Waterhammer analysis tools of the past have been
noted for being difficult to use and requiring
extensive specialized knowledge. As a result, this
critical aspect of piping system design and
operation has often been overlooked. But no longer.
Now AFT Impulse? offers the ease-of-use of a
drag-and-drop interface and built-in waterhammer
modeling expertise. AFT Impulse helps you design and
operate your systems with greater reliability and
safety by avoiding the potentially catastrophic
effects of waterhammer and other undesirable system
transients.

Piping systems engineers typically do not have the
time to become specialists in waterhammer modeling.
Now they don't have to. Now they can be equipped
with the proper tools to design and analyze for
waterhammer transients in liquid systems containing
water, petroleum and chemical products, cryogens,
refrigerants and more. Waterhammer specialists will
find a no compromise tool capable of modeling a
broad range of waterhammer events, including
transient cavitation and various surge suppression
devices. AFT Impulse provides a built-in library of
fluids and fittings, variable model configurations,
pump and control valve modeling and much more.
Scenario Manager raises the what-if potential of
waterhammer modeling to a new level. Multiple system
configurations varying by any modeling parameter are
easily managed within a single model file with a
familiar hierarchical interface. Changes in the base
model are automatically inherited by alternate
design cases.

AFT Impulse incorporates a steady-state solver
providing seamless transfer of initial conditions to
the transient analysis. The traditional Method of
Characteristics are employed to solve the transient
mass and momentum equations of pipe flow. Modeling
vapor cavitation and liquid column separation, the
effect of pressure surges due to vapor cavity
collapse may be evaluated. Modeling tools for a wide
range of system components and surge devices are
included. Transients can be initiated based on time
or on events in the system. For example, a valve
closure transient may be initiated when a specified
pressure level is attained at a location. In
addition to time varying fluid dynamics, AFT Impulse
can calculate transient hydraulic forces on piping
for use in calculating pipe stresses and even
generate a CAESAR II force file for direct
importation to this popular pipe stress analysis
tool.

From the powerful drag-and-drop model building
features to the fully customizable output, AFT
Impulse is a powerful tool ready to tackle your most
demanding design problems, and with the release of
version 4.0, AFT Impulse further expands you ability
to analyze and design your piping systems
dynamically.

http://www.aft.com/products/impulse/

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