scholarly journals CFD modelling of wall steam condensation by a two-phase flow approach

2011 ◽  
Vol 241 (11) ◽  
pp. 4445-4455 ◽  
Author(s):  
S. Mimouni ◽  
A. Foissac ◽  
J. Lavieville
2016 ◽  
Vol 94 (5) ◽  
pp. 872-885 ◽  
Author(s):  
Madhavi V. Sardeshpande ◽  
Barlev Raymond ◽  
Vivek V. Ranade

Author(s):  
Carlos Peña-Monferrer ◽  
Alberto Passalacqua ◽  
Sergio Chiva ◽  
José L. Muñoz-Cobo

An Eulerian-Eulerian approach was used to model adiabatic bubbly flow with CFD techniques. The OpenFOAM® solver twoPhaseEulerFoam was modified to predict upward bubbly flow in vertical pipes. Interfacial force and bubble induced turbulence models are studied and implemented. The population balance equation included in the two-fluid model is solved to simulate a polydisperse flow with the quadrature method of moments approximation. Two-phase flow experiments with different superficial velocities of gas and water at different temperatures are used to validate the solver. Radial distributions of void fraction, air and water velocities, Sauter mean diameter and turbulence intensity are compared with the computational results. The computational results agree well with the experiments showing the capability of the solver to predict two-phase flow characteristics.


Author(s):  
Fakorede D. ◽  
Nyong O. E. ◽  
Ifere M. ◽  
Bepaye A ◽  
Igbong D.I ◽  
...  

Author(s):  
A. Odaymet ◽  
H. Louahlia-Gualous

Experimental investigations of a two-phase flow were conducted to study heat transfer and various flow patterns of steam condensation in two different microchannels. Microchannels have a rectangular cross-section with hydraulic diameter of 305μm (depth of 310μm and width of 300μm) and 410.5μm (depth of 312μm and width of 600μm). The length of each microchannel is of 50 mm. The silicon microchannel is covered with a transparent thin Pyrex plate to view different flow patterns. Microthermocouples (K-type, 20μm) were placed in rectangular silicon grooves. Measurements are carried out for different inlet pressures and flow rates of steam while the outlet pressure of the microchannel is kept at atmospheric pressure. Plug/slug flow patterns are observed in the microchannel for different mass fluxes. Local surface temperatures along the microchannel corresponding of each two-phase flow structure are measured and analyzed.


2019 ◽  
Vol 2019.25 (0) ◽  
pp. 18B06
Author(s):  
Yuki NAKAMURA ◽  
Kota FUJIWARA ◽  
Wataru KIKUCHI ◽  
Tomohisa YUASA ◽  
Shimpei SAITO ◽  
...  

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