A Numerical Analysis on Three-Dimensional Flow Field in a Supersonic Bump Inlet

2007 ◽  
Author(s):  
Sang Dug Kim ◽  
Dong Joo Song ◽  
Seol Lim
Keyword(s):  
Numerical Analysis ◽  
Flow Field ◽  
Three Dimensional ◽  
Three Dimensional Flow ◽  
Dimensional Flow

Numerical Analysis of Air-Hydrogen Mixture Flow in Three-dimensional Flow Field

2018 ◽  
Vol 2018.24 (0) ◽  
pp. OS0611
Author(s):  
Naoto KATO ◽  
Hitoshi SUGIYAMA ◽  
Atsuhiko TERADA ◽  
Yu KAMIJI ◽  
Ryutaro HINO
Keyword(s):  
Numerical Analysis ◽  
Flow Field ◽  
Three Dimensional ◽  
Three Dimensional Flow ◽  
Mixture Flow ◽  
Dimensional Flow ◽  
Hydrogen Mixture

Experimental and numerical analysis of a three-dimensional flow field for PEMFCs

2017 ◽  
Vol 195 ◽  
pp. 278-288 ◽  
Author(s):  
Wenkai Li ◽  
Qinglei Zhang ◽  
Chao Wang ◽  
Xiaohui Yan ◽  
Shuiyun Shen ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Flow Field ◽  
Three Dimensional ◽  
Three Dimensional Flow ◽  
Dimensional Flow

Simulation of Three-Dimensional Flow Field Around Unconventional Bridge Piers

2017 ◽  
Author(s):  
Adnan Ismael ◽  
Hamid Hussein ◽  
Mohammed Tareq ◽  
Mustafa Gunal
Keyword(s):  
Flow Field ◽  
Three Dimensional ◽  
Bridge Piers ◽  
Three Dimensional Flow ◽  
Dimensional Flow

Experimental investigation on the three-dimensional flow field from a meltblowing slot die

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 724-732
Author(s):  
Changchun Ji ◽  
Yudong Wang
Keyword(s):  
Flow Field ◽  
Three Dimensional ◽  
Great Influence ◽  
Distribution Characteristics ◽  
Air Velocity ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Airflow Distribution ◽  
Slot Die ◽  
Center Area

AbstractTo investigate the distribution characteristics of the three-dimensional flow field under the slot die, an online measurement of the airflow velocity was performed using a hot wire anemometer. The experimental results show that the air-slot end faces have a great influence on the airflow distribution in its vicinity. Compared with the air velocity in the center area, the velocity below the slot end face is much lower. The distribution characteristics of the three-dimensional flow field under the slot die would cause the fibers at different positions to bear inconsistent air force. The air velocity of the spinning centerline is higher than that around it, which is more conducive to fiber diameter attenuation. The violent fluctuation of the instantaneous velocity of the airflow could easily cause the meltblowing fiber to whip in the area close to the die.

scholarly journals Transient Three-Dimensional Flow Field Measurements by Means of 3D µPTV in Drying Poly(Vinyl Acetate)-Methanol Thin Films Subject to Short-Scale Marangoni Instabilities

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1223
Author(s):  
Max Tönsmann ◽  
Philip Scharfer ◽  
Wilhelm Schabel
Keyword(s):  
Flow Field ◽  
Vinyl Acetate ◽  
Three Dimensional ◽  
Field Measurements ◽  
Initial Assessment ◽  
Ambient Conditions ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Short Scale ◽  
Dry Film

Convective Marangoni instabilities in drying polymer films may induce surface deformations, which persist in the dry film, deteriorating product performance. While theoretic stability analyses are abundantly available, experimental data are scarce. We report transient three-dimensional flow field measurements in thin poly(vinyl acetate)-methanol films, drying under ambient conditions with several films exhibiting short-scale Marangoni convection cells. An initial assessment of the upper limit of thermal and solutal Marangoni numbers reveals that the solutal effect is likely to be the dominant cause for the observed instabilities.

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