Wrong Lift and drag ansys | Cessna 172 | External Flow | Ansys 2026 R1| #cfd

In this tutorial, we cover the full CFD workflow from scratch: importing CAD geometry, scaling and domain enclosure setup in SpaceClaim, extracting the true wing planform reference area, setting up boundary layer inflation meshing, configuring the SST k-omega turbulence model, and post-processing 3D pressure and velocity contours. Timestamps 0:00 - Introduction & Workflow Overview 0:25 - CAD Import & SpaceClaim Geometry Inspection 1:15 - Measuring Fuselage Length & Correct Full-Scale Scaling 2:10 - Measuring Wing Planform Area (S ref) in SpaceClaim 2:50 - Creating the Aerodynamic Enclosure (Domain Sizing) 3:35 - Ansys Meshing: Named Selections & Boundary Layer Inflation 4:15 - Fluent Physics Setup: Velocity Inlet & SST k-ω Model 4:45 - Reference Values: Inputting Projected Planform Area 5:10 - Defining Lift (C L) & Drag (C D) Report Definitions 5:35 - Solver Execution & Residual Convergence 6:00 - 3D Surface Pressure & Velocity Vector Contours 6:25 - Final Aerodynamic Results Summary (C L,C D, L/D Ratio)