Condensation induced water hammer: Numerical prediction
Само за регистроване кориснике
2014
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Contact of steam and subcooled water in a pipe or a pressurized vessel leads to intensive condensation accompanied by a pressure drop in the volume of condensing steam and an acceleration of the surrounding water mass towards the steam volume, which can result in a severe water hammer and plant damage. This phenomenon is known as the condensation induced water hammer (CIWH). A one-fluid model is developed for the prediction of pressure surges during CIWH. It is shown that the reliable prediction of pressure surges strongly depends on the calculation of the condensation rate, transient friction and the water columnsteam interface tracking. Due to the lack of the CIWH condensation models, a new approach is derived. The one-fluid model predictions of pressure surges are compared with available measured data from a CIWH experimental facility and acceptable agreements are obtained. In addition, the ability of the developed model to simulate the water cannon event, which takes place during t...he steam drainage into the pool of subcooled water, is demonstrated. Experimentally observed considerable scattering of test data under the same conditions is related to the condensation rate and its dependence on the entrained droplets-steam interfacial area concentration in the vicinity of the water column head.
Кључне речи:
Water hammer / Steam / Modeling / CondensationИзвор:
Journal of Fluids and Structures, 2014, 50, 416-436Издавач:
- Academic Press Ltd- Elsevier Science Ltd, London
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.jfluidstructs.2014.07.003
ISSN: 0889-9746
WoS: 000343614000024
Scopus: 2-s2.0-84907689094
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Milivojević, Sanja AU - Stevanović, Vladimir AU - Maslovarić, Blaženka PY - 2014 UR - https://machinery.mas.bg.ac.rs/handle/123456789/1916 AB - Contact of steam and subcooled water in a pipe or a pressurized vessel leads to intensive condensation accompanied by a pressure drop in the volume of condensing steam and an acceleration of the surrounding water mass towards the steam volume, which can result in a severe water hammer and plant damage. This phenomenon is known as the condensation induced water hammer (CIWH). A one-fluid model is developed for the prediction of pressure surges during CIWH. It is shown that the reliable prediction of pressure surges strongly depends on the calculation of the condensation rate, transient friction and the water columnsteam interface tracking. Due to the lack of the CIWH condensation models, a new approach is derived. The one-fluid model predictions of pressure surges are compared with available measured data from a CIWH experimental facility and acceptable agreements are obtained. In addition, the ability of the developed model to simulate the water cannon event, which takes place during the steam drainage into the pool of subcooled water, is demonstrated. Experimentally observed considerable scattering of test data under the same conditions is related to the condensation rate and its dependence on the entrained droplets-steam interfacial area concentration in the vicinity of the water column head. PB - Academic Press Ltd- Elsevier Science Ltd, London T2 - Journal of Fluids and Structures T1 - Condensation induced water hammer: Numerical prediction EP - 436 SP - 416 VL - 50 DO - 10.1016/j.jfluidstructs.2014.07.003 ER -
@article{ author = "Milivojević, Sanja and Stevanović, Vladimir and Maslovarić, Blaženka", year = "2014", abstract = "Contact of steam and subcooled water in a pipe or a pressurized vessel leads to intensive condensation accompanied by a pressure drop in the volume of condensing steam and an acceleration of the surrounding water mass towards the steam volume, which can result in a severe water hammer and plant damage. This phenomenon is known as the condensation induced water hammer (CIWH). A one-fluid model is developed for the prediction of pressure surges during CIWH. It is shown that the reliable prediction of pressure surges strongly depends on the calculation of the condensation rate, transient friction and the water columnsteam interface tracking. Due to the lack of the CIWH condensation models, a new approach is derived. The one-fluid model predictions of pressure surges are compared with available measured data from a CIWH experimental facility and acceptable agreements are obtained. In addition, the ability of the developed model to simulate the water cannon event, which takes place during the steam drainage into the pool of subcooled water, is demonstrated. Experimentally observed considerable scattering of test data under the same conditions is related to the condensation rate and its dependence on the entrained droplets-steam interfacial area concentration in the vicinity of the water column head.", publisher = "Academic Press Ltd- Elsevier Science Ltd, London", journal = "Journal of Fluids and Structures", title = "Condensation induced water hammer: Numerical prediction", pages = "436-416", volume = "50", doi = "10.1016/j.jfluidstructs.2014.07.003" }
Milivojević, S., Stevanović, V.,& Maslovarić, B.. (2014). Condensation induced water hammer: Numerical prediction. in Journal of Fluids and Structures Academic Press Ltd- Elsevier Science Ltd, London., 50, 416-436. https://doi.org/10.1016/j.jfluidstructs.2014.07.003
Milivojević S, Stevanović V, Maslovarić B. Condensation induced water hammer: Numerical prediction. in Journal of Fluids and Structures. 2014;50:416-436. doi:10.1016/j.jfluidstructs.2014.07.003 .
Milivojević, Sanja, Stevanović, Vladimir, Maslovarić, Blaženka, "Condensation induced water hammer: Numerical prediction" in Journal of Fluids and Structures, 50 (2014):416-436, https://doi.org/10.1016/j.jfluidstructs.2014.07.003 . .