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Updated: May 5, 2026
08:59
Modeling and Experimental Analysis of the Single-Shaft Coaxial Motor-Pump Assembly in Electrohydrostatic Actuators
Published on: June 13, 2022
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Computational fluid dynamics analysis of the pump parameters in the helical flow pump
Kyohei Hosoda1, Kohei Ishii, Takashi Isoyama
1Department of Biomedical Engineering, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
Summary
This study optimized the helical flow pump (HFP) for artificial hearts by analyzing vane height, width, and volute pitch using CFD. Optimal vane proportions enhance pump performance, crucial for medical device development.
Area of Science:
- Biomedical Engineering
- Fluid Dynamics
- Mechanical Engineering
Background:
- The helical flow pump (HFP) was developed for total artificial heart applications.
- The HFP design incorporates a multi-vane impeller, motor stator, and double-helical volutes.
Purpose of the Study:
- To investigate the performance characteristics of the HFP.
- To conduct a parametric study to optimize HFP design parameters.
Main Methods:
- Computational Fluid Dynamics (CFD) analysis was employed.
- The computational model was validated against actual pump data.
- Parametric studies involved varying vane height, vane width, and helical volute pitch.
Main Results:
- Varying vane height significantly impacted H-Q curves and efficiency.
- Optimal vane proportions were identified as a height 1.5 to 2 times the width.
- Helical volute pitch showed similar trends to vane height, with optimal pitch between 1.5 and 2 times vane width.
Conclusions:
- The study clarified the influence of key design parameters on HFP performance.
- Further research is needed to determine precise optimal values for enhanced artificial heart function.
- Design optimization of the HFP is critical for advancing total artificial heart technology.
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