Numerical Investigation on Dropwise Condensation on Rough Structures with and without Non-Condensable Gas

2022 ◽  
Author(s):  
Mingjie Li ◽  
Wenjing Zhou ◽  
Jinjia Wei ◽  
Wenquan Tao
Keyword(s):  
Numerical Investigation ◽  
Dropwise Condensation

scholarly journals Numerical Investigation of Dropwise Condensation on Smooth Plates with Different Wettability

2021 ◽  
pp. 60-73
Keyword(s):  
Heat Transfer ◽  
Energy Consumption ◽  
Numerical Investigation ◽  
Crucial Role ◽  
Base Case ◽  
Dropwise Condensation ◽  
Cfd Model ◽  
Computational Fluids Dynamics ◽  
Computational Fluids ◽  
Lift Off

Condensers are used in various energy-intensive processing industries. Improving their efficiency plays a crucial role in the optimization of energy consumption. Dropwise Condensation is a highly attractive form of heat transfer. This project investigates the effects of different wettability characteristics in drop-wise condensation on smooth plates. It involves a Volume of Fluid (VOF) based Computational Fluids Dynamics (CFD) model to carry out the simulations in Open FOAM on smooth plates various wettability’s. Different parameters such as receding angle, advancing angle, and various radii of droplets have been used for investigation. A base case with droplets’ radius of 12.5μm, receding angle, and advancing angles of (34°, 90°) was used. Three sets of simulations were performed. In Set 1, the angles were (34°, 90°). The radius of the first droplet was kept constant at 12.5μm and the radius of the second droplet changes 1:4 progressively. In Set 2, the angles are changed to (154°, 162°), and the radius of the second droplet changes in the same manner above. In Set 3, the angles were kept at (107°, 117°). The radius changes as above. In some cases, the droplets merge and condense. In others, the momentum created by merging of the droplets creates repeated oscillation or even a lift-off, from the cooling plate.

Numerical Investigation of Discharge Current Path in a Hydrogen MPD Thruster

2016 ◽  
Vol 136 (3) ◽  
pp. 141-146 ◽  
Author(s):  
Akira Kawasaki ◽  
Kenichi Kubota ◽  
Ikkoh Funaki ◽  
Yoshihiro Okuno
Keyword(s):  
Numerical Investigation ◽  
Discharge Current ◽  
Current Path

Numerical Investigation of the Correlation between Electrode Structure and Number of Captured Particles in a Dielectrophoretic Device

2014 ◽  
Vol 134 (7) ◽  
pp. 235-240
Author(s):  
Ryoto Aoki ◽  
Naoki Shirai ◽  
Satoshi Uchida ◽  
Fumiyoshi Tochikubo
Keyword(s):  
Numerical Investigation ◽  
Electrode Structure
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