blockMeshDict Generator

Define a controlled single-block domain, inspect its topology and download a complete system/blockMeshDict. Nothing is uploaded.

Open Advanced Visual Editor →

Define the mesh

Scope: this first release supports one structured hexahedral block. Use a CAD or multi-block workflow for curved, branched or obstacle-containing geometry.

Geometry template OpenFOAM version label Length X / axial (m) Height Y / radius (m) Width Z (m) Cells in X / axial direction Cells in Y / radial direction Cells in Z Grading X Grading Y / radial Grading Z

Patch names and types

Inlet nameInlet typeOutlet nameOutlet typeWall group nameWall group type

Backward-facing step

Step location X (m)Step height (m)

Pipe / annulus

Inner radius (m; 0 = pipe)Wedge angle (degrees)

Converging–diverging nozzle

Throat location X (m)Throat radius (m)Outlet radius (m)Wedge angle (degrees)

Floor-mounted obstacle

Obstacle start X (m)Obstacle width (m)Obstacle height (m)

Enter the dimensions and mesh resolution.

GENERATED FILE

system/blockMeshDict

Run and verify

blockMeshcheckMesh -allTopology -allGeometry

Then inspect patch names, face orientation, cell sizes, grading direction, non-orthogonality and mesh bounds before connecting field boundary conditions.