A Numerical Model for Muzzle Blast Flow Fields.

1980 ◽  
Author(s):  
T. D. Taylor ◽  
T. C. Lin
Keyword(s):  
Numerical Model ◽  
Flow Fields ◽  
Muzzle Blast

Numerical Model for Muzzle Blast Flowfields

AIAA Journal ◽  
1981 ◽  
Vol 19 (3) ◽  
pp. 346-349 ◽  
Author(s):  
T. D. Taylor ◽  
T. C. Lin
Keyword(s):  
Numerical Model ◽  
Muzzle Blast

Numerical Investigation for Inner Flow Fields and Structure Improvements of Medium Speed Mill

2013 ◽  
Vol 732-733 ◽  
pp. 481-486
Author(s):  
Xian Ran Zhu ◽  
Cheng Yong Liu ◽  
Liang Cheng
Keyword(s):  
Numerical Model ◽  
Pressure Drop ◽  
Numerical Investigation ◽  
Flow Rate ◽  
Static Pressure ◽  
Flow Fields ◽  
Field Conditions ◽  
Pressure Drops ◽  
Medium Speed ◽  
Commercial Code

The numerical model for ZGM95 medium speed mill is built and the inner flow fields are simulated by employing the commercial code of FLUENT. The results show that the distributions of the static pressure and the flow rate are not uniform for 36 nozzle rings due to the primary air entering the mill only from one side. Two modified structures are assumed to improve the mills performances and the corresponding models are simulated further. The flow fields are still not good enough and the pressure drop increases sharply in the mill when blocking several nozzle rings, and this structure is not recommended if the amount of pulverizer rejects is not extremely huge. The structure with double-inlet can improve the distribution of the flow fields effectively in the mill and few pressure drops of the mill increase. However, the feasibility of the double-inlet structure is also depends on the field conditions. The pressure drop will be less and the flow fields will be better when adopting the horizontal inlet duct instead of the inclined one.

Optimization Research of the Developing Machine Structure Based on Fluent

2015 ◽  
Vol 741 ◽  
pp. 50-54
Author(s):  
Hong Wei Xu ◽  
Yang Xu ◽  
Guo Wei Yao ◽  
Zhao Nie
Keyword(s):  
Numerical Model ◽  
Screen Printing ◽  
Jet Flow ◽  
Flow Fields ◽  
Printing Quality ◽  
Fluent Software ◽  
Simulation Results ◽  
The Right ◽  
Machine Structure ◽  
Fine Printing

Because of good and fine printing quality, screen printing is very common technology in printing and dyeing factory recently. Developing is important to insure the screen printing quality. In this paper, a developer structure is designed and studied. Fluent software is used to analyze the developing process. In this way, the numerical model of nozzle is founded. The jet flow fields of different structure fan-type nozzles are analyzed and compared. Depended on the simulation results, the right nozzle is chosen and used in the developer structure, and the structure of developer is modified to fit the cleaning quality required. The experiment of new structure developer with the chosen nozzle is done, and the experiment result shows better cleaning quality with the new developer and new nozzle.

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