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Published byMelissa Ruck Modified over 2 years ago

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Hopp til første side 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

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Hopp til første side Spline Representation n Spline representation of the first and last volume n Interpolation in time between these volumes n Animation of the mesh

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Hopp til første side The mesh n Adaptable n The volume is divided into 6 major blocks n 210 000 elements which decrease in size as they get closer to the wall

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Hopp til første side The CFD simulation n Using a parallel computer, Cray 3E, with 64 processors n Solving the Navier Stokes Equations assuming blood is a Newtonian fluid n Reynolds number of 2500

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Hopp til første side Results n Pressure n Velocity (absolute value)

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Hopp til første side Compare with Ultrasound n Ultrasound colorflow image - Velocity component in the beam direction - Color codes these components - Spatial and temporal filtering n Simulation - Calculates these velocity components - Same colorcodes n Speed 5% of realtime

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Hopp til første side Future Investigation n Better wall describtion n Better initial conditions n Combining ultrasound colorflow data with the CFD model n Using Inverse Boundary Methods

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