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Titolo:
Computational fluid dynamics and experimental validation of a microaxial blood pump
Autore:
Apel, J; Neudel, F; Reul, H;
Indirizzi:
Helmholtz Inst Biomed Engn, Cardiovasc Technol Grp, D-52074 Aachen, Germany Helmholtz Inst Biomed Engn Aachen Germany D-52074 -52074 Aachen, Germany
Titolo Testata:
ASAIO JOURNAL
fascicolo: 5, volume: 47, anno: 2001,
pagine: 552 - 558
SICI:
1058-2916(200109/10)47:5<552:CFDAEV>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
VENTRICULAR ASSIST DEVICE; FLOW VISUALIZATION; IN-VITRO; DESIGN IMPROVEMENT; CENTRIFUGAL-PUMP; HEMOLYSIS; SYSTEM; PREDICTION; MODEL; DAMAGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Reul, H Helmholtz Inst Biomed Engn, Cardiovasc Technol Grp, Pauwelsstr 20,D-52074Aachen, Germany Helmholtz Inst Biomed Engn Pauwelsstr 20 Aachen Germany D-52074 y
Citazione:
J. Apel et al., "Computational fluid dynamics and experimental validation of a microaxial blood pump", ASAIO J, 47(5), 2001, pp. 552-558

Abstract

Intravascular application of microaxial blood pumps as heart assist devices requires a maximum in size reduction of the pump components. These limitations affect the design process in many ways and restrict the number of applicable experimental procedures, but a detailed knowledge of the hemodynamics of the pump is of great interest for efficiency enhancement and reduction of blood trauma and thrombus formation. Computational fluid dynamics (CFD) offers a convenient approach to this goal. In this study, the inlet, vane, and outlet regions of a microaxial blood pump used as an intraaortic leftventricular assist device are analyzed by CFD and 3-dimensional (3-D) particle tracking velocimetry (PTV). For this purpose, a mock loop is set up that facilitates 3-D flow visualization. Flow in the main part of this testing device is modeled and computed by means of CFD. Pump head/flow (HQ) characteristics, axial pressure distribution, and particle images are then compared with numerical flow data. Results show that the pump performance characteristics, as well as inlet and outlet swirl predicted by the CFD model, are quite accurate compared with measured data. Proper boundary condition definitions and spatial discretization topology requirements for satisfactory results are discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/20 alle ore 18:49:06