Numerical investigation of nucleate pool boiling heat transfer
Апстракт
Multi-dimensional numerical simulation of the atmospheric saturated pool boiling is performed. The applied modelling and numerical methods enable a full representation of the liquid and vapour two-phase mixture behaviour on the heated surface, with included prediction of the swell level and heated wall temperature field. In this way the integral behaviour of nucleate pool boiling is simulated. The micro conditions of bubble generation at the heated wall surface are modelled by the bubble nucleation site density, the liquid wetting contact angle and the bubble grow time. The bubble nucleation sites are randomly located within zones of equal size, where the number of zones equals the nucleation site density. The conjugate heat transfer from the heated wall to the liquid is taken into account in wetted heated wall areas around bubble nucleation sites. The boiling curve relation between the heat flux and the heated wall surface temperature in excess of the saturation temperature is predict...ed for the pool boiling conditions reported in the literature and a good agreement is achieved with experimentally measured data. The influence of the nucleation site density on the boiling curve characteristic is confirmed. In addition, the influence of the heat flux intensity on the spatial effects of vapour generation and two-phase flow are shown, such as the increase of the swell level position and the reduced wetting of the heated wall surface by the heat flux increase.
Кључне речи:
pool boiling / modelling / heat fluxИзвор:
Thermal Science, 2016, 20, S1301-S1312Издавач:
- Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
Финансирање / пројекти:
- Повећање енергетске и еколошке ефикасности процеса у ложишту за угљени прах и оптимизација излазне грејне површине енергетског парног котла применом сопствених софтверских алата (RS-MESTD-Technological Development (TD or TR)-33018)
- Напредне аналитичке, нумеричке и методе анализе примењене механике флуида и комплексних система (RS-MESTD-Basic Research (BR or ON)-174014)
DOI: 10.2298/TSCI160404276S
ISSN: 0354-9836
WoS: 000389964200011
Scopus: 2-s2.0-85011418934
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Stojanović, Andrijana AU - Stevanović, Vladimir AU - Petrović, Milan M. AU - Živković, Dragoljub PY - 2016 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2290 AB - Multi-dimensional numerical simulation of the atmospheric saturated pool boiling is performed. The applied modelling and numerical methods enable a full representation of the liquid and vapour two-phase mixture behaviour on the heated surface, with included prediction of the swell level and heated wall temperature field. In this way the integral behaviour of nucleate pool boiling is simulated. The micro conditions of bubble generation at the heated wall surface are modelled by the bubble nucleation site density, the liquid wetting contact angle and the bubble grow time. The bubble nucleation sites are randomly located within zones of equal size, where the number of zones equals the nucleation site density. The conjugate heat transfer from the heated wall to the liquid is taken into account in wetted heated wall areas around bubble nucleation sites. The boiling curve relation between the heat flux and the heated wall surface temperature in excess of the saturation temperature is predicted for the pool boiling conditions reported in the literature and a good agreement is achieved with experimentally measured data. The influence of the nucleation site density on the boiling curve characteristic is confirmed. In addition, the influence of the heat flux intensity on the spatial effects of vapour generation and two-phase flow are shown, such as the increase of the swell level position and the reduced wetting of the heated wall surface by the heat flux increase. PB - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd T2 - Thermal Science T1 - Numerical investigation of nucleate pool boiling heat transfer EP - S1312 SP - S1301 VL - 20 DO - 10.2298/TSCI160404276S ER -
@article{ author = "Stojanović, Andrijana and Stevanović, Vladimir and Petrović, Milan M. and Živković, Dragoljub", year = "2016", abstract = "Multi-dimensional numerical simulation of the atmospheric saturated pool boiling is performed. The applied modelling and numerical methods enable a full representation of the liquid and vapour two-phase mixture behaviour on the heated surface, with included prediction of the swell level and heated wall temperature field. In this way the integral behaviour of nucleate pool boiling is simulated. The micro conditions of bubble generation at the heated wall surface are modelled by the bubble nucleation site density, the liquid wetting contact angle and the bubble grow time. The bubble nucleation sites are randomly located within zones of equal size, where the number of zones equals the nucleation site density. The conjugate heat transfer from the heated wall to the liquid is taken into account in wetted heated wall areas around bubble nucleation sites. The boiling curve relation between the heat flux and the heated wall surface temperature in excess of the saturation temperature is predicted for the pool boiling conditions reported in the literature and a good agreement is achieved with experimentally measured data. The influence of the nucleation site density on the boiling curve characteristic is confirmed. In addition, the influence of the heat flux intensity on the spatial effects of vapour generation and two-phase flow are shown, such as the increase of the swell level position and the reduced wetting of the heated wall surface by the heat flux increase.", publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd", journal = "Thermal Science", title = "Numerical investigation of nucleate pool boiling heat transfer", pages = "S1312-S1301", volume = "20", doi = "10.2298/TSCI160404276S" }
Stojanović, A., Stevanović, V., Petrović, M. M.,& Živković, D.. (2016). Numerical investigation of nucleate pool boiling heat transfer. in Thermal Science Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 20, S1301-S1312. https://doi.org/10.2298/TSCI160404276S
Stojanović A, Stevanović V, Petrović MM, Živković D. Numerical investigation of nucleate pool boiling heat transfer. in Thermal Science. 2016;20:S1301-S1312. doi:10.2298/TSCI160404276S .
Stojanović, Andrijana, Stevanović, Vladimir, Petrović, Milan M., Živković, Dragoljub, "Numerical investigation of nucleate pool boiling heat transfer" in Thermal Science, 20 (2016):S1301-S1312, https://doi.org/10.2298/TSCI160404276S . .