Balloon pumps are employed to assist cardiac function in cases of acute myocardial infarction, ventricular arrhythmias, cardiogenic shock, unstable angina, refractory failure, or surgery. Counterpulsation, through increasing the diastolic pressure and reducing systolic pressure, increases coronary perfusion assists heart pump more blood at each contraction. An expanding-contracting balloon, mod...

The vortex/swirl flowmeters are meant to measure the flowrate based on the measurement of the flow frequency. Due to the frequency-dependent computation of the flowrate, noflow pulsation causes a false positive, i.e., it indicates certain amount of flowrate when actually there is no flow. This happens when for example, the valves of the flow pipe are closed causing no flow, but some pumps are w...

The fluid mechanics of the flow of blood through the labrum of Glossina is described in uninfected and trypanosome infected flies. The flow is characterised by the Reynolds number, and a frequency parameter for the pulsating flow and non-newtonian viscosity effects are considered. The effects of colonies of trypanosomes on the flow rate in the labrum and the interactions between colonies of Try...

Abstract The selective frequency damping method was applied to a 90-degree bent flow. used in an adaptive formulation. most dangerous determined by solving eigenvalue problem. It found that one of the patterns, steady-state or pulsating, may exist at some relatively high Reynolds numbers. periodic flow occurs due instability This numerical is easy use but requires great deal time for calculatio...