Structure of a turbulent bubbly flow and heat transfer in a vertical tube

被引：0
作者：
P. D. Lobanov
M. A. Pakhomov
V. I. Terekhov
P. K. Das
机构：
[1] SB RAS,Kutateladze Institute of Thermophysics
[2] Indian Institute of Technology,undefined
来源：
Thermophysics and Aeromechanics | 2020年 / 27卷
关键词：
bubbly polydisperse flow; tube; bubble spreading; heat transfer; wall friction; delta-approximation method; turbulence;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The results of numerical simulation of the flow structure and heat transfer in a vertical polydispersed bubbly flow are presented. The mathematical model is based on the Euler approach taking into account the effect of bubbles on the mean characteristics and turbulence of the carrier phase. The polydispersed distribution of bubbles size in a two-phase flow is modeled by the method of delta approximation considering the process of bubble break-up and coalescence. Carrier phase (fluid) turbulence is predicted using the Reynolds stress transport model. The simulation results showed good agreement with the experimental data presented in the literature. The measured and predicted thermal-hydraulic parameter distribution indicates that in a turbulent bubbly flow, the wall friction increase is greater than heat transfer enhancement.
引用
收藏
页码：565 / 571
页数：6
相关论文
共 45 条
[1]  
Carrica PM(1999)A polydisperse model for bubbly two-phase flow around a surface ship Inter. J. Multiphase Flow 25 257-305
[2]  
Drew DA(2009)Transition of bubbly flow in vertical tubes: new criteria through CFD simulation ASME J. Fluids Engng 131 091303-1–091303-12
[3]  
Bonetto F(2009)CFD modelling of polydispersed bubbly two-phase flow around an obstacle Nucl. Engng Des. 239 2372-2381
[4]  
Lahey RT(2018)Numerical simulation of the turbulent upward flow of a gas-liquid bubble mixture in a vertical pipe: comparison with experimental data High Temperature 56 61-69
[5]  
Das AK(2012)Development of a diffusion-inertia model for calculating bubbly turbulent flows: isothermal polydispersed flow in a vertical pipe High Temperature 50 621-630
[6]  
Das PK(2004)Simulation of the distribution of bubbles in a turbulent liquid using a diffusion-inertia method High Temperature 42 111-118
[7]  
Thome JR(2019)Modeling of flow structure, bubble distribution, and heat transfer in polydispersed turbulent bubbly flow using the method of delta function approximation J. Engng Thermophys. 28 453-471
[8]  
Krepper E(2008)Revisiting URANS computations of the backward-facing step flow using second moment closures. Influence of the numerics Flow, Turbulence, and Combust. 81 395-410
[9]  
Beyer M(1990)The prediction of two-phase turbulence and phase distribution using a Reynolds stress model ASME J. Fluids Engng 112 107-113
[10]  
Frank T(1999)Method for determining the dynamic parameters of coagulating systems Doklady Physics 366 341-344
12345