Which thermodynamic method does it use?

The PENG-ROBINSON property package, over methane — already selected. You can switch the method on the canvas before running.

Which unit operations are in the flowsheet?

It chains PIPE. Every block is a real, solvable unit operation you can reconfigure, add to, or remove.

Do I need to install software or buy a license?

No. Distributed pipeline cool-down (indexed equation model) runs entirely in your browser on MaximaLabs — free, no install, no license. Open the model to load it live and run the deterministic solver.

All guides

How to simulate distributed pipeline cool-down (indexed equation model)

A hot gas cools along a buried pipeline — modeled as a custom unit op whose internals are a distributed 1-D indexed equation system, the gPROMS-style array + indexed-equation modeling capability solved by the sandboxed equation engine. Twenty axial segments compute the full temperature profile T[0..20] (the inlet drives the boundary T[0]; each segment loses heat toward the ground temperature); the outlet temperature is the end of that profile. Demonstrates writing a distributed model as one indexed template rather than 20 hand-written equations.

FEED

PIPE

OUT

1
Open the ready-made model
Open the "Distributed pipeline cool-down (indexed equation model)" model in the MaximaLabs workspace — no install, no license. It loads live on the canvas, ready to edit and run.
2
Confirm the thermodynamics
This process is modeled with the PENG-ROBINSON property package over methane — already selected, so the phase equilibrium and enthalpy are physically consistent from the first run.
3
Review the flowsheet
The flowsheet chains PIPE. Every block is a real, solvable unit op you can reconfigure on the canvas.
4
Run the simulation
Click Run. The deterministic solver converges the material and energy balances (recycles included) and fills the live stream table — the AI never invents a number.
5
Read the results and iterate
Inspect the converged streams, tweak a spec, and re-run — or ask the AI copilot to explain a result or diagnose a failed solve in plain English.

What you'll build

Thermodynamics: PENG-ROBINSON
Components: methane
Unit operations: PIPE

Open this model in the workspace

Opens live on the canvas — free, no install.

Explore the model & flowsheet

Frequently asked questions

What does the Distributed pipeline cool-down (indexed equation model) model simulate?: A hot gas cools along a buried pipeline — modeled as a custom unit op whose internals are a distributed 1-D indexed equation system, the gPROMS-style array + indexed-equation modeling capability solved by the sandboxed equation engine. Twenty axial segments compute the full temperature profile T[0..20] (the inlet drives the boundary T[0]; each segment loses heat toward the ground temperature); the outlet temperature is the end of that profile. Demonstrates writing a distributed model as one indexed template rather than 20 hand-written equations.
Which thermodynamic method does it use?: The PENG-ROBINSON property package, over methane — already selected. You can switch the method on the canvas before running.
Which unit operations are in the flowsheet?: It chains PIPE. Every block is a real, solvable unit operation you can reconfigure, add to, or remove.
Do I need to install software or buy a license?: No. Distributed pipeline cool-down (indexed equation model) runs entirely in your browser on MaximaLabs — free, no install, no license. Open the model to load it live and run the deterministic solver.

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