the development of modern fuelcells. Researchers at the National Research Councilof Canada (NRC) have been using PHOENICS andother codes to model fuel cells since 1999.A fuel cell is an electrochemical device, whichconverts hydrogen-rich fuel and oxygen to electricity(and heat). Unlike a battery, a fuel cell does notrequire re-charging. Fuel cells are typicallyoperated in stacks in order to increase the operatingvoltage. We have studied both high-temperaturesolid oxide (SOFC’s) and low temperature protonexchange membrane fuel cells (PEMFC’s). Thetemperature distribution is critical to the operation ofboth PEMFC’s and SOFC’s.We have therefore taken a different approach, andused the unique features of PLANT, and theMultiply-shared Space (MUSES) method originallydeveloped to model heat exchangers, to performcalculations in planar SOFC’s based on a‘distributed resistance analogy’.In this methodology the bulk motion of the fluids issimulated, but the fine detail is lost. Fuel cells aremore complex than heat exchangers. Electric fieldpotential is affected by three main factors:(i) charge transfer also known as activation(kinetic) losses which occur at low currents,(ii) Ohmic losses associated with Joule heatingin the ionic and electronic conductors atintermediate currents, and(iii) mass transfer limitations in the gaspassages and porous diffusion layers thatcan be very important at large currentdensities.Thus it is necessary to include iterativecomputations for the electric field and currentdensity that are a non-linear function of temperatureand mass fraction of the fuel and oxidant, as part ofthe overall calculation procedure. Modification ofinter-phase transfer coefficients as a function of wallmass transfer effects is also incorporated.Schematic of passages in a typical solid-oxide fuel cellSeveral CFD code vendors are actively developingdetailed fuel cell modules for performancecalculations of the hydrodynamics andelectrochemistry within the passages of fuel cells forapplications in the automotive and stationary powerindustries.The main problem with the conventional approach isthat enormous meshes are required, to performflow-field calculations within the numerouspassages of the fuel cell. Moreover these flow fieldsare for the most part quite uninteresting; simpleinternal flow in curved ducts, hardly worthy of thefull solution of the pressure-corrected momentumequations.Results based on the MUSES method have beenvalidated carefully against detailed simulationsusing fine meshes. Agreement is excellent. We arealso exploring the use of the PARSOL cut-celltechnique to perform detailed calculations inPEMFC’s, for which we are simultaneouslydeveloping experimental and numerical results inorder to create a high quality database for futurebasic research and code validation.Dr Steven Beale, National Research Council ofCanadaEmail: Steven.Beale@nrc-cnrc.gc.caShare news, views and experiences with otherPHOENICS users via CFD Online – a free servicefor all.www.cfd-online.com/Forum/phoenics.cgi4PHOENICS News Spring 2005

CH AM CONSULT AN CY UPD AT ECHAM’s consultancy team continues to beemployed on a wide variety of interestingapplications. Perhaps none more so than thegroundbreaking project with Centro SviluppoMateriali SpA (CSM) completed earlier this year.The project was concerned with the creation of a 3-dimensional mathematical model of a continuouscastingprocess, incorporating solidification andelectromagnetic braking of steel. The modelpermits the simulation of casting and solidification ina curved domain, involving an electromagneticstirring action with a pre-defined coil current. MickHughes reports …Electromagnetic stirring of steel during continuouscasting of billets and slabs is a well-establishedtechnique that improves the quality of the castproducts by stirring the molten pool. Mixing of theliquid metal positively influences the solidificationprocess at the microscopic crystal level helping tomake the final cast less brittle.A model was developed to provide a means tostudy the large scale electromagnetically influencedflow and thermal behaviour in the sub-mould regionof continuous casting.Modelling coupled flow and electromagneticequations in three-dimensional eddy-currentproblems is a current and open area of research.This is largely due to the free boundary nature ofMaxwell’s