000015977 001__ 15977
000015977 005__ 20161115135335.0
000015977 04107 $$aeng
000015977 046__ $$k2013-06-12
000015977 100__ $$aTabuchi, T.
000015977 24500 $$aComputational Simulation of Internal Flow in the Left Ventricular Displacement Pump Model

000015977 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015977 260__ $$bNational Technical University of Athens, 2013
000015977 506__ $$arestricted
000015977 520__ $$2eng$$aRecently, the number of heart disease patients is increasing. It is important to know the blood flow in left ventricle for appropriate diagnosis, however it is difficult to measure with clinical apparatus because of the unsteady and complex deformation behavior of left ventricle. Therefore, we aim to simulate the blood flow with computational simulation. As a fundamental study, we simulate the flow in the simulation model of displacement pump whose capacity is changed in a cycle. We use 2-dimentional Navier-Stokes equations as governing equations. To deal with arbitrary body shape like displacement pump and valves on the Cartesian grid, we use virtual flux method [1]. The virtual flux method is one of the sharp interface Cartesian grid methods. The numerical flux across the interface is replaced with the virtual flux so that proper interface condition could be satisfied there. We simulate the blood flow in the computational model. The volume of the model changes in a cycle as displacement pump, and two valves are moved by the fluid force and governed by rigid-body rotation. Two vortices are generated in the model (Fig. 1), and we validate mass conservation in terms of flow rate (Fig. 2).

000015977 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015977 653__ $$a

000015977 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015977 720__ $$aTabuchi, T.$$iFukui, T.$$iMorinishi, K.
000015977 8560_ $$ffischerc@itam.cas.cz
000015977 8564_ $$s88808$$uhttps://invenio.itam.cas.cz/record/15977/files/2048.pdf$$yOriginal version of the author's contribution as presented on CD, section: SC-RS 01 BIOMECHANICS
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000015977 962__ $$r15525
000015977 980__ $$aPAPER