GWU BME Fellowship Flow Over the Human Hand

GWU BME FellowshipFlow Over the Human Hand

Mentor: Dr. Rajat MittalPresenter: Ryan Kelly

Computational Fluid Dynamics

Computer Simulation of Physical Flow

Our Case: Iterative Solution of the Navier-Stokes Equations No closed form solution Requires Iterative Solution

Hand Model: 4 Positions

Meshed Model CFD Grid I

Non-uniform cartesian grid

Concentrated resolution on the fingers 120x100x100=1.2

million units Finer resolution ->

better results

Meshed Model and CFD Grid II

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

Pressure Distribution: Position 1

Pressure Distribution: Position 1

Pressure Distribution: Position 1

Pressure Distribution: Position 1

Pressure Distribution: Position 1

Streamtraces

The Future

Simulate Established Flow Extract pressure, viscosity, vorticity

measurements Compute drag on the hand for each

position Publish (?)