equations and the subsequent difficulty ofrestricting the solution to the region of interest.CHAM’s novel approach to solving the problemincludes the following features:Various levels of model complexity can be activatedthrough the q1 input file such as a choice between a1D approximation to the electric field calculation ora novel 3D alternative calculation.The work provides a framework for the modelling ofan electromagnetically driven continuous castingsystem. The open nature of the PHOENICSenvironment has been fully utilised and theelectromagnetic physics has been integratedthrough GROUND coding.The solution of these time harmonicelectromagnetic equations is an exciting and newarea of research for CHAM and is at the vanguardof current research.Mick Hughes, Email: mh@cham.co.uk• 3-Dimensional simulations• Split simulation (the electromagnetic and flowsimulations are uncoupled)• Electric field (solved whilst the magnetic field iscalculated)• Coil implementation (external to the solutiondomain)• Alternating current low frequency conditions• Integral-differential approach to the EM solution(which limits the solution domain to the CFDdomain)• Steady-State time averaged solution of EMequations• Steady-State flow solution• Darcy type solidification model• Thermal analysis and latent heat sourcesPHOENICS News Spring 2005 5

T O BFC O R N O T T O BF C? – TH A T IS AQ UES T ION !Ventilation of road- and rail-tunnels is commonlymodelled using a Cartesian mesh in the VRenvironment. But what if the tunnel in question hascurves or undulations as in the case posed by theLand Transport Authority of Singapore? WouldBFC’s be more appropriate?Peter Spalding asked visiting student MohuiddinKhaja to investigate both approaches in order toassess the pros and cons.Concertinaed View – With Fans - CartesianHis conclusions?As one might expect, both the BFC and theCartesian-mesh approaches produced very similarresults. These showed an unacceptable build-up ofCarbon Monoxide in the tunnel, with acommensurate increase in air temperature, towardsthe exit of the tunnel when operating without fanassistedventilation. With fans operating, the figuresreduced to reasonable levels.Perspective View – With Fans – CartesianThe case involved a two-lane subterranean highwayin Singapore, through which flowed 2000 vehiclestravelling at 60Km/hour per hour; each vehiclereleasing 0.1863m 3 /s with a heat load of 16KW.The purpose of the study was to establish theeffectiveness of fans spread down the length of the1Km tunnel, on the heat and pollution levels createdby the traffic.Mohuiddin produced results for cases with andwithout fans and, as an exercise, used bothCartesian and Body-fitted meshes to take intoconsideration the +/- 3% incline in the tunnel itself.Concertinaed View - CO levels -CartesianCO level – no fans – BFC’sIn terms of problem definition and solution, themethods varied dramatically. The set up time usingBFC’s, for a novice user, took over a day to createthe model compared to less than half that using thebuilt-in shapes within the VR library. Conversely,the run-times using a 3MHz PC varied from a fewminutes using the BFC approach to up to 5 hourswith Cartesian. The reason being, of course, that allthe cells within the BFC case focussed on the flowdomain, whilst the alternative method involvedmany more cells, many of which were situated inblocked areas.Nevertheless, if one considers the cost of man-timeversus computer time, and the ease-of-use andgreater flexibility afforded by the Cartesianapproach – perhaps this remains the better method.Peter Spalding, Email: pls@cham.co.uk6PHOENICS News Spring 2005

GAS F REEING OF A VERY L ARGECRUDE C AR R IERWhen an oil tanker’s hold needs to be inspected, orhot work performed inside, gaseous vapours thatoriginate from crude oil in the tank must beevacuated. Traditionally this involves the use of ade-gasification or “gas-freeing" fan with flow-ratesupwards of 13,000 m 3 /h. The air is blown into thetank causing ventilation through mixing. However,when dealing with tank volumes upwards of20,000m 3 , with heavy vapours that sink to thebottom of a heavily partitioned tank, the efficiency ofthe fan in removing the vapours from such a largetank is unknown.PHOENICS was used to calculate and visualise theflow-field inside the tank to better understand themechanisms that drive this kind of large-scalemixing ventilation. Incorporation of multiple gaseousphases is taken into account through the use of thealgebraic slip model (ASM) so that accuratedispersion and entrainment of the different fractionsis found.Current work aims to further the understanding ofthe complex gas flows inside the tank, with a view toexamining just how well fan-driven gas freeingperforms. Steady-state simulations run to date showa difficulty in removing heavy gas vapour from apartition far from the main air jet.Another velocity field contour plot; note the size of the gasfreeingfan on the top to the dimensions of the tank.