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Modeling of Recirculation in Axial Flow Pumps
1992The object of this paper is to qualitatively point out the critical flow rate corresponding to recirculation in the axial pumps. This situation is reached when the global flow rate of the machine decreases from the nominal value Qm to a first critical value Qk corresponding to the cancellation of the flow rate at the hub.
R. Noguera +3 more
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Relationship Between Pump Speed Design and Hemolysis in an Axial Flow Blood Pump
Artificial Organs, 1996AbstractIn an attempt to reduce the hemolysis caused by axial flow blood pumps, we investigated whether the specific speed should be kept within the standard engineering range or whether pump speed should be minimized, thus making the specific speed beyond the standard range.
Hirofumi, Anai +5 more
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A Hydraulic Design Procedure of Axial-Flow Pump
Volume 1A: Symposia, Part 2, 2015A radical decrease of the product development time has been achieved by implementation of simulation driven development on axial-flow pump design. A new automatic hydraulic design procedure of axial-flow pumps was developed. It consists of in-house developed parametric design template, Visual Basic macro, OpenFOAM and an in-house developed pump ...
Zhenhua Shen +3 more
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Development of an Intracardiac Axial Flow Pump
2000The intracardiac axial flow pump implanted at the heart valve position, with preservation of the diseased heart muscle, has several advantages over artificial heart replacement: good anatomical fitting to the natural heart, less blood contacting surface, and easy implantation technique.
Yoshinori Mitamura +4 more
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On a new axial flow molecular pump
Journal of Scientific Instruments, 1965The theory of highly rarefied cascade flow has been presented and a proposal for a new axial flow (or radial flow) molecular pump (or compressor) in the free-molecule range has been made. An unconventional cascade has been suggested which will produce an extremely high compression ratio (up to 30 000) in a single stage at very high blade speed (S = Vc/(
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The Performance of an Axial-Flow Pump
Proceedings of the Institution of Mechanical Engineers, 1956Tests were made on an 11-inch diameter axial-flow propeller pump with impeller and guide blades designed for free vortex conditions, using as a basis the modified aerofoil theory. The best overall efficiency obtained was 82 per cent. Apart from head-flow and efficiency characteristics, measurements were made of velocities and yaw angles within the ...
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Controller for an axial-flow blood pump.
Biomedical instrumentation & technology, 1997An axial-flow ventricular assist device (VAD) under development at the authors' facility is intended for use as a long-term implantable device. At high speeds axial-flow VADs can collapse the native ventricle and damage the heart muscle, lung tissue, and blood.
D V, Amin +8 more
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