Fluid Dynamic Optimization of a Ventricular Assist Device Using Particle Image Velocimetry

Mussivand, Tofy; Day, Kevin; Naber, Barbara C.

doi:10.1097/00002480-199901000-00007

Cited by 31 publications

(24 citation statements)

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“…Magnetic resonance phase velocity mapping (MRPVM) and digital particle image velocimetry (DPIV) were used to evaluate the flow patterns in three prototype models of the TCPC. DPIV, an established fluid mechanic technique, has been used in limited biological applications, 1,7,11,15 but is a powerful technique to instantaneously quantify the twodimensional velocity over a large field of view. Unfortunately, DPIV is limited to in vitro applications.…”

Section: Introductionmentioning

confidence: 99%

Fluid Mechanic Assessment of the Total Cavopulmonary Connection using Magnetic Resonance Phase Velocity Mapping and Digital Particle Image Velocimetry

Ensley

Ramuzat

Healy

et al. 2000

Annals of Biomedical Engineering

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Section: Introductionmentioning

confidence: 99%

Fluid Mechanic Assessment of the Total Cavopulmonary Connection using Magnetic Resonance Phase Velocity Mapping and Digital Particle Image Velocimetry

Ensley

Ramuzat

Healy

et al. 2000

Annals of Biomedical Engineering

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“…Flow visualization methods have been used to analyze flow behavior in various flow fields, such as inside blood pumps [4][5][6][7][8][9][10] and ventricular models [11,12]. Three mock pumps made of transparent acrylic resin with different port angles (0°, 30°, and 45°) were prepared for detailed flow visualization (Fig.…”

Section: Methodsmentioning

confidence: 99%

Flow visualization for different port angles of a pulsatile ventricular assist device

et al. 2011

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The "washout effect" inside a blood pump may depend in part on the configuration of the blood pump, including its "port angle." The port angle, which is primarily decided based on anatomical considerations, may also be important from the rheological viewpoint. In our department, a next-generation diaphragm-type blood pump is being developed. In this study, we examined the influence of the port angle on flow conditions inside our new blood pump. Acrylic resin mock pumps with three different port angles (0°, 30°, and 45°) were prepared for flow visualization. Mechanical monoleaflet valves were mounted on the inlet and outlet ports of the mock pumps. Flow conditions within the mock pumps were visualized by means of particle image velocimetry during a half stroke. As a result, a high flow velocity region was seen along the main circular flow from the inlet to the outlet port. This circular flow was almost uniform and parallel to the plane of the diaphragm-housing junction (DhJ) when viewed from the inlet and outlet sides. Moreover, the proportion of high flow velocity vectors in the plane in the vicinity of the DhJ decreased as the degree of the port angle increased. In conclusion, we found that the flow behavior in the plane in the vicinity of the DhJ changed with the port angle, and that a port angle of 0° may be suitable for our diaphragm-type blood pump in view of the washout effect.

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“…applied PIV to the study of heart valves and Wernet, et al (2001) compared the advantages of PIV with respect to LDA as applied to heart valves. Mussivand, et al (1999) applied PIV to a HeartSaver pulsatile VAD by using a 300 W halogen lamp and camera with frame rate of 1000/s, but was limited to 100-200 micron diameter particles due to the light source. That paper reported Reynolds shear stresses (RSS) based on the measured instantaneous velocity fluctuation using a 25 velocity data point ensemble in 5 mm region to obtain the mean velocity.…”

Section: Introductionmentioning

confidence: 99%

PIV Investigations of the Flow Field in the Volute of a Rotary Blood Pump

Sankovic

Kadambi

Mehta

et al. 2003

Volume 1: Fora, Parts A, B, C, and D

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A full-size acrylic model of a rotary blood pump was developed in order to utilize Particle Image Velocimetry (PIV) to make measurements of the fluid velocities and turbulent stresses throughout the device. The development of an understanding of the hemodynamics within the blood pump is critical to the development and validation of computational models. A blood analog solution, consisting of sodium iodide solution and glycerin, was developed to match physiological kinematic viscosity. The refractive indecies of the fluid, the pump casing and the impeller were matched to facilitate the use of PIV to make velocity measurements. Velocity measurements made in the volute exit/diffuser region are presented for pumps speeds of 3000–3850 rpm. At each speed data were obtained at a physiological pressure of 90 mmHg and at a maximum flow condition. Four hundred data pairs were used for each resultant mean velocity vector value, representing greater than an order of magnitude more data pairs than reported previously in the literature on similar devices and resulting in velocity uncertainty levels of approximately ±2.9%.

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Fluid Dynamic Optimization of a Ventricular Assist Device Using Particle Image Velocimetry

Cited by 31 publications

References 0 publications

Fluid Mechanic Assessment of the Total Cavopulmonary Connection using Magnetic Resonance Phase Velocity Mapping and Digital Particle Image Velocimetry

Fluid Mechanic Assessment of the Total Cavopulmonary Connection using Magnetic Resonance Phase Velocity Mapping and Digital Particle Image Velocimetry

Flow visualization for different port angles of a pulsatile ventricular assist device

PIV Investigations of the Flow Field in the Volute of a Rotary Blood Pump

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