TY - JOUR
T1 - Two-phase flow boiling in 19 mm tube
T2 - Experiments and CFD modelling
AU - Sardeshpande, Madhavi V.
AU - Raymond, Barlev
AU - Ranade, Vivek V.
N1 - Publisher Copyright:
© 2016 Canadian Society for Chemical Engineering
PY - 2016/5/1
Y1 - 2016/5/1
N2 - Boiling flows are encountered in a wide range of industrial applications such as boilers, nuclear reactors, electronic cooling, and various types of chemical reactors. Heat transfer coefficients, flow boiling regimes, flow instabilities, pressure drops, and conditions like dry-out are some of the key issues in every boiling flow study. It is observed that a limited experimental database is available for the 19 mm ID channel diameter, i.e. a typical tube diameter of steam generator. Therefore, in the present work, the experimental setup was designed for studying boiling flows in a 19 mm ID tube in such a way that different flow regimes occurring in a steam generator tube (from pre-heating of sub-cooled water to dry-out) could be investigated by varying inlet conditions. The reported results cover a reasonable range: 8–27 kW/m2and 2.9–5.9 kg/m2· s heat and mass flux conditions, respectively. A basic computational flow model was also developed to facilitate interpretation of the obtained data. The presented design of the experimental setup and the approach of mimicking different types of steam generator tubes as well as presented experimental and simulated results are useful for gaining insight into complex boiling flows in tubes, and provide a sound basis for further work in this area.
AB - Boiling flows are encountered in a wide range of industrial applications such as boilers, nuclear reactors, electronic cooling, and various types of chemical reactors. Heat transfer coefficients, flow boiling regimes, flow instabilities, pressure drops, and conditions like dry-out are some of the key issues in every boiling flow study. It is observed that a limited experimental database is available for the 19 mm ID channel diameter, i.e. a typical tube diameter of steam generator. Therefore, in the present work, the experimental setup was designed for studying boiling flows in a 19 mm ID tube in such a way that different flow regimes occurring in a steam generator tube (from pre-heating of sub-cooled water to dry-out) could be investigated by varying inlet conditions. The reported results cover a reasonable range: 8–27 kW/m2and 2.9–5.9 kg/m2· s heat and mass flux conditions, respectively. A basic computational flow model was also developed to facilitate interpretation of the obtained data. The presented design of the experimental setup and the approach of mimicking different types of steam generator tubes as well as presented experimental and simulated results are useful for gaining insight into complex boiling flows in tubes, and provide a sound basis for further work in this area.
KW - CFD
KW - flow regimes
KW - two-phase flow boiling
KW - vapour quality
UR - http://www.scopus.com/inward/record.url?scp=84962301243&partnerID=8YFLogxK
U2 - 10.1002/cjce.22455
DO - 10.1002/cjce.22455
M3 - Article
AN - SCOPUS:84962301243
SN - 0008-4034
VL - 94
SP - 872
EP - 885
JO - The Canadian Journal of Chemical Engineering
JF - The Canadian Journal of Chemical Engineering
IS - 5
ER -