Hopp til første side 3D Flow Simulation By Sigve Hovda, Ph.D student Three Dimentional...
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![Page 1: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/1.jpg)
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3D Flow SimulationBy Sigve Hovda, Ph.D student
Three Dimentional Computational Fluid Dynamic Model of the Human Heart
During Ejection based on Ultrasound Measurements
![Page 2: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/2.jpg)
![Page 3: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/3.jpg)
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Spline Representation Spline representation of the first and last volume Interpolation in time between these volumes Animation of the mesh
![Page 4: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/4.jpg)
![Page 5: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/5.jpg)
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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
![Page 6: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/6.jpg)
![Page 7: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/7.jpg)
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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
![Page 8: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/8.jpg)
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Results Pressure Velocity (absolute value)
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![Page 10: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/10.jpg)
![Page 11: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/11.jpg)
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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
![Page 12: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/12.jpg)
![Page 13: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/13.jpg)
![Page 14: 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.](https://reader036.fdocuments.in/reader036/viewer/2022062404/551a6f0b550346b52d8b4e81/html5/thumbnails/14.jpg)
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Future Investigation Better wall describtion Better initial conditions Combining ultrasound colorflow data with the CFD
model Using Inverse Boundary Methods