Primary Features of AFT xStream™

Built-in steady-state solver to automatically initialize system before the transient
Automatic pipe sectioning based on steady-state acoustic velocities
Compound transient event logic to model complex control sequences
Scenario Manager to track all design variants and operational possibilities in a single model file
Integrated graphing and reporting
Animation tools for visual interpretation of complex transient interactions
Generates force imbalance files that can be automatically read into CAESAR II ®, ROHR2, AutoPIPE and TRIFLEX ® pipe stress dynamic models
2D flow diagram or isometric view interface
Built-in libraries of fluids (including NIST REFPROP and ASME Steam Tables) and fittings which can be extended and customized
Chempak™ add-on utility provides a thermophysical database of almost 600 gases - allows you to define non-reacting pre-mixtures and simulate dynamic flow mixing

Designed for fluid systems containing:

Organize your design variants, operating conditions, existing infrastructure and expansions into a single file with Scenario Manager
Batch run operating scenarios and export your results to Excel
Easily compare design variant input to isolate changes between systems
Quickly review model input from a schematic
Compare transient response in different operating scenarios on a single graph

Customize and organize parameters to isolate relevant information
Report in multiple units, which can be updated without re-running your model
Filter your results to identify areas of concern
Export or copy results to Excel for further analysis
Use design alerts to quickly identify parameters outside of allowable tolerances
Report parameters section by section in your model

Save time with report-ready graphs
Manage graph items and templates to re-use and compare different system set-ups
Graph or animate parameters along a pipe length to see pressure and flow transmission
Graph multiple parameters over time to understand system cause-and-effect
Integrate flowrates to measure total flow over time
Visually associate parameter results with locations in the system
Color code your system to reflect parameter result range
Color animate pipes in your system to see transient behavior in context

Select pipe materials, sizes, type and schedule from built-in or custom databases
Use built-in handbook data and heuristics for common component losses, embedded into pipes for visual simplicity
Collect and catalogue common component and pipes into custom libraries
Reduce redundant specification by importing your model file
Draw your model as an isometric or on top of an aerial photography background
Quickly make changes to common pipes and components with Global Edit

Model component losses with Cv, K, Kv, or resistance curves
Take control over your flow and pressure with control valves, determining valve position, capacity, and failure response
Utilize reactionary components like check valves, relief valves, and vacuum breaker valves to confirm your system response
Model relief valve protection, both internal or venting to atmosphere
Display effective Cv and K factor values for all valves in the system

Use built-in fluid databases or create your own to calculate properties
Mix it up with fluid mixures in NIST REFPROP or the add-on Chempak database
Refine your real gas modeling with equations of state (Redlich-Kwong, Three Parameter, Ideal Gas, Interpolation)
Account for changes in composition, density, and viscosity with pipe specific fluid properties

Utilize reactionary components like check valves, relief valves, and vacuum breaker valves to confirm your system response
Model where your system sonically chokes and determine the resulting losses

Induce a transient response through a valve change, pressure change, pump changes and more!
Use event logic to model interacting components in control systems
Calculate and export forces for pipe stress analysis
Size, locate, and test surge supression equipment like accumulators, relief valves, and vacuum breaker valves
Consider variable friction modeling with large flow rate changes
Use valve characteristic curves to capture specific valve response
Use pulsation analysis to determine and analyze excitable frequencies (with add-on module)

Software comes with 1-year of free
Support, Upgrades & Maintenance

Ensure your software works
properly with your system

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