1. GWU BME Fellowship Flow Over the Human Hand Mentor: Dr. Rajat Mittal Presenter: Ryan Kelly

2. Computational Fluid Dynamics  Computer Simulation of Physical Flow  Our Case: Iterative Solution of the Navier-Stokes Equations No closed form solution Requires Iterative Solution

3. Hand Model: 4 Positions

4. Meshed Model CFD Grid I  Non-uniform cartesian grid  Concentrated resolution on the fingers 120x100x100=1.2 million units  Finer resolution -> better results

5. Meshed Model and CFD Grid II

6. Current Results  Technical Issues Resolved System finally debugged Some initial qualitative results have been obtained  Pressure Distributions, Streamtraces (streamlines) are of greatest significance at this time Quantitative results forthcoming, require further analysis

7. Pressure Distribution: Position 1

12. Streamtraces

13. The Future  Simulate Established Flow  Extract pressure, viscosity, vorticity measurements  Compute drag on the hand for each position  Publish (?)