Regulation of gas-liquid stratified flow boiling dynamic instabilities in horizontal tube: Effects of heat load distribution and wall thermal capacity

2018 ◽  
Vol 127 ◽  
pp. 426-436 ◽  
Author(s):  
Liang Zhang ◽  
Yufei Wang ◽  
Zitao Yu
Keyword(s):  
Load Distribution ◽  
Heat Load ◽  
Flow Boiling ◽  
Horizontal Tube ◽  
Stratified Flow ◽  
Thermal Capacity

Simulation of Laminar Stratified Flow Boiling of Liquid in a Horizontal Tube by the Coupled Map Lattice Model

2009 ◽  
Author(s):  
Indrajit Chakraborty ◽  
P. S. Ghoshdastidar ◽  
G. Biswas
Keyword(s):  
Heat Transfer ◽  
Complex Systems ◽  
Wall Temperature ◽  
Flow Boiling ◽  
Heated Surface ◽  
Horizontal Tube ◽  
Stratified Flow ◽  
Coupled Map Lattice ◽  
Transfer Model ◽  
Constant Wall Temperature

A new heat transfer model for stratified flow boiling in a horizontal tube is proposed in this present study. In recent years, the subject of nonlinear dynamics has progressed and various tools of analysis have been proposed for complex systems. Coupled Map Lattice (CML) method is one such tool which makes it possible to simulate complex systems and to capture the qualitative nature of the phenomenon. In this work, steady stratified flow boiling of water is simulated qualitatively by using the CML model for laminar, hydrodynamically and thermally developing flow and heat transfer in a horizontal tube. The liquid enters in a constant wall temperature tube (Tw*>Tsat* at Pentrance*) in a subcooled or saturated condition. The present modeling by CML is based on the assumption that the flow boiling is governed by nucleation from cavities on the heated surface, migration of vapor into the core, forced convection and phase change in the bulk. The macroscopic variable chosen is temperature. The influences of mass flow rate, inlet subcooling and wall temperature have been studied. The results of the computations provide information on the effect of aforementioned parameters on the heat transfer coefficient and void fraction. The results show that the CML has been able to model flow boiling in a realistic manner.

scholarly journals Erratum to “Radiative heat load distribution on the EU-DEMO first wall due to mitigated disruptions” [Nucl. Mater. Energy 25 (2020) 100824]

2021 ◽  
Vol 27 ◽  
pp. 100978
Author(s):  
M. Moscheni ◽  
M. Carr ◽  
S. Dulla ◽  
F. Maviglia ◽  
A. Meakins ◽  
...  
Keyword(s):  
Load Distribution ◽  
Heat Load ◽  
Radiative Heat ◽  
First Wall ◽  
The Eu

Visualization and flow boiling heat transfer of hydrocarbons in a horizontal tube

2013 ◽  
Author(s):  
Zhuqiang Yang ◽  
Qincheng Bi ◽  
Yong Guo ◽  
Zhaohui Liu ◽  
Jianguo Yan
Keyword(s):  
Heat Transfer ◽  
Boiling Heat Transfer ◽  
Flow Boiling ◽  
Horizontal Tube ◽  
Flow Boiling Heat Transfer

A new flow pattern map for flow boiling of R1234ze(E) in a horizontal tube

2018 ◽  
Vol 98 ◽  
pp. 24-35 ◽  
Author(s):  
Zhi-Qiang Yang ◽  
Gao-Fei Chen ◽  
Xiao-Ru Zhuang ◽  
Qing-Lu Song ◽  
Zeng Deng ◽  
...  
Keyword(s):  
Flow Pattern ◽  
Flow Boiling ◽  
Horizontal Tube ◽  
Flow Pattern Map
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