Characterization of the thermal and solutal Marangoni flows of opposite directions developing in a cylindrical liquid bridge under zero gravity

2020 ◽  
Vol 32 (3) ◽  
pp. 034104
Author(s):  
Chihao Jin ◽  
Atsushi Sekimoto ◽  
Yasunori Okano ◽  
Hisashi Minakuchi ◽  
Sadik Dost
Keyword(s):  
Liquid Bridge ◽  
Zero Gravity ◽  
Marangoni Flows

Temperature Distribution of High Prandtl Number Liquid Bridge under Zero Gravity

2013 ◽  
Vol 712-715 ◽  
pp. 1638-1641
Author(s):  
Ru Quan Liang ◽  
Shuo Yang ◽  
Jun Hong Ji ◽  
Fu Sheng Yan ◽  
Ji Cheng He
Keyword(s):  
Temperature Field ◽  
Prandtl Number ◽  
Liquid Bridge ◽  
Surface Deformation ◽  
Stokes Equations ◽  
Ambient Air ◽  
Conservation Equation ◽  
Staggered Grid ◽  
Zero Gravity ◽  
High Prandtl Number

A numerical model has been developed to investigate temperature field of high prandtl number liquid bridge under zero-gravity condition, and numerical simulations have been carried out. The Navier-Stokes equations coupled with the energy conservation equation on a staggered grid. In numerical calculations, we considered not only the free surface deformation but also the effects of ambient air. Overall numerical analysis of liquid bridge was carried out by level set method of mass conservation to capture two phase interfaces. Simultaneously, results of temperature field in liquid bridge and ambient gas-phase were given.

scholarly journals Discrete Characterization of Cohesion in Gas-Solid Flows

2002 ◽  
Author(s):  
Kunal Jain ◽  
J. J. McCarthy
Keyword(s):  
Granular Material ◽  
Significant Role ◽  
Liquid Bridge ◽  
Electrostatic Repulsion ◽  
Interaction Forces ◽  
Particle Properties ◽  
Cohesive Forces ◽  
Microscopic Picture ◽  
Made In

Cohesive forces between grains can arise from a variety of sources – such as liquid bridge (capillary) forces, van der Waals forces, or electrostatic forces – and may play a significant role in the processing of fine and/or moist powders. While recent advances have been made in our understanding of liquid-induced cohesion at the macroscopic level, in general, it is still not possible to directly connect this macroscopic understanding of cohesion with a microscopic picture of the particle properties and interaction forces. In fact, conventional theories make no attempt to distinguish between these modes of cohesion, despite clear qualitative differences (lubrication forces in wet systems or electrostatic repulsion are two good examples). In this work, we discuss several discrete characterization tools for wet (cohesive) granular material with simple, physically relevant interpretations. We examine the utility of these tools, both computationally and experimentally, by exploring a range of cohesive strengths (from cohesionless to cohesive) in several prototypical applications of solid and gas-solid flows.

Global Linear Stability Analysis of Thermo-solutal Marangoni Convection in a Liquid Bridge Under Zero Gravity

2020 ◽  
Vol 32 (4) ◽  
pp. 729-735
Author(s):  
Radeesha Laknath Agampodi Mendis ◽  
Atsushi Sekimoto ◽  
Yasunori Okano ◽  
Hisashi Minakuchi ◽  
Sadik Dost
Keyword(s):  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Liquid Bridge ◽  
Marangoni Convection ◽  
Zero Gravity

scholarly journals A Numerical Study on the Exact Onset of Flow Instabilities in Thermo-Solutal Marangoni Convection Driven by Opposing Forces in a Half-Zone Liquid Bridge under Zero Gravity

2021 ◽  
Vol 54 (8) ◽  
pp. 424-430
Author(s):  
Radeesha Laknath ◽  
Agampodi Mendis ◽  
Atsushi Sekimoto ◽  
Yasunori Okano ◽  
Hisashi Minakuchi ◽  
...  
Keyword(s):  
Liquid Bridge ◽  
Marangoni Convection ◽  
Numerical Study ◽  
Flow Instabilities ◽  
Zero Gravity
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