Performance of a New Type of Water Jet Pump

1990 ◽  
Vol 112 (2) ◽  
pp. 172-174 ◽  
Author(s):  
H. Yano ◽  
J. Funaki ◽  
T. Shinoki ◽  
A. Kieda ◽  
S. Simotori

A new type of water jet pump called the bend-type jet pump was investigated both theoretically and experimentally for its performance, with the primary and secondary fluids both being water. The jet pump of this type with comparatively low area ratios is promising to transport liquid containing large particles. Valuable data are given to show its performance characteristics.

Author(s):  
Peixin Hu ◽  
◽  
M Zangeneh ◽  
Keyword(s):  
Jet Pump ◽  

2021 ◽  
Author(s):  
Jean Lilensten ◽  
Jean-Luc Dauvergne ◽  
Christophe Pellier ◽  
Marc Delcroix ◽  
Emmanuel Beaudoin ◽  
...  

<p>During the 2020 Mars opposition, we observe from Earth the occurrence of a non-typical large-scale high-altitude clouds system, extending over thousands of km from the equator to 50°S. Over 3 hours, they emerge from the night side at an altitude of 90 (-15/+30) km and progressively dissipate in the dayside. They occur at a solar longitude of 316°, west of the magnetic anomaly and concomitantly to a regional dust storm. Despite their high altitude, they are composed of relatively large particles, suggesting a probable CO<sub>2</sub> ice composition, although H<sub>2</sub>O cannot be totally excluded. Such ice clouds were not reported previously. We discuss the formation of this new type of clouds and suggest a possible nucleation from cosmic particle precipitation.</p>


2017 ◽  
Vol 140 ◽  
pp. 258-269 ◽  
Author(s):  
Puyu Cao ◽  
Yang Wang ◽  
Can Kang ◽  
Guidong Li ◽  
Xiang Zhang

Author(s):  
Hong Gao ◽  
Wanlai Lin ◽  
Fangming Ye

The purpose of the present study is to investigate the global performance and three dimensional flow fields in a water-jet pump. TASCflow software is employed to simulate the rotator-stator coupling flow field. A standard k-ε turbulence model combined with standard wall functions is used. In order to investigate the effect of a rear stator on flow fields, the flows in two water-jet pumps with and without a rear stator are studied. The CFD predicted global performances are in good agreement with the experimental results. Then the flow fields, such as the pressure distribution on the blade surfaces, the axial and tangential velocities distribution, especially the radial loading distribution are investigated at different flow rates. In addition, the effect of a rear stator and different spacing between the rotor and the stator on the global performance and the flow fields of the water-jet pump are also investigated.


2014 ◽  
Vol 69 (1-2) ◽  
pp. 165-176 ◽  
Author(s):  
Thirapong Muangnoi ◽  
Wanchai Asvapoositkul ◽  
Pibool Hungspreugs

Nature ◽  
1940 ◽  
Vol 146 (3691) ◽  
pp. 127-127
Keyword(s):  
Jet Pump ◽  

1995 ◽  
Vol 25 (9) ◽  
pp. 817-822 ◽  
Author(s):  
M. Ueda ◽  
A. Watanabe ◽  
T. Kameyama ◽  
Y. Matsumoto ◽  
M. Sekimoto ◽  
...  

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