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AFT Impulse 4.0 (Portable)

AFT Impulse 4.0 (Portable): A Powerful Tool for Waterhammer and Surge Analysis

Waterhammer and surge are transient phenomena that occur when the flow of a fluid in a pipe network changes abruptly due to events such as valve closures, pump trips, or power failures. These phenomena can cause severe pressure fluctuations, pipe vibrations, and even pipe rupture, resulting in costly damages, operational disruptions, and safety hazards. Therefore, it is essential to model and analyze waterhammer and surge effects in order to design and operate pipe systems with greater reliability and safety.

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AFT Impulse 4.0 (Portable) is a software application that allows you to model fluid transients in pipe networks using the Method of Characteristics. It is a portable version of AFT Impulse, which is a visual platform for modeling fluid transients in pipe networks. AFT Impulse 4.0 (Portable) has the following features:

  • It does not require installation or activation, and can be run from any removable device such as a USB flash drive or an external hard drive.

  • It has a built-in steady-state solver that automatically initializes the waterhammer transient analysis.

  • It has a detailed pump inertial modeling feature that simulates pump trips and start-ups, including state-of-the-art four quadrant methods.

  • It has an extensive cavitation modeling feature that accounts for liquid column separation caused by transient cavitation and the subsequent pressure surges due to vapor cavity collapse.

  • It has a scenario manager feature that tracks all design variants and operational possibilities in a single model file with data linkage.

  • It has a comprehensive relief valve modeling feature that simulates various types of relief valves and their opening and closing characteristics.

  • It has an integrated graphing and reporting feature that allows you to visualize and compare the results of different scenarios and parameters.

  • It has an animation feature that dynamically graphs transients and creates video files from animations to share your results.

  • It has a force imbalance feature that generates force imbalance files that can be automatically read into CAESAR II and TRIFLEX pipe stress dynamic models.

  • It has a built-in intelligence feature that guides you in building better models and avoiding common errors.

AFT Impulse 4.0 (Portable) is designed for systems containing various fluids such as water, petroleum, chemicals, cryogens, and refrigerants. It can be used for various applications such as:

  • Ensuring pressure extremes are within design allowables

  • Sizing and locating surge suppression equipment

  • Determining imbalanced pipe forces and sizing structural supports

  • Troubleshooting existing systems to determine the cause of operational problems

  • Evaluating the effect of pressure surges due to vapor cavity collapse

AFT Impulse 4.0 (Portable) is compatible with Windows XP, Vista, 7, 8, and 10 operating systems. It requires a minimum of 256 MB RAM, 500 MB hard disk space, and a monitor capable of at least 800 x 600 resolution. It can be downloaded from [here].

AFT Impulse 4.0 (Portable) is a powerful tool for waterhammer and surge analysis that can help you design and operate your pipe systems with greater safety and reliability. It is easy to use, portable, and versatile. Try it today and see the difference!


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