(Approximate size)Concentration field of gas PT3 (ethane)Future work is directed at examining the behaviourof the mixture of gases in the gas-freeing process;in particular, how the internal tank geometry affectsthe flow of air that entrains the noxious gases, witha view to optimising the process to decrease thetime to gas-free the tank.Kevin Chow Email: K.Chow@herts.ac.ukInternal Tank Geometry. The probe is pointing to one of theventing holes. (318mm diameter). Dimensions of the tank are45x17 base area, 31m high.Velocity field contour plot (0-1m/s)PHOENICS News Spring 2005 7

SPECIAL-PURPOSE SOFTW AREFOR SPECIAL -NEEDS CENTREPHOENICS On-Line users, Silcock Dawson andPartners, were contracted by Varndean College inBrighton, Sussex, UK, to evaluate the proposednatural ventilation systems for a new Special-NeedsCentre.The PHOENICS special-purpose building servicesmodule, FLAIR, was used to model the detailedarrangement of the ventilation openings throughoutthe development.The analysis helped the architect to specify the sizeand number of roof cowls and opening windows thatwould be required for adequate ventilationthroughout the development.It was also found that ventilation specified for theatrium would successfully control the temperature inthe occupied zone to less than 1.5°C above theambient temperature. Under light wind conditions,2m/s, the atrium will have an air change rate ofapproximately 20 with all windows and roofterminals open.Web: www.silcockdawson.co.ukG ET T ING INT O HOT W AT E R?Heatrae Sadia, the UK’s leading manufacturer ofhot water products, posed a straightforwardevaluation problem to several well-known CFDvendors. Given certain criteria, how long does ittake to raise water temperature to 45°C?It was necessary that the CFD model shouldprovide an indication of the temperature inside therooms relative to the external temperature as wellas predicting the airflow through the rooms.The case was, of course, transient involving acylindrical tank, complex internal geometry, withheat transfer. So we used a Cartesian mesh,together with the IMMERSOL radiation model andthe PARSOL partial solid feature – were we mad?In order to simplify the model and provide sufficientresolution inside the building an external model wasbuilt to predict the wind pressure at the buildingfacades, then further models of the rooms were builtto the necessary degree of detail. The windpressure data from the external model was thenused to allow the room models to predict the airflowrate through the windows.Velocity vectors coloured by temperature during tank heat upNot a problem for PHOENICS-3.6.0, whichproduced results nicely in line with experimentaldata, and reached a conclusion before codes usingalternative meshing techniques.www.heatraesadia.com8PHOENICS News Spring 2005

PORSCHE 911 GT 3 AIRFO IL MODELCHAM is working in collaboration with StaffordshireUniversity and James Watt Automotive on a project to redesignthe rear wing of a Porsche 911GT3 LM specificationendurance car.The LM endurance series is run at major tracks in Europesuch as Spa, Monza and Silverstone. The objective of theproject is to increase the available down force withoutcompromising drag.Contact David Cottrell - Email: dc@cham.co.uk) for furtherdetails about progress on this project.F 1 I N S C H O O L S P R O G R A M M EThe “F1 Virtual Wind Tunnel” sub-set of PHOENICS is now in widespreaduse by schools and colleges competing in the F1-in- Schools Challenge.The software is in use by over two hundred schools here in the UK, with anever-increasing user base worldwide.The first international final took place in October 2004. BETT2005,held at Olympia, London on January this year, hosted the finals