scholarly journals Entrance flow of unfoamed and foamed Herschel–Bulkley fluids

2021 ◽  
Vol 65 (6) ◽  
pp. 1155-1168
Author(s):  
Kim Mishra ◽  
Lucas Grob ◽  
Lucas Kohler ◽  
Simon Zimmermann ◽  
Stefan Gstöhl ◽  
...  
Keyword(s):  
Entrance Flow

scholarly journals Continuous Flow Controlled Synthesis of Gold Nanoparticles Using Pulsed Mixing Microfluidic System

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Guojun Liu ◽  
Xuhao Yang ◽  
Yan Li ◽  
Zhigang Yang ◽  
Wen Hong ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Flow Rate ◽  
Research Work ◽  
Microfluidic System ◽  
Noble Metal Nanoparticles ◽  
Controlled Synthesis ◽  
Entrance Angle ◽  
Section Size ◽  
Pulsed Mixing ◽  
Entrance Flow

To prepare the gold nanoparticles (AuNPs) with uniform sizes, fine morphology, and good monodispersity, a pulsed mixing microfluidic system based on PZT actuation was presented. The system includes PZT micropump and Y type micromixer. By adjusting voltage (entrance flow rate), pulsed frequency, phase, and other parameters, a variety of mixing modes can be achieved, so as to realize the controllable synthesis of nanoparticles in a certain range. By numerical simulation and analysis, the channel section size, entrance angle, and pulse frequency were optimized. Based on the optimized structure and working parameters, the test prototype has been manufactured in lab, and the related synthesis tests of AuNPs were carried out. The test results indicate that AuNPs with uniform morphology and good monodispersity can be synthesized using the system with the section size (0.4 mm × 0.4 mm), the entrance channel angle (60°) under condition of the pulsed frequency (300 Hz), and the entrance flow rate (4 mL/min). The average diameter and its standard deviation of AuNPs synthesized were 21.6 nm, 4.83 nm, respectively. The research work above can be applied to the fields such as the controlled synthesis of noble metal nanoparticles, biomedicine, and microchemical system.

3D Analysis of Heat Transfer Intensification by Re-Entrance Flow Pin-Fins Microstructures with a Highly Thermal-Conductive Plate

2011 ◽  
Vol 34 (3) ◽  
pp. 379-390 ◽  
Author(s):  
Q. Wang ◽  
V. Hessel ◽  
E. V. Rebrov ◽  
B. Werner
Keyword(s):  
Heat Transfer ◽  
3D Analysis ◽  
Heat Transfer Intensification ◽  
Conductive Plate ◽  
Pin Fins ◽  
Entrance Flow

Entrance flow in elliptical ducts

1993 ◽  
Vol 17 (12) ◽  
pp. 1079-1096 ◽  
Author(s):  
K. Velusamy ◽  
Vijay K. Garg
Keyword(s):  
Entrance Flow

Entrance flow of a yield-power law fluid

1976 ◽  
Vol 32 (1) ◽  
pp. 73-85 ◽  
Author(s):  
R. J. Soto ◽  
V. L. Shah
Keyword(s):  
Power Law ◽  
Power Law Fluid ◽  
Entrance Flow

Incompressible Laminar Entrance Flow in a Circular Sector Duct

1976 ◽  
Vol 43 (2) ◽  
pp. 357-359 ◽  
Author(s):  
R. L. Wendt ◽  
C. L. Wiginton
Keyword(s):  
Circular Sector ◽  
Entrance Flow

Experimental observation on entrance flow inside extrusion dies

1996 ◽  
Vol 36 (21) ◽  
pp. 2663-2675 ◽  
Author(s):  
Yun-Han Chang ◽  
Shu-Heng Wen ◽  
Ta-Jo Liu
Keyword(s):  
Experimental Observation ◽  
Extrusion Dies ◽  
Entrance Flow
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