Simulation Studies on the Hemodynamics of a Centrifugal Ventricular Assist pump

Feng, Haiquan; Wang, Dong; Wang, Kun; Zhu, Mingxin

doi:10.5293/ijfms.2019.12.3.181

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…[6][7][8] Many scholars have done a lot of numerical research on the external characteristics and internal flow of blood pumps. 9 In order to reveal the interaction between the centrifugal blood pump and blood during the operation, Feng et al 10 adopted the standard k-v turbulence model to simulate the flow in the pump and analyzed the influence of the changes in blade height, rotating speed, and other factors on the flow field and dynamic performance of the pump. The results show that the rotating speed of the impeller has the greatest influence on the performance.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the flow field characteristics of a centrifugal blood pump in a heartbeat cycle

Zhang,

Yang,

Shao

2024

Advances in Mechanical Engineering

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Blood pumps are medical devices that can temporarily or permanently replace the heart to perform the job of blood pumping. To study the internal flow field characteristics of the centrifugal blood pump, high-speed photography (HSP) images of the internal flow in the centrifugal blood pump were taken, and the internal flow field was numerically simulated. According to the heartbeat rule, the visualization experiment method and numerical simulation method for the internal flow of the centrifugal blood pump were developed. The internal flow rule of the centrifugal blood pump during a heartbeat cycle was revealed, as well as the influence of pump construction, flow rate, and other factors on the pump’s flow field. The results indicate that the flow rate and the rotor/stator interference of the blade and volute tongue cause two periodic changes in the pump pressure and velocity. One is the cycle of the heartbeat, and the other is the cycle of the blade’s rotation. The research results are of great significance in reducing the mechanical damage of blood, optimizing the structure of the pump and improving the stability of the centrifugal blood pump.

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Section: Introductionmentioning

confidence: 99%

Analysis of the flow field characteristics of a centrifugal blood pump in a heartbeat cycle

Zhang,

Yang,

Shao

2024

Advances in Mechanical Engineering

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“…And a detailed study of the performance of the molten salt pump was conducted. Previous relevant studies on the micro centrifugal pump have also been carried out, but they mainly focused on internal flow [13][14][15] cavitation, [16][17][18] changing the structure to improve performance [19][20][21] and so on.…”

Section: Introductionmentioning

confidence: 99%

Study on modeling test method and the critical Reynolds number of a micro centrifugal pump

Bao

Zhao

Shao

2023

Proceedings of the Institution of Mechanical Engineers, Part A:

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In order to test the performance of the micro centrifugal pump and carry out performance analysis by using water instead of blood as the test medium, a modeling test method of the micro centrifugal pump was proposed in this paper. Dimensional analysis method was applied to study the dimensionless characteristic number of the micro centrifugal pump. The SST (Shear Stress Transport) k-ω model was used to simulate the flow in the prototype pump and model pump. The correctness of the similarity theory and modeling schemes was verified. The performance of the micro centrifugal pump for transporting water and blood was studied under the same working conditions, and the effect of Reynolds number on the performance of the micro centrifugal pump was discussed. The external characteristics of similar pumps can be converted to each other. For similar pumps under different modeling schemes, the pressure and velocity at the corresponding position is proportional. When the micro centrifugal pump that transports blood operates at low rotational speed and low flow rate, the performance of the micro centrifugal pump will change dramatically. The critical Reynolds number of the micro centrifugal pump is determined to be 1200. The similarity criterion between the prototype pump and model pump was established. The modeling schemes of the micro centrifugal pump were formulated. The critical Reynolds number of the micro centrifugal pump was determined. The research results provide a new method for the performance test of the micro centrifugal pump transporting blood.

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Numerical Prediction of the Effect of Typical Particle Properties on a Centrifugal Pump

Ji,

Tong,

Zhang

et al. 2024

IEEE Access

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Simulation Studies on the Hemodynamics of a Centrifugal Ventricular Assist pump

Cited by 3 publications

References 14 publications

Analysis of the flow field characteristics of a centrifugal blood pump in a heartbeat cycle

Analysis of the flow field characteristics of a centrifugal blood pump in a heartbeat cycle

Study on modeling test method and the critical Reynolds number of a micro centrifugal pump

Numerical Prediction of the Effect of Typical Particle Properties on a Centrifugal Pump

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