Simulations of condensation-induced water hammer with onedimensional two-fluid model requires explicit modeling of slug formation, slug propagation, and in some cases slug decay. Stratified flow correlations that are more or less well known in 1D two-fluid models, are crucial for accurate description of the initial phase of the slug formation and slug propagation. Slug formation means transition to other flow regime that requires different set of correlations. To use such two-fluid model for condensation induced water hammer simulations, a single slug must be explicitly recognized and captured. In the present work two cases of condensation-induced water hammer simulations performed with WAHA code, are described and discussed: injection of cold liquid into horizontal pipe filled with steam and injection of hot steam into horizontal pipe partially filled with cold liquid.
From I. Tiselj | C. Samuel Martin
Appeared in Kerntechnik 2012/02, Page 101-107
Direct link: http://www.nuclear-engineering-journal.com/KT110238
Slug modeling with 1D two-fluid model [301 KB]
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