1012 Numerical Simulation of Magnetically Suspended Centrifugal Blood Pump : Effects of Single and Double Volutes, and their Impeller Diameter on Pump Performance

2010 ◽  
Vol 2010.85 (0) ◽  
pp. _10-12_
Author(s):  
Yuki FUKUI ◽  
Hiroyuki MATSUMIYA ◽  
Masaaki HORIE ◽  
Yoshifumi OGAMI
Keyword(s):  
Numerical Simulation ◽  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Pump Performance

An experimental performance comparison of Newtonian and non-Newtonian fluids on a centrifugal blood pump

2022 ◽  
pp. 095441192110576
Author(s):  
Ahmet Onder ◽  
Rafet Yapici ◽  
Omer Incebay
Keyword(s):  
Flow Rate ◽  
Rotational Speed ◽  
Performance Test ◽  
Newtonian Fluids ◽  
Friction Reduction ◽  
Blood Pump ◽  
Actual Performance ◽  
Centrifugal Blood Pump ◽  
Working Fluids ◽  
Pump Performance

The use of substitute fluid with similar rheological properties instead of blood is important due to ethical concerns and high blood volume consumption in pump performance test before clinical applications. The performance of a centrifugal blood pump with hydrodynamic journal bearing is experimentally tested using Newtonian 40% aqueous glycerin solution (GS) and non-Newtonian aqueous xanthan gum solution of 600 ppm (XGS) as working fluids. Experiments are performed at four different rotational speeds which are 2700, 3000, 3300, and 3600 rpm; experiments using GS reach between 8.5% and 37.2% higher head curve than experiments using the XGS for every rotational speed. It was observed that as the rotational speed and flow rate increase, the head curve difference between GS and XGS decreases. This result can be attributed to the friction reduction effect when using XGS in experiments at high rotation speed and high flow rate. Moreover, due to different fluid viscosities, differences in hydraulic efficiency were observed for both fluids. This study reveals that the use of Newtonian fluids as working fluids is not sufficient to determine the actual performance of a blood pump, and the performance effects of non-Newtonian fluids are remarkably important in pump performance optimizations.

Modified Fabrication Techniques Lead to Improved Centrifugal Blood Pump Performance

ASAIO Journal ◽  
1994 ◽  
Vol 40 (3) ◽  
pp. M767-M772 ◽  
Author(s):  
John J. Pacella ◽  
Andrew H. Goldstein ◽  
George J. Magovern ◽  
Richard E. Clark
Keyword(s):  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Pump Performance

Effect of Reynolds Number on Performance of a Small Centrifugal Pump

2003 ◽  
Author(s):  
Steven W. Day ◽  
Phillip P. Lemire ◽  
Ronald D. Flack ◽  
James C. McDaniel
Keyword(s):  
Reynolds Number ◽  
Numerical Study ◽  
Internal Flow ◽  
Blood Pump ◽  
Viscous Effects ◽  
Flow Curves ◽  
Centrifugal Blood Pump ◽  
Pump Performance ◽  
Lower Reynolds Number ◽  
Reynolds Number Flows

A study of a small centrifugal blood pump has been made to address the effectiveness of traditional pump affinity laws and the influence that viscous effects, as characterized by the Reynolds number, have on the pump performance. This was investigated both experimentally and numerically on models of a small implantable centrifugal blood pump, which has an impeller diameter of 46 mm with a log spiral volute. In the experiments, the Head-Flow curves were determined for speeds between 500 and 3000 rpm and for two different viscosity fluids. It was found that lower Reynolds number flows did not adhere to conventional pump affinity laws, whereas higher Reynolds number flows scale very effectively according to pump affinity laws. The numerical study consisted of comparing the generated head and internal flow field of the pump scaled based on traditional affinity laws with and without consideration of the Reynolds number. Like the experimental results, the numerical simulations indicate that consideration of the Reynolds number is necessary to insure accurate scaling in this small pump.

S0220104 Effect of Impeller Flow Path Geometry of a Centrifugal Blood Pump with a Monopivot Bearing on the Pump Performance

2014 ◽  
Vol 2014 (0) ◽  
pp. _S0220104--_S0220104-
Author(s):  
Kento NAKAYAMA ◽  
Masahiro NISHIDA ◽  
Daisuke SAKOTA ◽  
Ryo KOSAKA ◽  
Katsuyuki KUWANA ◽  
...  
Keyword(s):  
Flow Path ◽  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Pump Performance ◽  
Path Geometry

Effects of non-Newtonian fluid on centrifugal blood pump performance

2008 ◽  
Vol 35 (5) ◽  
pp. 613-617 ◽  
Author(s):  
Genguang Zhang ◽  
Mingyuan Zhang ◽  
Wanying Yang ◽  
Xianran Zhu ◽  
Qihui Hu
Keyword(s):  
Newtonian Fluid ◽  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Pump Performance

CLEVELAND CLINIC CENTRIFUGAL BLOOD PUMP PERFORMANCE UNDER VARIOUS MOTOR CONTROL MODES

ASAIO Journal ◽  
1999 ◽  
Vol 45 (2) ◽  
pp. 169
Author(s):  
A Medvedev ◽  
R Gerhart ◽  
D Horvath ◽  
A Massiello ◽  
L A R Golding
Keyword(s):  
Motor Control ◽  
Cleveland Clinic ◽  
Blood Pump ◽  
Centrifugal Blood Pump ◽  
Pump Performance

scholarly journals 817 Numerical Simulation of Magnetically Suspended Centrifugal Blood Pump

2014 ◽  
Vol 2014.89 (0) ◽  
pp. _8-21_
Author(s):  
Toshihide NONAKA ◽  
Takurou MATSUMOTO ◽  
Yoshifumi OGAMI
Keyword(s):  
Numerical Simulation ◽  
Blood Pump ◽  
Centrifugal Blood Pump

Experimental and Computational Studies of the Relative Flow Field in a Centrifugal Blood Pump

2000 ◽  
Vol 28 (1-2) ◽  
pp. 119-125 ◽  
Author(s):  
B. T. H. Ng ◽  
Weng Kong Chan ◽  
S. C. M. Yu ◽  
HaiDong Li
Keyword(s):  
Flow Field ◽  
Blood Pump ◽  
Computational Studies ◽  
Centrifugal Blood Pump ◽  
Relative Flow
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