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3D Heart Ejection Flow Simulation from Ultrasound Measurements

Ph.D. student research on 3D computational fluid dynamics modeling of human heart ejection based on ultrasound measurements, using spline representation and parallel computing for accurate results. Explore results, comparison with ultrasound, and future improvements.

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3D Heart Ejection Flow Simulation from Ultrasound Measurements

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  1. 3D Flow Simulation By Sigve Hovda, Ph.D student Three Dimentional Computational Fluid Dynamic Model of the Human Heart During Ejection based on Ultrasound Measurements

  2. Spline Representation • Spline representation of the first and last volume • Interpolation in time between these volumes • Animation of the mesh

  3. The mesh • Adaptable • The volume is divided into 6 major blocks • 210 000 elements which decrease in size as they get closer to the wall

  4. The CFD simulation • Using a parallel computer, Cray 3E, with 64 processors • Solving the Navier Stokes Equations assuming blood is a Newtonian fluid • Reynolds number of 2500

  5. Results • Pressure • Velocity (absolute value)

  6. Compare with Ultrasound • Ultrasound colorflow image- Velocity component in the beam direction- Color codes these components- Spatial and temporal filtering • Simulation- Calculates these velocity components- Same colorcodes • Speed 5% of realtime

  7. Future Investigation • Better wall describtion • Better initial conditions • Combining ultrasound colorflow data with the CFD model • Using Inverse Boundary Methods

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