Gallery of Boulder Examples

This section contains examples demonstrating how to use Boulder to set up and run chemical reactor network simulations.

Quick start

From Python (as in run.py):

import uvicorn
if __name__ == "__main__":
    uvicorn.run("boulder.api.main:app", host="0.0.0.0", port=8050, reload=True)

From the CLI:

boulder                 # launches the server & opens the interface
boulder some_file.yaml  # launches the server preloading a YAML config

Each example provides a complete working demonstration with explanations and results, showing different aspects of reactor modeling and simulation with Boulder.

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Launch Boulder from the CLI.

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Launch Boulder from Python.

Set up the reactor network

Mixing two streams.

Report converged reactor states

Staged solve from YAML — medium-level API.

Boulder context

Mixing two streams example — Boulder conversion.

Workflow

Staged solve with progressive network visualization.

1. Define the Monolith reactor builder

Extending Boulder with a custom reactor plugin.