Research and analysis of internal flow pattern and its influence on external spray in flow focusing/blurring nozzle

2021 ◽  
Author(s):  
Jin Zhao ◽  
Zhi Ning ◽  
Ming Lv ◽  
Chunhua Sun
Keyword(s):  
Flow Pattern ◽  
Internal Flow ◽  
Flow Focusing

Macroscopic characteristics and internal flow pattern of dimethyl ether flash-boiling spray discharged through a vertical twin-orifice injector

Energy ◽  
2016 ◽  
Vol 114 ◽  
pp. 1240-1250 ◽  
Author(s):  
Dehao Ju ◽  
Zhong Huang ◽  
Xiaoxu Jia ◽  
Xinqi Qiao ◽  
Jin Xiao ◽  
...  
Keyword(s):  
Flow Pattern ◽  
Dimethyl Ether ◽  
Internal Flow ◽  
Flash Boiling

Numerical simulation and experiment for study on internal flow pattern of vortex pump

2019 ◽  
Vol 36 (5) ◽  
pp. 1579-1596
Author(s):  
Hui Quan ◽  
Yi Chai ◽  
Rennian Li ◽  
Jianhui Guo
Keyword(s):  
Flow Pattern ◽  
Theoretical Foundation ◽  
Internal Flow ◽  
Content Type ◽  
Vortex Pump ◽  
Hydraulic Design ◽  
Through Flow ◽  
Simulation And Experiment ◽  
Flow Through ◽  
Working Out

Purpose The special structure of the vortex pump contributes to its complex internal flow pattern. A type of horizontal 150WX-200-20 vortex pump is taken as a research subject to deeply study the progression and distribution of flow pattern in its channel. To explain the mechanism of flow in this pump, numerical analysis of the whole flow and experiment have been conducted. Design/methodology/approach The authors studied and analyzed the distribution and evolution of flow pattern under different flow, such as circulating-flow, through-flow and other forms. Finally, a model of flow pattern in the vortex pump has been built, which has more perfectly fit the reality. Findings They are through-flow affected by circulating-flow, main and subsidiary circulating-flow, vortices between vanes and other vortices (or liquid impingement) in volute. Entering the pump, part of the flow stays in vanes and turn into vortices while the other goes into the front chamber. The flow that runs into the front chamber will be divided into two parts. One part will be collected by viscosity into a vortex rope when it passing through the interface between the impeller and the vaneless chamber, which closely relates to the circulating-flow, and the rest directly goes out of the field through the diffuser. Besides, a fraction of circulating-flow joins the through-flow when it goes through the section V and leaves the pump. Originality/value The research results build a theoretical foundation for working out the flow mechanism of the vortex pump, improving its efficiency and optimizing its hydraulic design.

Detailed Flow Investigations Within a High-Speed Centrifugal Compressor Impeller

1976 ◽  
Vol 98 (3) ◽  
pp. 390-399 ◽  
Author(s):  
D. Eckardt
Keyword(s):  
Flow Field ◽  
Flow Pattern ◽  
High Speed ◽  
Internal Flow ◽  
Suction Side ◽  
Turbulence Structure ◽  
Wake Interaction ◽  
Compressor Impeller ◽  
Channel Curvature ◽  
Relative Flow

Detailed accurate measurements of velocities, directions, and fluctuation intensities were performed with a newly developed laser velocimeter in the internal flow field of a radial discharge impeller, running at tip speeds up to 400 m/s. Relative flow distributions are presented in five measurement areas from inducer inlet to impeller discharge. The impeller flow pattern, which coincides largely with potential-theory calculations in the axial inducer, becomes more and more reversed when the flow separates from the blade suction side, developing a rapidly increasing wake in the radial impeller. The observed secondary flow pattern and effects of channel curvature and system rotation on turbulence structure are discussed with respect to separation onset and jet/wake interaction.

scholarly journals Multiphase performance and internal flow pattern of helico-axial pumps

