UNSTEADY FLOW IN A 3D CENTRALLY-ACTUATED TYPE ARTIFICIAL HEART

X. L. Yang, Y. Liu () and J. M. Yang
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X. L. Yang: Department of Modern Mechanics, University of Science and Technology of China, Hefei, 230027, China;
Y. Liu: Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
J. M. Yang: Department of Modern Mechanics, University of Science and Technology of China, Hefei, 230027, China

International Journal of Modern Physics C (IJMPC), 2007, vol. 18, issue 05, 783-793

Abstract: The unsteady flow within a simplified 3D centrally-actuated type artificial heart was investigated numerically using moving boundary technique. The velocities on the inlet and outlet were determined according to the motion of the diaphragm. The case with heart beat rate of 75 beats per minute (bpm) was simulated. Two models were studied. It is found that, in the diastolic cycle, a vortex ring forms in the conjunction of the blood chamber and the inlet tube. This vortex ring can provide good wash-out on the wall.

Keywords: Centrally-actuated artificial heart; three-dimensional; moving boundary; 11.25.Hf; 123.1K (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0129183107010553

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