Tomographic PIV behind a prosthetic heart valve

Hasler, David; Landolt, Andrin; Obrist, Dominik (2016). Tomographic PIV behind a prosthetic heart valve. Experiments in Fluids, 57(5) Springer 10.1007/s00348-016-2158-0

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The instantaneous three-dimensional velocity field past a bioprosthetic heart valve was measured using tomographic particle image velocimetry (PIV). Two digital cameras were used together with a mirror setup to record PIV images from four different angles. Measurements were conducted in a transparent silicone phantom with a simplified geometry of the aortic root. The refraction indices of the silicone phantom and the working fluid were matched to minimize optical distortion from the flow field to the cameras. The silicone phantom of the aorta was integrated in a flow loop driven by a piston pump. Measurements were conducted for steady and pulsatile flow conditions. Results of the instantaneous, ensemble and phase averaged flow field are presented. The three-dimensional velocity field reveals a flow topology, which can be related to features of the aortic valve prosthesis.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Cardiovascular Engineering (CVE)

Graduate School:

Graduate School for Cellular and Biomedical Sciences (GCB)

UniBE Contributor:

Hasler, David and Obrist, Dominik

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 620 Engineering

ISSN:

0723-4864

Publisher:

Springer

Language:

English

Submitter:

David Hasler

Date Deposited:

02 May 2016 14:52

Last Modified:

12 Feb 2017 02:03

Publisher DOI:

10.1007/s00348-016-2158-0

BORIS DOI:

10.7892/boris.79381

URI:

https://boris.unibe.ch/id/eprint/79381

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