Enclosures and housings
100 mm 5-Blade Axial Fan Rotor (Smooth Baseline)
- Bounding box
- 98.8 × 103.7 × 22.3 mm
- Engine
- Precision B-rep
- Parameters
- 12
- Published
- November 9, 2026
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The prompt
**100 mm Axial Exhaust Fan – Smooth Baseline Rotor** Create a complete 3D CAD model of a five-blade axial exhaust fan rotor for an engineering thesis. **Dimensions and specifications:** - Outer diameter: 100 mm - Number of blades: 5, evenly spaced at 72° - Hub diameter: 30 mm - Hub height: 15 mm - Shaft bore: 8 mm - Blade radial span: 35 mm - Airfoil profile: NACA 4412 - Blade chord: 28 mm at root, tapering to 20 mm at tip - Approximate blade setting angle: 40° at root and 25° at tip, measured relative to the plane of rotation - Maximum blade thickness: approximately 2 mm, subject to the NACA 4412 profile geometry. **Blade design:** Create smoothly curved, cambered, tapered, and twisted blades connected to the central hub. Maintain consistent geometry and proportions. **CAD optimization:** - No riblets, grooves, or surface textures. - Use clean, continuous CAD surfaces. - Minimize unnecessary edges, faces, and separate bodies. - Avoid decorative details, excessive fillets, and small features. - Ensure a watertight, manifold solid without gaps, overlaps, or self-intersections. - Keep the geometry lightweight and suitable for AutoCAD and ANSYS Fluent. - Do not generate an excessively dense triangular mesh. This is the smooth baseline model. Preserve its geometry for comparison with the riblet-modified rotor.
Parameters
| Name | Value | Range |
|---|---|---|
| Outer Diameter | 100 mm | 40 – 300 |
| Hub Diameter | 30 mm | 12 – 120 |
| Hub Height | 15 mm | 4 – 60 |
| Shaft Bore Diameter | 8 mm | 2 – 30 |
| Number of Blades | 5 pcs | 2 – 12 |
| Root Chord | 28 mm | 8 – 60 |
| Tip Chord | 20 mm | 6 – 60 |
| Root Setting Angle | 40 deg | 5 – 80 |
| Tip Setting Angle | 25 deg | 5 – 80 |
| Max Blade Thickness | 2 mm | 0.6 – 8 |
| NACA Camber (m) | 0.04 - | 0 – 0.09 |
| NACA Camber Position (p) | 0.4 - | 0.2 – 0.7 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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