Session 13

Fluent Meshing: Mesh Verification & Export Procedures

This session covers the essential final steps in Fluent Meshing workflow: verifying mesh size, assessing element quality, and exporting for Fluent solver. These verification procedures ensure numerical stability and simulation accuracy.

Check Number of Cells
First evaluation step displays total cells, faces, and nodes. This metric confirms computational feasibility and mesh complexity relative to available hardware resources.

Check Quality Metrics
Critical quality assessment using industry-standard measures:

Orthogonal Quality: Measures element face orthogonality (ideal: 0.1-1.0)

Aspect Ratio: Evaluates element elongation (ideal: <10:1)

Skewness: Quantifies element deviation from ideal shape (ideal: <0.95)

Export Mesh
Final preparation saves mesh in Fluent-compatible formats:

.msh: Binary mesh file (most common)

.cas: Case file containing mesh + basic setup

Quality Thresholds for Production CFD:

text

Orthogonal Quality: >0.1 (good), >0.2 (excellent)
Skewness: <0.95 (acceptable), <0.8 (excellent)
Aspect Ratio: <20:1 (typical limit)

Verification confirms mesh readiness before solver execution, preventing convergence failures and ensuring reliable CFD results.