6.1. Preprocessing# Meshing Recommendations Introduction Surface Mesh Element Sizing Quality Metrics Volume Mesh Element Sizing Quality Metrics y+ Estimation Mesh format related considerations BET and AD Refinement Regions Modeling a Hub in BET/AD Simulations Automated Meshing Refinement Regions for BET/AD Simulations CGNS Mesh Format and Multizone Interface Connectivity Introduction Multizone Interface Connectivity Collaboration with Volume Models Interpretations in surfaceOutput STEP Format CAD Import for Automated Meshing Quick Example Common Issues Lofting Surfaces Boolean Operations Solid Body v.s. Sheet Body Notes BET Disk BET Translators C81 to Flow360 JSON XFOIL to Flow360.json XROTOR to Flow360.json DFDC to Flow360.json BET Sectional Polars ESP Tutorials ESP Tutorial for the ONERA M6 Wing 3D Sketches of Airfoils Wing Planform Wing Solid Model Adding Edge Attribute Adding Face and Group Attributes ESP Tutorial for a 2D Multi-element Airfoil Modeling Multi-element Configurations in ESP