Reduce installed cost, increase operatingefficiency and do it in less time. Today’sdemands on the systems engineer leave the

traditional methods of compressible flow analysislacking. Simplifying assumptions and approximationsdo not yield answers with sufficient precision toassure an efficient and reliable system. The days ofcompromise are over. With an efficient, intuitiveinterface providing access to a powerful compressibleflow solver, AFT Arrow™ provides the systemsengineer the capability to model real gasesundergoing real processes. Along with its equipmentsimulation capabilities and extensive output reports,AFT Arrow is ideally qualified for modeling realcompressible flow systems including steam,compressed air, chemical and petrochemical processgases, natural gas transport and many more.

Wide Range of ApplicationsWhether your system is a single flow path or complexnetwork, open or closed loop, AFT Arrow handles it all.With a library of system components from fittings tocompressors to control and relief valves availablewithin its drag-and-drop interface, you’ll be buildingmodels of your compressible flow system insurprisingly little time. AFT Arrow’s capabilities let youconfidently develop a new system design, analyze anexisting system for modifications or explore theoperating envelope. AFT Arrow’s powerful compressibleflow solver is unique in its ability to analyze systemswith heat transfer and high velocities, including sonicchoking, providing the piping systems engineer anamazingly broad range of applications.

Optional add-on modules further expand your systemmodeling capabilities to include automatic, multi-variable goal seeking and extended control simulationand system costing. The optional Chempak™ thermo-physical property database makes available 600 gasesand allows the user to define non-reacting pre-mixturesand simulate dynamic flow mixing within the model.

AFT Arrow’s broad range of capabilities meet the needs of design and operational simulation for systemsranging from industrial to pipeline to infrastructure and in just about any industry. When you’re ready tomove up to the leading edge in design and simulationtools for gas flow systems, AFT Arrow 4.0 is thepreferred choice.

World Class Solution & Interface TechnologyAFT Arrow’s powerful solution engine simultaneously solves the five fundamen-tal equations of flow; mass, momentum, energy, state and Mach number. Usersmay select ideal or real gases, and between isothermal, adiabatic or generalizedheat transfer conditions. An intelligent solver sets a new standard in solverrobustness and speed by dynamically selecting the optimum calculation methodbased on the solution progress. This analytical power is readily accessiblethrough an interface that assures a short learning curve and high productivity.Models are assembled graphically in a familiar schematic format complimentedby extensive, user configurable output reporting. Scenario Manager raises thewhat-if potential of system modeling to a new level. Multiple system configura-tions varying by any modeling parameter are easily managed within a singlemodel file with a familiar hierarchical interface. Changes in the base configura-tion are automatically inherited by its descendants.

Compressible Pipe & Duct Flow Modeling

Verifiable Performancewith the Support You NeedBuilding on the confidence ofthe thousands of applications ofits predecessors, AFT Arrow 4.0brings a new level of capabilitiesand ease of use to compressibleflow analysis. AFT Arrow’s lead-ing edge flow analysis is backedby technical support providedby a team of customer orientedengineers with real world expe-rience who understand yourprojects. More than softwaresupport, AFT provides the pipeflow analysis knowledge thatcomes with extensive engineer-ing experience.

New In Version 4.0■ Optional add-on modules:

GSC – goal seek & controlautomates determination ofinput to achieve specified out-put & simulate controlfunctions.

CST – tie system componentand piping costs to yourmodel

■ Compressor / fan energy costanalysis, head curve modeling(in addition to pressure rise)and fixed head option

■ View input and output data formultiple scenarios simultane-ously

■ Modify selected input viaExcel™ spreadsheet transfer

Applications

Pipe SizingWith real gas modeling undergeneralized heat transfer condi-tions, AFT Arrow provides theprecision you need to accuratelysize pipelines. The comprehen-sive output details thecontribution of individual linelosses to the overall system.Visual Report’s color coding byselected criteria clearly illus-trates individual lines in thecontext of the entire system.

System OperationA system’s operating envelopecan be fully explored by quicklyand easily varying systemparameters and configuration.Change the number of compres-sors in operation, compressorspeed, control valve settings,valve positions, fluid properties,virtually any modeling parame-ter. An AFT Arrow modelprovides a realistic and accuraterepresentation of your system’scharacteristics allowing testingunder a wide variety of condi-tions long before committing tohardware.

Choked FlowSolution capabilities includesonic choking allowing designand analysis of critical flow con-ditions including flare and reliefsystems.

Mixing ProcessesWith the optional Chempak add-on, pre-defined gas mixturescan be modeled at any point inthe system. Mixtures from inter-secting flow streams of differinggases are automatically com-bined in accordance with theflow solution.

Compressor/Fan SelectionWith compressor and fan model-ing capabilities including flowvs. pressure, heat of compres-sion, variable speed, controlleddischarge pressure and multipleunit series and parallel opera-tion, AFT Arrow facilitatesinvestigating compressor andsystem interaction over the fullrange of operation.

Control Valve SelectionWith comprehensive output andease of changing componentspecifications, determining con-trol valve capacity and insuringadequate pressure drop isgreatly facilitated. Simulatingpressure, flow control and reliefvalves, operation can be testedover the system operating enve-lope.

System Requirements■ Windows 95 and higher or

Windows NT or higher

■ 128 MB RAM minimum

■ 800 x 600 display minimum

■ Stand-alone or network

For more information contact:Applied Flow Technology400 W. Highway 24, Suite 201P.O. Box 6358Woodland Park, CO 80866-6358USA

Phone: 800-589-4943 / 719-686-1000

Fax: 719-686-1001E-mail: sales@aft.comwebsite: www. aft.com

AFT Arrow 4.0

“AFT Arrow”, “Applied Flow Technology”, and the AFT logo are trademarks of Applied Flow Technology Corporation.“Chempak” is a trademark of Madison Technical Software Inc.