Dynamics of non-Newtonian droplet breakup with partial obstruction in microfluidic Y-junction

2021 ◽  
Vol 240 ◽  
pp. 116696
Author(s):  
You Ma ◽  
Chunying Zhu ◽  
Taotao Fu ◽  
Youguang Ma ◽  
Huai Z. Li
1983 ◽  
Author(s):  
P. CHOUDHURY ◽  
M. GERSTEIN ◽  
H. YANG
Keyword(s):  

2021 ◽  
Vol 33 (1) ◽  
pp. 012113
Author(s):  
Zhaoguang Wang ◽  
Thomas Hopfes ◽  
Marcus Giglmaier ◽  
Nikolaus A. Adams

2021 ◽  
Vol 5 (3) ◽  
pp. 32
Author(s):  
Benedikt Mutsch ◽  
Peter Walzel ◽  
Christian J. Kähler

The droplet deformation in dispersing units of high-pressure homogenizers (HPH) is examined experimentally and numerically. Due to the small size of common homogenizer nozzles, the visual analysis of the transient droplet generation is usually not possible. Therefore, a scaled setup was used. The droplet deformation was determined quantitatively by using a shadow imaging technique. It is shown that the influence of transient stresses on the droplets caused by laminar extensional flow upstream the orifice is highly relevant for the droplet breakup behind the nozzle. Classical approaches based on an equilibrium assumption on the other side are not adequate to explain the observed droplet distributions. Based on the experimental results, a relationship from the literature with numerical simulations adopting different models are used to determine the transient droplet deformation during transition through orifices. It is shown that numerical and experimental results are in fairly good agreement at limited settings. It can be concluded that a scaled apparatus is well suited to estimate the transient droplet formation up to the outlet of the orifice.


2021 ◽  
Vol 9 ◽  
pp. 2050313X2110145
Author(s):  
Chaerim Oh ◽  
Hyun Joo Kim

In patients with intratracheal tumors, airway management while maintaining oxygenation and providing surgical access to the airway can be challenging. Here, we present a case of a two-stage operation to remove an intratracheal tumor causing partial obstruction near the carina. In the otorhinolaryngology department, a biopsy was performed during apnea under high-flow nasal oxygenation support. A few days later, a thoracic surgeon performed tracheal resection after sternotomy under general anesthesia. Mechanical ventilation was performed by inserting a sterile endotracheal tube in the resected distal part of the trachea in the surgical field for tracheal end-to-end anastomosis. Airway was successfully secured through close communication between teams of anesthesiologists and surgeons.


2017 ◽  
Vol 2 (12) ◽  
Author(s):  
Enrico Chiarello ◽  
Anupam Gupta ◽  
Giampaolo Mistura ◽  
Mauro Sbragaglia ◽  
Matteo Pierno

2014 ◽  
Author(s):  
Abdul A. S. Awwal ◽  
Richard R. Leach ◽  
Randy S. Roberts ◽  
Karl Wilhelmsen ◽  
David McGuigan ◽  
...  

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