ofthe UK Schools contest. The winning team from St John’s RomanCatholic High School in Dundee was presented with a new Mk3version of F1 VWT. This version incorporates the new rules andregulations associated with the new ‘R’ class model, as well asimproved post-processing graphical options.Mk3, which uses PHOENICS-3.6 as its basis,will updated once again during 2005, to includefurther changes needed for the rules andregulations introduced for the new ApprenticeClass outlined in the Jaguar F1 in SchoolsChallenge Pack.www.denford.co.uk/f1inschools.htmT I D AL P O W E R S T AT IO N T O S U R P AS ST HE R E S TThe University of Hertfordshire is performing an optimisationof an underwater “sail” concept using PHOENICS-based CFDmodelling for a new tidal power station; designed by TidalSails AS from Norway, which it is claimed, will be moreefficient than any existing schemes.The power station (shown in the conceptual figure) willconsist of large underwater sails that capture energy fromtidal currents and transfer it to electricity generators. Fluidmechanics will play an important role in the design of theconcept and a number of fundamental simulations will becarried out using PHOENICS.Arne Hōldo, Email: a.e.holdo@herts.ac.ukPicture courtesy of Tidal SailsPHOENICS News Spring 2005 9

KEEPING A SC HOOL COOLChildren at the new Ruislip High School to be built by theLondon Borough of Hillingdon are set to benefit from aninnovative low-energy solution to the problem of keepingclassrooms cool in summer.School elevation - architect Scott BrownrriggIn a typical classroom with 32 pupils, the heat gain frompeople, computers, lighting and sunshine can be as muchas 6.5 kW. The school is close to an elevated railway andto Northolt and Heathrow airports, and the high externalacoustic levels dictate that the windows have to remainclosed. An alternative solution for cooling is required -chillers would be too expensive in terms of carbon, and inorder to achieve a good BREEAM rating (a measure ofenvironmental impact and sustainability), consultantsScott Wilson decided to adopt the innovative approach of“passive slab pre-cooling”. The concrete soffit (ceiling)slabs are left exposed and are cooled during the night.They then act as a reservoir of cold through the day.At night, the upper pane of each window is opened toadmit fresh air, which cools the ceiling slabs and is thendrawn through acoustically insulated transfer grilles to thecorridor spaces by fans located in the upper part of thebuilding. In the daytime, the fans continue to draw airthrough the building; the windows are closed, and air isinstead admitted to the classrooms through acousticallyefficient ventilation units located beneath the windows.Scott Wilson commissioned Flowsolve Consultants tosimulate the air flow in a typical classroom, to assesswhether or not passive pre-cooling would be a viablesolution. Transient simulations with a one-hour time stepwere continued for seven days and nights, by which timethe temperatures settle into a periodic daily pattern. TheCFD model showed that provided the flow rate isquadrupled during the night, the reservoir of cold storedwithin the ceiling slabs achieves a reduction in peakdaytime classroom temperature of 6 o C for a typical day inearly summer.Without using chillers, the results satisfy the BuildingBulletin Guide requirement that classroom temperaturesshould not exceed 28 o C for more than 40 hours in a year.David Glynn, FlowsolveEmail: cfd@flowsolve.comJohn Gibson, Scott WilsonEmail: John.Gibson@scottwilson.comTemperatures on room cross-section - air cools as it flows alongthe ceiling from right to left, then fallsP HOENICS – O NLY A CL I CK AW AYThe PHOENICS On-Line service provides low-costinteractive access to both PHOENICS-3.5.1 andPHOENICS -3.6.0 via the Internet. The customer basehas increased quite dramatically during 2004,incorporating users from as far away as Chile and China– no distance at all for the Internet. We look forward tofurther expansion during 2005.The service remains particularly attractive to customerswishing to make infrequent or project-based use of thecode, and for those wishing to gain access from multiplelocations.Participants at UK training courses enjoy two months freeaccess to PHOENICS On-Line thereafter.Click on www.in2itive.biz/cham to try out the free-toaccessLook Learn Try facility, or email:sales@cham.co.uk to arrange an on-line demonstrationor a free trial evaluation.10 PHOENICS News Spring 2005

