Numerical prediction of critical heat flux in pool boiling with the two-fluid model
Само за регистроване кориснике
2011
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Three-dimensional numerical simulations of the atmospheric saturated pool boiling are performed with the aim of predicting the critical heat flux. The two-phase mixture in pool boiling is described with the transient two-fluid model. The transient heat conduction in the horizontal heated wall is also solved. Dynamics of vapor generation on the heated wall is modeled through the density of nucleation sites and the bubble residence time on the wall. The heater's surface is divided into zones, which number per unit area equals the density of nucleation sites, while the location of nucleation site within each zone is determined by a random function. The results show a replenishment of the heater's surface with water and surface wetting for lower heat fluxes, while heater's surface dry-out is predicted at critical heat flux values. Also, it is shown that the decrease of nucleation site density leads to the reduction of critical heat flux values. Obtained results of critical heat flux are in... good agreement with available measured data. The presented approach is original regarding both the application of the two-fluid two-phase model for the prediction of boiling crisis in pool boiling and the defined boundary conditions at the heated wall surface.
Кључне речи:
Pool boiling / Modeling / Critical heat fluxИзвор:
International Journal of Heat and Mass Transfer, 2011, 54, 15-16, 3296-3303Издавач:
- Pergamon-Elsevier Science Ltd, Oxford
Финансирање / пројекти:
- Напредне аналитичке, нумеричке и методе анализе примењене механике флуида и комплексних система (RS-MESTD-Basic Research (BR or ON)-174014)
DOI: 10.1016/j.ijheatmasstransfer.2011.03.057
ISSN: 0017-9310
WoS: 000291895100020
Scopus: 2-s2.0-79956194189
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Pezo, Milada AU - Stevanović, Vladimir PY - 2011 UR - https://machinery.mas.bg.ac.rs/handle/123456789/1224 AB - Three-dimensional numerical simulations of the atmospheric saturated pool boiling are performed with the aim of predicting the critical heat flux. The two-phase mixture in pool boiling is described with the transient two-fluid model. The transient heat conduction in the horizontal heated wall is also solved. Dynamics of vapor generation on the heated wall is modeled through the density of nucleation sites and the bubble residence time on the wall. The heater's surface is divided into zones, which number per unit area equals the density of nucleation sites, while the location of nucleation site within each zone is determined by a random function. The results show a replenishment of the heater's surface with water and surface wetting for lower heat fluxes, while heater's surface dry-out is predicted at critical heat flux values. Also, it is shown that the decrease of nucleation site density leads to the reduction of critical heat flux values. Obtained results of critical heat flux are in good agreement with available measured data. The presented approach is original regarding both the application of the two-fluid two-phase model for the prediction of boiling crisis in pool boiling and the defined boundary conditions at the heated wall surface. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - International Journal of Heat and Mass Transfer T1 - Numerical prediction of critical heat flux in pool boiling with the two-fluid model EP - 3303 IS - 15-16 SP - 3296 VL - 54 DO - 10.1016/j.ijheatmasstransfer.2011.03.057 ER -
@article{ author = "Pezo, Milada and Stevanović, Vladimir", year = "2011", abstract = "Three-dimensional numerical simulations of the atmospheric saturated pool boiling are performed with the aim of predicting the critical heat flux. The two-phase mixture in pool boiling is described with the transient two-fluid model. The transient heat conduction in the horizontal heated wall is also solved. Dynamics of vapor generation on the heated wall is modeled through the density of nucleation sites and the bubble residence time on the wall. The heater's surface is divided into zones, which number per unit area equals the density of nucleation sites, while the location of nucleation site within each zone is determined by a random function. The results show a replenishment of the heater's surface with water and surface wetting for lower heat fluxes, while heater's surface dry-out is predicted at critical heat flux values. Also, it is shown that the decrease of nucleation site density leads to the reduction of critical heat flux values. Obtained results of critical heat flux are in good agreement with available measured data. The presented approach is original regarding both the application of the two-fluid two-phase model for the prediction of boiling crisis in pool boiling and the defined boundary conditions at the heated wall surface.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "International Journal of Heat and Mass Transfer", title = "Numerical prediction of critical heat flux in pool boiling with the two-fluid model", pages = "3303-3296", number = "15-16", volume = "54", doi = "10.1016/j.ijheatmasstransfer.2011.03.057" }
Pezo, M.,& Stevanović, V.. (2011). Numerical prediction of critical heat flux in pool boiling with the two-fluid model. in International Journal of Heat and Mass Transfer Pergamon-Elsevier Science Ltd, Oxford., 54(15-16), 3296-3303. https://doi.org/10.1016/j.ijheatmasstransfer.2011.03.057
Pezo M, Stevanović V. Numerical prediction of critical heat flux in pool boiling with the two-fluid model. in International Journal of Heat and Mass Transfer. 2011;54(15-16):3296-3303. doi:10.1016/j.ijheatmasstransfer.2011.03.057 .
Pezo, Milada, Stevanović, Vladimir, "Numerical prediction of critical heat flux in pool boiling with the two-fluid model" in International Journal of Heat and Mass Transfer, 54, no. 15-16 (2011):3296-3303, https://doi.org/10.1016/j.ijheatmasstransfer.2011.03.057 . .