Abstract
A test model of a centrifugal pump with constant cross-section channels in the rotor was developed using 3D computer simulation. The channels are shaped as a logarithmic spiral. The geometry of the flow channel providing optimal flow in the nominal operating mode (flow, 5 L/min; pressure drop, 100 mm Hg) was calculated. In addition, pump operation conditions in the extracorporeal membrane oxygenation (ECMO) mode were considered. The main requirements imposed on the developed test model were those of meeting the allowable shear stress threshold and minimizing the stagnation and flow recirculation zones.
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