  |
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
(Received 15.12.2011)
Appeared in Kerntechnik 2012/02, Page 101-107
Direct link: http://www.nuclear-engineering-journal.com/KT110238
Pay content
Slug modeling with 1D two-fluid model [301 KB]
This service is free for subscribers of Kerntechnik.
References
1 Tiselj, I.; Horvat, A.; Cerne, G.; Gale, J.; Parzer, I.; Mavko, B.; Giot, M.; Seynhaeve, J. M.; Kucienska, B.; Lemonnier, H.: WAHA3 Code Manual. Jožef Stefan Institute Report, IJS-DP-8841, 2004.
2 Carlson, K. E.; Riemke, R. A.; Rouhani, S. Z.; Shumway, R. W.;Weaver, W. L.: RELAP5/MOD3 Code Manual. Vol. 1–7, NUREG/CR-5535, EG&G Idaho, Idaho Falls, (1990).
3 Bestion, D.: The Physical closure laws in the CATHARE code. Nuclear Engineering and Design 124 (1990) 229–245.
4 Taitel, Y.; Dukler, A. E.: A model for predictiong flow regime transitions in horizontal and near horizontal gas-liquid flows. AICHE Journal 22 (1976) 47 –55.
5 Lin, P. Y.; Hanratty, T. J.: Prediction of the initiation of slugs with linear stability theory. International Journal of Multiphase Flow 12 (1986) 79–98.
6 Issa, R. I.; Kempf, M. H. W.: Simulation of slug flow in horizontal and nearly horizontal pipes with the two-fluid model. International Journal of Multiphase Flow 29 (2003) 69–96.
7 Tiselj, I.; Martin, C. S.: Two-fluid model for 1D simulations of water hammer induced by condensation of hot vapor on the horizontally stratified flow. 7th International Conference on Multiphase Flow, ICMF 2010, Tampa, FL USA, May 30-June 4, 2010.
8 Dobson M. K.; Chato J. C.: Condensation in smooth horizontal tubes, Journal of Heat Transfer – ASME 120, (1998) 193–213.
9 Bartosiewicz, Y.; Seynhaeve, J.-M.; Vallée, C.; Höhne, T.; Laviéville, J.-M.: Modeling free surface flows relevant to a PTS scenario: Comparison between experimental data and three RANS based CFD-codes. Comments on the CFD-experiment integration and best practice guideline. Nuclear Engineering and Design 240 (2010) 2375–2381.
10 Vallée, C.; Lucas, D.; Beyer, M.; Pietruske, H.; Schütz, P.; Carl, H.: Experimental CFD grade data for stratified two-phase flows. Nuclear Engineering and Design 240 (2010) 2347–2356.
11 Griffith, P.: Screening Reactor Steam/Water Piping Systems for Water Hammer, NUREG/CR-6519, US-NRC, (1996).
12 Štrubelj, L.; Ézsol, G.; Tiselj, I.: Direct contact condensation induced transition from stratified to slug flow. Nuclear Engineering and Design 240 (2010) 266–274, doi: 10.1016/j.nucengdes.2008. 12.004, 2010.
13 Martin, C. S.; Brown, R.; Brown, J.: Condensation-Induced Hydraulic Shock Laboratory Study. ASHRAE 970-RP, June 2007.
14 Bjorge, R. W.; Griffith, P.: Initiation of Waterhammer in horizontal and nearly horizontal pipes containing steam and subcooled water. ASME Journal of Heat Transfer 106 (1984) 835–840.
15 Martin, C. S.: Condensation-induced water hammer in a horizontal refrigerant pipe. Proceedings of BHR Pressure Surges (2004) 581–589.
16 Tiselj, I.; Petelin, S.: Modelling of Two-Phase Flow with Second-Order Accurate Scheme. Journal of Computational Physics 136 (1997) 503–521.
17 Cizelj, L.; Koncar, B.; Leskovar, M.: Vulnerability of a partially flooded PWR reactor cavity to a steam explosion. Nuclear Engineering and Design 236 (2006) 1617–1627.
|
| © 2013 by Carl Hanser Verlag |
Navigation
- Current issue
- Volumes
- Search
- Sponsored articles
- Top 20 Downloads
Subscriber Support
abo-service@hanser.de
For authors:
Information on article submission
- Volumes
- Search
- Sponsored articles
- Top 20 Downloads
Subscriber Support
abo-service@hanser.de
For authors:
Information on article submission
Document number