Flow Simulation

Fathom models liquid (and low-velocity gas) piping and duct systems at steady state, calculating pressure drop and flow distribution across your network. It's the tool most engineers reach for first: sizing pipes, balancing flow, sizing pumps, and troubleshooting existing systems in industries like chemical processing, power generation, cooling systems, and general industrial design. If you want to model how fluid moves through your system under normal operating conditions, Fathom is your starting point.

Goal Seek automatically adjusts your input variables to hit the results you're after – no more manual trial-and-error. It handles single- and multi-variable adjustments in a fraction of the time.

Extended Transient lets you model how your system behaves over time, not just at steady state. Simulate pumps, valves, and tanks changing as your system runs, and answer questions like how long a tank takes to fill or drain.

Settling Slurries predicts how solids-carrying fluids move through your piping, so you can spot settling and plugging risks before they happen. Enter your particle properties, and Settling Slurries automatically calculates flow, pressure drop, and pump performance.

For customers operating in fully air-gapped networks (no outbound internet access), we also offer a Local License Server (LLS) option. LLS keeps licensing entirely on your network instead of connecting through Zentitle2's cloud service, but it requires additional setup and manual management of license files. Use LLS only if a cloud connection is not possible on your network. Otherwise, standard Zentitle2 licensing will serve you better.

Arrow is Fathom's counterpart for compressible fluids. It calculates steady-state pressure drop and flow distribution in piping carrying superheated compressible gases, accounting for real gas behavior, heat transfer, and choked flow. Models are used in power generation, emissions control, and gas processing systems. Choose Arrow when you're working with compressible flow rather than liquids and need accurate results.

Goal Seek automatically adjusts your input variables to hit the results you're after – no more manual trial-and-error. It handles single- and multi-variable adjustments in a fraction of the time.

Extended Transient lets you model how your system behaves over time, not just at steady state. Simulate compressors, valves, and tanks changing as your system runs, and answer questions like how long a tank takes to fill or drain.

For customers operating in fully air-gapped networks (no outbound internet access), we also offer a Local License Server (LLS) option. LLS keeps licensing entirely on your network instead of connecting through Zentitle2's cloud service, but it requires additional setup and manual management of license files. Use LLS only if a cloud connection is not possible on your network. Otherwise, standard Zentitle2 licensing will serve you better.

Impulse analyzes fast-moving pressure surges in liquid piping systems, commonly known as waterhammer. When a pump trips, a valve slams shut, or a system starts up, Impulse shows you the resulting pressure spikes so you can protect equipment and stay within design limits. Understanding waterhammer is critical for any system – including data centers, municipal water systems, and other pumping installations facing surge risk. Use Impulse when a liquid system's safety depends on what happens in the seconds after something changes, not just its steady-state behavior.

Pulsation identifies acoustic resonance frequencies that can cause vibration, fatigue failures, or downtime. Check reciprocating pump systems against API674 limits and get automatic warnings when a system is at risk.

Settling Slurries predicts how solids-carrying fluids move through your piping, so you can spot settling and plugging risks before they happen. Enter your particle properties, and Settling Slurries automatically calculates flow, pressure drop, and pump performance.

For customers operating in fully air-gapped networks (no outbound internet access), we also offer a Local License Server (LLS) option. LLS keeps licensing entirely on your network instead of connecting through Zentitle2's cloud service, but it requires additional setup and manual management of license files. Use LLS only if a cloud connection is not possible on your network. Otherwise, standard Zentitle2 licensing will serve you better.