Free Download AFT xStream 3.0.1106 | 180.6 Mb
AFT xStream is a powerful fluid dynamic simulation tool for high-speed, acoustic transients that occur in steam and gas piping systems. Uncertainty in design and operations costs money and time. Now you can accurately simulate how your steam and gas systems will respond to potentially disruptive transient events.

Simulate and Solve Your Challenging Steam and Gas Transient Problems
Accurately simulate high-speed transients in steam and gas piping systems including choked flow conditions
Evaluate overall system response and transient pipe forces after steam and gas turbine trips
Predict transient supply pressures, temperatures and flows to operating gas compressors and turbines when one trips offline
Simulate tank blowdowns and charging, and how long it takes to reach desired pressures
Predict transient pressures and flows due to heat exchanger tube ruptures
Easily change system input data including transient valve positions, compressor operation, control set points, pressures, temperatures and more
Initiate transients based on time or events in the system
How does it work?
AFT xStream™ incorporates a highly accurate steady-state solver which provides seamless transfer of initial conditions to the transient analysis. Steady-state solutions are determined using a modified Newton-Raphson matrix iteration plus proprietary methods developed by AFT. A specialized Method of Characteristics is used to solve the transient mass, momentum and energy equations of pipe flow.
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
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