The AFT Fathom Extended Time Simulation (XTS) Module is an essential add-on for AFT Fathom, designed to address complex design and operating simulation questions that require an understanding of how critical parameters evolve over time. This module extends the core modeling capabilities of Fathom into the time domain by performing a series of steady-state solutions, with variables automatically adjusting to achieve a dynamic simulation of the entire fluid system. It allows users to define a wide range of actions and events that occur during the simulation, providing insights into system behavior under various conditions. The module is capable of modeling diverse types of transients, including time transients (changes specified to occur based on model time), event transients (triggered by system events like pressure, flow, velocity, or liquid level), and inherent transients (changes occurring by the nature of a system component, such as liquid level changes in a finite reservoir or check valve operations due to flow reversals). Its comprehensive reporting features, including unique animation capabilities, provide clear visual and textual output of time-varying parameters, enhancing the analysis and understanding of system dynamics.

Features & Benefits

• Dynamic Simulation Capabilities
  • Extends AFT Fathom's modeling to the time domain, performing dynamic simulations by automatically varying parameters through a series of steady-state solutions.
• Configurable Time-Based Actions
  • Allows users to define a wide range of actions to occur during the time simulation.
  • Tank volume and liquid level tracking (predicting fill/drain times)
  • Pump start/stop and speed variation
  • Valve position changes
  • Control valve setpoint variation
• Comprehensive Transient Modeling
  • Models various types of transients for in-depth system analysis.
• Time Transients:
  • Changes specified to occur based on the model time.
• Event Transients:
  • Triggered by system events such as pressure, flow, velocity, or liquid level.
• Inherent Transients:
  • Changes occurring by the very nature of a system component (e.g., liquid level in tanks, check valve opening/closing due to flow reversals).
• Advanced Reporting & Visualization
  • Provides clear textual and graphical output of time-varying parameters, along with a unique animation feature.
  • Liquid height in tanks
  • Flow and pressure in pipes
  • Pump operating conditions
  • Valve position
  • Dynamic display of time-varying parameters along selected flow paths via animation.