The effect of shear stress on the impeller design of centrifugal blood PUMP

Mondee, Kamonwan; Foojinphan, Nutchanant; Wannawat, Praemai; Naiyanetr, Phornphop

doi:10.1109/bmeicon.2016.7859604

Cited by 3 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15 Kamonwan et al analyzed the head-flow (H-Q) curves and shear stress distributions of a backward impeller and a backward with under blade cut impeller and pointed out that the shear stress of the backward impeller was lower. 16 Wiegmann et al studied the effects of gap size, blade number, and shroud design on the hydraulic and hemodynamic performances of blood pumps based on CFD and found that potentially damaging shear stress conditions were associated with larger gap size and more blades. 17 Kannojiya et al observed the influence of blade profile, tip width, and splitter blades on hemodynamic characteristics through the pump and proposed an optimum design of the centrifugal blood pump.…”

Section: Introductionmentioning

confidence: 99%

“…Song et al implemented numerical simulation on the inner flow of the pump with the impeller with straight blades to investigate the effect of impeller blade profiles on the pump's hemocompatibility 15 . Kamonwan et al analyzed the head–flow (H‐Q) curves and shear stress distributions of a backward impeller and a backward with under blade cut impeller and pointed out that the shear stress of the backward impeller was lower 16 . Wiegmann et al studied the effects of gap size, blade number, and shroud design on the hydraulic and hemodynamic performances of blood pumps based on CFD and found that potentially damaging shear stress conditions were associated with larger gap size and more blades 17 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hemodynamic investigation of a novel rotary displacement blood pump for extracorporeal membrane oxygenation

Xue

Ren

Gao

et al. 2023

Numer Methods Biomed Eng

View full text Add to dashboard Cite

Extracorporeal membrane oxygenation (ECMO) is a life support system used in the treatment of severe respiratory and circulatory failure. High shear stress caused by the high rotational speed of centrifugal blood pumps can cause hemolysis and platelet activation, which are among the major factors leading to the complications of the ECMO system. In this study, a novel blood pump named rotary displacement blood pump (RDBP), which can considerably reduce rotational speed and shear stress while ensuring the normal pressure flow relationship, was proposed. We employed computational fluid dynamics (CFD) analysis to investigate the performance of RDBP under adult ECMO support operating conditions (5 L/min with 350 mmHg). The efficiency and H‐Q curves of the RDBP were calculated to evaluate its hydraulic performance, and pressure, flow patterns, and shear stress distribution were analyzed to estimate the hemodynamic characteristics in the pump. In addition, the modified index of hemolysis (MIH) was calculated for the RDBP based on a Eulerian approach. The hydraulic efficiency of the RDBP was 47.28%. The velocity distribution of flow field in the pump was relatively uniform. Most of the liquid (more than 75%) in the pump was exposed to low scale shear stress (<1 Pa), which was close to normal physiological conditions. The gap area was the main distribution location of high scale shear stress. The high wall shear stress (>9 Pa) volume fraction of the RDBP was small and located in the boundary areas between the rotor's edge and the housing. The MIH value of the RDBP was 9.87 ± 0.93 (mean ± SD). The RDBP can achieve better hydraulic efficiency and hemodynamic performance at lower rotational speed. The design of this novel pump is expected to provide a new direction for developing a blood pump for ECMO.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hemodynamic investigation of a novel rotary displacement blood pump for extracorporeal membrane oxygenation

Xue

Ren

Gao

et al. 2023

Numer Methods Biomed Eng

View full text Add to dashboard Cite

show abstract

Comparison and Experimental Validation of Turbulence Models for an Axial Flow Blood Pump

Wang

Tan

2019

J. Mech. Med. Biol.

View full text Add to dashboard Cite

Computational fluid dynamics (CFD) has become an essential tool for designing and optimizing the structure of blood pumps. However, it is still questionable which turbulence model can better obtain the flow information for axial flow blood pump. In this study, the axial flow blood pump was used as the object, and the influence of the common turbulence models on simulation was compared. Six turbulence models (standard [Formula: see text]–[Formula: see text] model, RNG [Formula: see text]–[Formula: see text] model, standard [Formula: see text]–[Formula: see text] model, SST [Formula: see text]–[Formula: see text] model, Spalart–Allmaras model, SSG Reynolds stress model) were used to simulate the pressure difference and velocity field of the pump. In parallel, we designed a novel drive system of the axial flow blood pump, which allowed the camera to capture the internal flow field. Then we measured the flow field in the impeller region based on particle image velocimetry (PIV). Through the comparison of experiments and simulation results, the average errors of velocity field obtained by the above models are 30.97%, 19.40%, 24.25%, 15.28%, 28.51%, 23.00%, respectively. Since the SST [Formula: see text]–[Formula: see text] model has the smallest error, and the streamline is consistent with the experimental results, it is recommended to use SST [Formula: see text]–[Formula: see text] model for numerical analysis of the axial flow blood pump.

show abstract

Computational fluid dynamics analysis of a centrifugal blood pump with washout hole diameter variations.

Chaiyapruknukul,

Naiyanetr,

Aramphianlert

2023

Proceedings of the 2023 13th International Conference on Biomedical Engineering and Technology

View full text Add to dashboard Cite

The effect of shear stress on the impeller design of centrifugal blood PUMP

Cited by 3 publications

References 6 publications

Hemodynamic investigation of a novel rotary displacement blood pump for extracorporeal membrane oxygenation

Hemodynamic investigation of a novel rotary displacement blood pump for extracorporeal membrane oxygenation

Comparison and Experimental Validation of Turbulence Models for an Axial Flow Blood Pump

Computational fluid dynamics analysis of a centrifugal blood pump with washout hole diameter variations.

Contact Info

Product

Resources

About