Numerical simulation and experimental validation of liquid-film-flow characteristics in dip coating for non-Newtonian fluids

2016 ◽  
Vol 56 (9) ◽  
pp. 1070-1078 ◽  
Author(s):  
Xian-Ming Zhang ◽  
Meng-Meng Chen ◽  
Jian-Ping Ma ◽  
Wen-Xing Chen ◽  
Lian-Fang Feng
Keyword(s):  
Numerical Simulation ◽  
Liquid Film ◽  
Experimental Validation ◽  
Film Flow ◽  
Flow Characteristics ◽  
Dip Coating ◽  
Newtonian Fluids ◽  
Liquid Film Flow

On the Liquid Film Flow Characteristics During the Rewetting in the Single Rod Air-Water System

2018 ◽  
Author(s):  
Yuki Wada ◽  
Dan Le ◽  
Akira Satou ◽  
Yasuteru Sibamoto ◽  
Taisuke Yonomoto
Keyword(s):  
Liquid Film ◽  
Film Flow ◽  
Current System ◽  
Mechanistic Model ◽  
Water System ◽  
Flow Characteristics ◽  
Liquid Film Flow ◽  
Single Heater ◽  
Dry Out ◽  
Cooling Model

Dry-out and rewetting phenomenon may occur on a fuel rod surface during anticipated operational occurrences (AOOs) for a boiling water reactor (BWR). The conventional rewetting model included in the current system code tends to underestimate the rewetting propagation velocity due to the absence of an appropriate precursory cooling model. The present research aims at the development of a mechanistic model for the precursory cooling in the annular mist flow regime typical of AOO and anticipated transition without scrum (ATWS). Rewetting experiments were carried out using a single heater rod in the circular glass pipe with air-water flow at atmospheric pressure to visualize the rewetting behavior and obtain mechanistic understanding on the phenomena. This paper summarizes the experimental results and discusses the liquid film flow characteristics including roll wave formation and spattering at the rewetting front.

NUMERICAL PREDICTION OF LIQUID FILM FLOW CHARACTERISTICS OF COLUMN FLOW OUTSIDE HORISONTAL TUBE

2018 ◽  
Author(s):  
Qinggang Qiu ◽  
Chuiju Meng ◽  
Xiaojing Zhu ◽  
Shenglin Quan ◽  
Shengqiang Shen
Keyword(s):  
Liquid Film ◽  
Film Flow ◽  
Flow Characteristics ◽  
Numerical Prediction ◽  
Liquid Film Flow

Numerical Simulation of the Effect of the Uneven Wall on the Liquid Film Flow

2013 ◽  
Vol 477-478 ◽  
pp. 232-235
Author(s):  
Mei Liu ◽  
Yongxin Zhu ◽  
Song Ling Wang
Keyword(s):  
Liquid Film ◽  
Film Flow ◽  
Flow Characteristics ◽  
Wave Profile ◽  
Wall Structure ◽  
Wavy Wall ◽  
Continuous Film ◽  
Wall Structures ◽  
Liquid Film Flow ◽  
The Impact

Two-dimensional models of inclined flat and corrugated walls are established based on VOF method to numerically simulate the flow characteristics of liquid film. The impact of wall structures on the wave profile of the film is studied. The results indicate that the wall structure plays an important role on the liquid film, there are vortexes generated on the trough of wavy wall, the vortex has the "rolling" effect in machinery, which reduces the viscous resistance. and continuous film is easier to form on the wall whose corrugated size is smaller.

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