Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.13091/2507
Title: | An experimental performance comparison of Newtonian and non-Newtonian fluids on a centrifugal blood pump | Authors: | Önder, Ahmet Yapıcı, Rafet İncebay, Ömer |
Keywords: | Aqueous xanthan gum solution centrifugal blood pump hydraulic efficiency head curve non-Newtonian fluid Heart-Failure Flow Dynamics Analog |
Publisher: | Sage Publications Ltd | Abstract: | 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. | URI: | https://doi.org/10.1177/09544119211057626 https://hdl.handle.net/20.500.13091/2507 |
ISSN: | 0954-4119 2041-3033 |
Appears in Collections: | Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collections Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections Teknik Bilimler Meslek Yüksekokulu Koleskiyonu WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
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