Meridian wiki

What Meridian is

Meridian is a parametric CAD program for the desktop. It runs on Linux and on Windows.

With Meridian, you can:

Make 2D sketches and 3D parts.
Put parts together in assemblies.
Make 2D drawings of parts and assemblies.
Calculate stress, vibration, buckling and heat in parts (structural simulation).
Calculate the flow of air or liquid around or through parts (fluid simulation, Beta).
Control the model with parameters and rules.
Use Meridian from a command line or from an AI agent.

Meridian is in beta. Each release is a beta release. The About window and the start page show a "Beta" badge.

Page	What it gives
Getting started	Install Meridian and make your first part.
Account and licence	The subscription, the trial, downloads, computers and the licence lease.
The interface	The start page, the ribbon, the model browser and the preferences.

Page	What it gives
Sketching	Sketch tools, constraints and dimensions.
Part features	Extrude, revolve, holes, fillets, patterns and other features.
Assemblies	Components, mates, exploded views and the bill of materials.
Drawings	Sheets, views, dimensions and output to PDF and DXF.

Page	What it gives
Structural simulation	Static, modal, buckling, thermal, harmonic and transient studies.
Fluid simulation	Flow studies, aerodynamics and the wind tunnel view.
GPU compute	Use the graphics processor for the flow solver.
Validation	How Meridian checks its solvers, and the known limits.

Page	What it gives
Parameters and rules	Expressions, user parameters and Meridian Rules.
Command line	The `meridian` command and its subcommands.
MCP server for AI agents	Let an AI agent read and change your models.

Page	What it gives
File formats	The Meridian file types and the exchange formats.
Troubleshooting	Messages, causes and corrective actions.
FAQ	Short answers to frequent questions.

Use the Report an issue button. The button is in the footer of the website. In the desktop app, select Help > Report an Issue.