TY  - JOUR
AU  - Vijaya Kumar, G.
AU  - Cammiade, Liam M. F.
AU  - Kelm, Stephan
AU  - Arul Prakash, K.
AU  - Groß, Eva M.
AU  - Allelein, Hans-Josef
AU  - Kneer, Reinhold
AU  - Rohlfs, Wilko
TI  - Implementation of a CFD model for wall condensation in the presence of non-condensable gas mixtures
JO  - Applied thermal engineering
VL  - 187
SN  - 1359-4311
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2021-03414
SP  - 116546 -
PY  - 2021
AB  - In this paper, we discuss a CFD model to predict vapor condensation on walls in the presence of non-condensable gases, with a specific focus on large scale applications, such as accidental flows in a nuclear reactor containment. It is conclusive from the previous works that the heat and mass transport resistance due to the diffusion boundary layer in the gas phase overwhelms the liquid film thermal resistance. Therefore, the two-phase wall condensation phenomenon is treated with a single-phase (gas) model. For the numerical implementation, the containmentFOAM CFD package, based on OpenFOAM is used. For the first time, the model implementation is discussed for arbitrary multi-component mixtures, and performances of two commonly used approaches – Volumetric source terms and Face-fluxes – are compared; the Face-flux model proved to be more accurate, computationally cheaper, and less grid-dependent. Concluding, the Face-flux approach was validated against the experimental database for forced convection flows, obtained at the SETCOM facility in Forschungzentrum Jülich, Germany. The results demonstrate the model’s predictiveness and robustness for a wide range of cases in the forced convection regime.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000635626600009
DO  - DOI:10.1016/j.applthermaleng.2021.116546
UR  - https://juser.fz-juelich.de/record/894830
ER  -