1. CFD Oil Flow Study in Magna’s Pumpless System Approach II Update May 4, 2011

2. Approach I Assumptions Chain is modeled as a moving plate Chain is modeled as a moving plate Flow is modeled as internal flow in a duct Flow is modeled as internal flow in a duct - Model 1: Rectangular duct - Model 2: Includes geometric details - Model 2: Includes geometric details Duct is completely filled with oil Duct is completely filled with oil Flow is driven by the moving plate Flow is driven by the moving plate Flow is steady and incompressible Flow is steady and incompressible

3. Model 1 Geometry and Mesh L = 200 mm W = 48 mm 4.3 mm GeometryNodesElements Simple Geometry Model 356775336000

4. Model 1 Mesh

5. Flow Geometry

6. Model 2 Geometry and MeshGeometryNodesElements Detailed Geometry Model 988454931788

7. Velocity Profile on Outlet

8. Velocity profile on Outlet

9. Approach II Model Ch a in Oil deflector

10. Approach II  Use Detailed Geometry Model  Two-phase Flow (Oil - Air)  Transient Flow  With and Without Gravity (  =22, 27 deg.)   Model Oil Flow around Detailed Model of Chain   Model Different Chain Speeds 250 – 3000 rpm

11. Two-Phase Transient Flow in Simple Geometry

13. Two-Phase Transient Flow in Semi-detailed Geometry

15. Two-Phase Transient Flow in more-detailed Geometry

16. Next Steps   Model Oil Flow around Detailed Model of Chain   Model Different Chain Speeds 3000 rpm Approach III   Incorporate Chain Details instead of Plate   Incorporate Additional Geometric Details into the Model

17. Discussion