گروه خدمات فنی مهندسی رهگشافن

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 youdesign 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 todesign 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.

more info @http://www.aft.com/products/impulse/