2019 ◽  
Vol 240 ◽  
pp. 032029
Author(s):  
Y Xu ◽  
S L Cao ◽  
M Reclari ◽  
T Wakai ◽  
T Sano
Keyword(s):  
Flow Pattern ◽  
Internal Flow ◽  
Axial Pumps

DEPENDENCE OF SPRAYING PERFORMANCE ON THE INTERNAL FLOW PATTERN IN EFFERVESCENT ATOMIZERS

2001 ◽  
Vol 11 (6) ◽  
pp. 22 ◽  
Author(s):  
Sang Yong Lee ◽  
Joo Youn Kim
Keyword(s):  
Flow Pattern ◽  
Internal Flow

Study on improvement of hydraulic performance and internal flow pattern of the axial flow pump by groove flow control technology

2020 ◽  
Vol 160 ◽  
pp. 756-769
Author(s):  
Tong Mu ◽  
Rui Zhang ◽  
Hui Xu ◽  
Yuan Zheng ◽  
Zhaodan Fei ◽  
...  
Keyword(s):  
Flow Control ◽  
Flow Pattern ◽  
Axial Flow ◽  
Internal Flow ◽  
Hydraulic Performance ◽  
Control Technology ◽  
Axial Flow Pump ◽  
Flow Pump

scholarly journals CFD numerical simulation of sand-contained cavitation characteristics of axial-flow pump

2021 ◽  
Vol 13 (7) ◽  
pp. 168781402110327
Author(s):  
Peng Lin ◽  
Dong Hu ◽  
Jing-Man Lu ◽  
Shu Wang
Keyword(s):  
Particle Size ◽  
Flow Pattern ◽  
Great Influence ◽  
Axial Flow ◽  
Internal Flow ◽  
Sediment Concentration ◽  
Clean Water ◽  
Cavitation Performance ◽  
Axial Flow Pump ◽  
Flow Pump

To study the effect of sediment on the cavitation in the axial-flow pump, the method of CFD is employed to experiment on the internal flow field of the pump in the case of cavitation in clean water and sandy water separately. The calculation is done with different particle sizes and sediment concentrations. The results show that as the sediment concentration increases, the vortex range and cavitation area of the blade will further increase, and the flow pattern in the impeller becomes more disordered. The mechanism of action of particle size on cavitation is similar to that of sediment concentration. However, cavitation in clean water is quite different from that in sandy water in that the cavitation value and range in sandy water are significantly larger than that in clean water. By contrast, the particle size has little effect on the cavitation value and range. It proves that particle size does not have a great influence on cavitation distribution, but sediment concentration is the main factor affecting the cavitation performance of the pump. Moreover, sediment will disrupt the internal flow pattern of the pump, promote the development of cavitation and further reduce the cavitation performance of the pump.

scholarly journals A STUDY ON PERFORMANCE AND INTERNAL FLOW PATTERN OF A VORTEX PUMP

1978 ◽  
Vol 21 (162) ◽  
pp. 1741-1749 ◽  
Author(s):  
Hideki OHBA ◽  
Yukitoshi NAKASHIMA ◽  
Kazuaki SHIRAMOTO ◽  
Kazumasa SHIRAMOTO ◽  
Toshikatsu KOZIMA
Keyword(s):  
Flow Pattern ◽  
Internal Flow ◽  
Vortex Pump

INTERNAL FLOW PATTERN AND HEAT TRANSPORT PERFORMANCE OF AN OSCILLATING HEAT PIPE WITH GROOVED CHANNELS

2015 ◽  
Vol 22 (1-3) ◽  
pp. 81-96
Author(s):  
Kazusa Abiko ◽  
Akira Murata ◽  
Hiroshi Saito ◽  
Kaoru Iwamoto
Keyword(s):  
Heat Pipe ◽  
Flow Pattern ◽  
Heat Transport ◽  
Internal Flow ◽  
Oscillating Heat Pipe
Sign in / Sign up

Export Citation Format

Share Document