NEW S AND EVENT SBenelux User MeetingVenue: ARISTO EindhovenDate: 24 th May 2005Hosted By: CHAM / A2TEContact: Geert JanssenTel: +31 40 653 2569 33Email: gjanssen@a2te.nl.comUK User MeetingVenue: CHAM, LondonDate: 17 th May 2005Hosted By: CHAMContact: Peter SpaldingTel: +44 (0)20 8947 7651Fax: +44 (0)20 8879 3497Email: pls@cham.co.ukSIA International CongressVenue: SIA, LyonDate: 26 th – 27 th Oct 2005Hosted By: Société desIngénieurs de l’AutomobileContact: Marc CharletTel: +33 1 41 44 93 75Fax: +33 1 41 44 93 79Email: marc.charlet@sia.frDuring March 2005, DynamicsModelling Ltd showcasedPHOENICS in conjunction withWolter Fans (UK) at the ISHshow in Frankfurt, Germany.http://ish.messefrankfurt.com/frankfurt/en/home.htmlPHOENICS Training CoursesVenue /Dates:CHAM 12 to 14 th April 2005CHAM 14 th to 16 th June 2005CHAM 20 th to 22 nd Sept 2005CHAM 15 th to 17 th Nov 2005Contact Peter SpaldingTel: +44 (0)20 8947 7651Fax: +44 (0)20 8879 3497Email: sales@cham.co.ukN E W AG E N T SWe are pleased to welcomeseveral new agencies tostrengthen the worldwiderepresentation of PHOENICS.For ChinaCHAM BEIJINGRoom 301, 12#A Building42 Fucheng RoadBeijing 100036ChinaTel / Fax: +86 (0)10 8815 2519Email : cham@phoenics.cnContact: Mr Cong HuangFor Egypt:HYDRO CONSULT49 A El-Koba Station StreetCairo 11331EgyptTel / Fax: +202 257 66 19Email: elbaz@link.netContact: Dr Ahmed El-BazFor India:KLG SYSTEL LTD.3-6, Tower A, Unitech BusinessPark,F-Block, South City-1, Sector41,Gurgaon - 122001 (India)Tel: 91(0)124-5129900Fax: 91(0)124-5129999Email: navendu@klgsystel.comContact: Mr NavenduShrivastavaFor Italy:LASERTEC SRLPiazza Don Mapelli,1209099 Sesto San Giovanni(MI)ItalyTel: +39 2 24 86 11 08Fax: +39 2 26 22 44 40Email: l.vittori@lasertecsrl.Contact: Mr Lucio VittoriFor Spain & PortugalAERTIA SOFTWARE SLValencia 463 entlo 4Barcelona 08013SpainTel: +34 93 265 1320Fax: +34 93 265 2351Email: jmsole@aertia.comContact: Mr Juan M SoleFor Turkey:HHvESHidronerji ve Enerji Sistemleri,MuhendislikFevzi Cakmak 2Sokak 31/A, Kizilay, AnkaraTurkeyTel: +90 312 232 6803/04Fax: +90 312 232 6800Email: ytopcu@hidronerji.comContact: Mr Yavuz TopcuFor Ukraine:IETNational Academy of SciencesKievUkraineTel:Fax:Email: ksg@ittfnan.kiev.uaContact: Dr Sergiy G KobzarFor USA:DD&G50 Smith CrescentBoynton BeachFlorida 33435Tel: +1 (561) 714 8150Fax: +1 (561) 364 7360Email: parisp@bellsouth.netContact: Mr Anil SahayaPHOENICS News Spring 2005 11

CORPORATE ADDRESSESCHAM Limited40 High StreetWimbledon VillageLondon SW19 5AUUnited KingdomTel: +44 (0)20 8947 7651Fax:+44 (0)20 8879 3497Email:sales@cham.co.ukCHAM Japan406 Kojimachi Intelegent Bldg 4F3-5-4 KojimachiChiyoda-kuTokyo 102JapanTel: +81 35 21 09 356Fax: +81 35 21 09 359Email: customer@phoenics.co.jpCHAM RussiaScience Service Center (SSC)Moscow Power EngineeringInstituteKrasnokazamennaya Str. 14111250 MoscowRussiaTel: +7 095 362 7360Fax: +7 095 918 1469Email: algin@online.ruAGENT ADDRESSESAUSTRALIA - ACADS-BSGacadsbsg@ozemail.com.auBALKANS - Vinca Institute ofNuclear Sciencesxgrafon@eunet.yuBRAZIL - CHEMTECHchemtech@chemtech.com.brCHINA - CHAM Shanghaiphoenics@sh163.netCHINA – CHAM BeijingEGYPT - Hydro Consultelbaz@link.netFINLAND - GEM Systemsgem.systems@gemsystems.fiFRANCE - Arcofluidarcofluid@wanadoo.frGERMANY - a-CFDhw.mindt@a-cfd.deGREECE - Sybillasybilla@hol.grINDIA - C-DACvikask@cdacindia.comINDIA - KLG SYSTELnavendu@klgsystel.comITALY - Lasertecl.vittori@lasertecsrl.itJAPAN - CRC Solutionsa-suzuki@crc.co.jpKOREA - ACT2000dsyeom@act-e.co.krMALAYSIA - Cybron Technologydanalakshmi@cybron.co.myMEXICO - Vortex de Mexicovortexmx@prodigy.net.mxMIDDLE EAST - Locke Careylcfrc@emirates.net.aeNORWAY - LM FlowConsultterje.toften@larsmyhre.noSPAIN - Aertia Softwarejmsole@aertia.comTAIWAN - CHAMPIONsales@c-h-a-m-p-i-o-n.com.twTURKEY – HhvESytopcu@hidroner.comUK - S&C Thermofluidstony.smith@thermofluids.co.ukUKRAINE - IET, NASksg@ittfnan.kiev.uaUSA / CANADA - ACFDAEmail: acfda@sympatico.caUSA – DD&GEmail: parisp@bellsouth.netPictures courtesy ofCHEMTECH, BrazilDesigned and compiled by Peter SpaldingComments and articles for future publication may be sent to:CHAM Limited 40 High Street, Wimbledon Village, London SW195AUOr emailed to: pls@cham.co.uk