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Computational Hemodynamics Involving Artificial DevicesThis paper reports the progress being made towards developing complete blood flow simulation capability in human, especially, in the presence of artificial devices such as valves and ventricular assist devices. Devices modeling poses unique challenges different from computing the blood flow in natural hearts and arteries. There are many elements needed such as flow solvers, geometry modeling including flexible walls, moving boundary procedures and physiological characterization of blood. As a first step, computational technology developed for aerospace applications was extended in the recent past to the analysis and development of mechanical devices. The blood flow in these devices is practically incompressible and Newtonian, and thus various incompressible Navier-Stokes solution procedures can be selected depending on the choice of formulations, variables and numerical schemes. Two primitive variable formulations used are discussed as well as the overset grid approach to handle complex moving geometry. This procedure has been applied to several artificial devices. Among these, recent progress made in developing DeBakey axial flow blood pump will be presented from computational point of view. Computational and clinical issues will be discussed in detail as well as additional work needed.
Document ID
20010106926
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Kwak, Dochan
(NASA Ames Research Center Moffett Field, CA United States)
Kiris, Cetin
(NASA Ames Research Center Moffett Field, CA United States)
Feiereisen, William
Date Acquired
August 20, 2013
Publication Date
January 1, 2001
Subject Category
Aerospace Medicine
Meeting Information
Meeting: 6th International Congress on Computational Mechanics
Location: Dearborn, MI
Country: United States
Start Date: August 1, 2001
End Date: August 4, 2001
Funding Number(s)
PROJECT: RTOP 725-10-51
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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