CFD Modeling of Wall Steam Condensation : Two-Phase Flow Approach versus Homogeneous Flow Approach
Joint Authors
Ouraou, Mehdi
Mechitoua, Namane
Hassanaly, M.
Mimouni, Stéphane
Foissac, A.
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-09-05
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
The present work is focused on the condensation heat transfer that plays a dominant role in many accident scenarios postulated to occur in the containment of nuclear reactors.
The study compares a general multiphase approach implemented in NEPTUNE_CFD with a homogeneous model, of widespread use for engineering studies, implemented in Code_Saturne.
The model implemented in NEPTUNE_CFD assumes that liquid droplets form along the wall within nucleation sites.
Vapor condensation on droplets makes them grow.
Once the droplet diameter reaches a critical value, gravitational forces compensate surface tension force and then droplets slide over the wall and form a liquid film.
This approach allows taking into account simultaneously the mechanical drift between the droplet and the gas, the heat and mass transfer on droplets in the core of the flow and the condensation/evaporation phenomena on the walls.
As concern the homogeneous approach, the motion of the liquid film due to the gravitational forces is neglected, as well as the volume occupied by the liquid.
Both condensation models and compressible procedures are validated and compared to experimental data provided by the TOSQAN ISP47 experiment (IRSN Saclay).
Computational results compare favorably with experimental data, particularly for the Helium and steam volume fractions.
American Psychological Association (APA)
Mimouni, Stéphane& Mechitoua, Namane& Foissac, A.& Hassanaly, M.& Ouraou, Mehdi. 2011. CFD Modeling of Wall Steam Condensation : Two-Phase Flow Approach versus Homogeneous Flow Approach. Science and Technology of Nuclear Installations،Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-509987
Modern Language Association (MLA)
Mimouni, Stéphane…[et al.]. CFD Modeling of Wall Steam Condensation : Two-Phase Flow Approach versus Homogeneous Flow Approach. Science and Technology of Nuclear Installations No. 2011 (2011), pp.1-10.
https://search.emarefa.net/detail/BIM-509987
American Medical Association (AMA)
Mimouni, Stéphane& Mechitoua, Namane& Foissac, A.& Hassanaly, M.& Ouraou, Mehdi. CFD Modeling of Wall Steam Condensation : Two-Phase Flow Approach versus Homogeneous Flow Approach. Science and Technology of Nuclear Installations. 2011. Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-509987
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-509987