Zobrazeno 1 - 10
of 118
pro vyhledávání: '"K X Qian"'
Publikováno v:
Advances in Mechanical Engineering, Vol 6 (2014)
The operation of water-jet propulsion can generate nonuniform inflow that may be detrimental to the performance of the water-jets. To reduce disadvantages of the nonuniform inflow, a rim-driven water-jet propulsion was designed depending on the techn
Externí odkaz:
https://doaj.org/article/7291efde0b4d4c34b1fff569ce34f06a
Publikováno v:
Applied Mechanics and Materials. :1234-1237
It is evident that a pulsatile flow is important for blood circulation because the flow pulsatility can reduce the resistance of peripheral vessels. It is difficult, however, to produce a pulsatile flow with an impeller pump, since blood damage will
Publikováno v:
Journal of Medical Engineering & Technology. 31:239-242
Previously it has been found by pump haemolysis testing that the flow rate has a remarkable effect on index of haemolysis (IH), while pressure head does not affect IH. Recent investigation with particle image velocimetry (PIV) technology has demonstr
Publikováno v:
Journal of Medical Engineering & Technology. 31:181-184
To investigate the feasibility of a long-term left ventricular assist device (LVAD) placed in the aortic valve annulus, an implantable aortic valve pump (21 mm outer diameter, weighing 27 g) was developed. The device consists of a central rotor and a
Publikováno v:
Journal of Medical Engineering & Technology. 31:170-174
In 1839, Earnshaw proved theoretically that it is impossible to achieve a stable equilibrium with a pure permanent maglev. Furthermore, in 1939, Braunbeck deduced that it is only possible to stabilize a super conductive or an electric maglev. In 2000
Publikováno v:
Medical Engineering & Physics. 28:383-388
According to tradition, permanent maglev cannot achieve stable equilibrium. The authors have developed, to the contrary, two stable permanent maglev impeller blood pumps. The first pump is an axially driven uni-ventricular assist pump, in which the r
Publikováno v:
Journal of Medical Engineering & Technology. 30:78-82
It is widely acknowledged that the permanent maglev cannot achieve stable equilibrium; the authors have developed, however, a stable permanent maglev centrifugal blood pump. Permanent maglev needs no position detection and feedback control of the rot
Publikováno v:
Journal of Medical Engineering & Technology. 30:353-357
Computational fluid dynamics (CFD) technology was applied to predict the flow patterns in the authors' streamlined blood pump and an American bio-pump with straight vanes and shroud, respectively. Meanwhile, haemolysis comparative tests of the two pu
Publikováno v:
Journal of Biomaterials Applications. 18:53-61
Based on the development of an impeller total artificial heart (TAH) (1987) and a permanent maglev (magnetic levitation) impeller pump (2002), as well as a patented magnetic bearing and magnetic spring (1996), a novel permanent maglev impeller TAH ha
Publikováno v:
Volume 1B, Symposia: Fluid Machinery; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Flow Manipulation and Active Control: Theory, Experiments and Implementation; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows.
This paper presents the results of an investigation on the feasibility and superiority of the shaftless water-jet propulsion. Resulting from the elimination of the upstream driving shaft, the shaftless model is a rim driven propulsion where shaftless