Indian Journal of Science and Technology
DOI: 10.17485/ijst/2014/v7i12.31
Year: 2014, Volume: 7, Issue: 12, Pages: 2020–2032
Original Article
H. Girija Bai1 , K. B. Naidu2 and G. Vasanth Kumar3
1 Research Scholar, Sathyabama University, Chennai-600 119, Tamil Nadu, India; girijanameprakash@gmail.com
2 Department of Mathematics, Sathyabama University, Chennai-600 119, Tamil Nadu, India; kbnaidu999@gmail.com 3Department of Aeronautical Engineering, Sathyabama University, Chennai-600 119, Tamil Nadu, India; vassa.aero@gmail.com
In the present study, Aortic Aneurysms (AA) are investigated using Computational Fluid Dynamics (CFD) softwares Fluent and Gambit. A computational model of AA is developed from computed tomography (CT) scans using MIMICS software. Hemodynamic factors such as velocity magnitude, dynamic pressure, wall shear stress, wall strain, streamline patterns for unsteady flow conditions are discussed in detail. Contours and streamline patterns show how the flow is affected by different input pressure (p = 90.0074 mmHg, 150.0123 mmHg, 180.0148mmHg) and velocity (v = –0.4 m/s, –0.6 m/s, –1.5 m/s) conditions. The interruption of blood flow is visible through high pressure and low velocities in the region of aneurysms. These techniques based on computer flow study are important for understanding the relationship between hemodynamic parameters and risk of rupture. Quantification and decision of multiple aneurysms serve as the root for surgical intervention.
Keywords: Aortic Aneurysms, Computational Fluid Dynamics, Contours, Hemodynamic, Mimics, Streamlines
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