Academic Journal
Computational fluid dynamics for sub-atmospheric pressure analysis in pipe drainage
| العنوان: | Computational fluid dynamics for sub-atmospheric pressure analysis in pipe drainage |
|---|---|
| المؤلفون: | Besharat, Mohsen, Coronado-Hernández, Oscar Enrique, Fuertes-Miquel, Vicente S., Viseu, Maria Teresa, Ramos, Helena M. |
| المساهمون: | Universitat Politècnica de València. Departamento de Ingeniería Hidráulica y Medio Ambiente - Departament d'Enginyeria Hidràulica i Medi Ambient, Fundação para a Ciência e a Tecnologia, Portugal |
| بيانات النشر: | Taylor & Francis |
| سنة النشر: | 2019 |
| المجموعة: | Universitat Politécnica de Valencia: RiuNet / Politechnical University of Valencia |
| مصطلحات موضوعية: | Computational fluid dynamics (CFD), Emptying process, Entrapped air simulation, Experimental set-up, Realizable k-epsilon turbulence model, Sub-atmospheric pressure, Volume of fluid (VOF) multiphase model, MECANICA DE FLUIDOS |
| الوصف: | [EN] The occurrence of sub-atmospheric pressure in the drainage of pipelines containing an air pocket has been known as a major cause of several serious problems. Accordingly, some system malfunction and pipe buckling events have been reported in the literature. This case has been studied experimentally and numerically in the current research considering objectives for a better understanding of: (i) the emptying process, (ii) the main parameters influencing the drainage, and (iii) the air-water interface deformation. Also, this research demonstrates the ability of a computational fluid dynamic (CFD) model in the simulation of this event. The effects of the air pocket size, the percentage and the time of valve opening on the pressure variation have been studied. Results show the pipeline drainage mostly occurs due to backflow air intrusion. The worst case scenario is associated with a fast valve opening when a tiny air pocket exists in the pipeline. ; This work is supported by Fundacao para a Ciencia e Tecnologia (FCT), Portugal [grant number PD/BD/114459/2016]. ; Besharat, M.; Coronado-Hernández, OE.; Fuertes-Miquel, VS.; Viseu, MT.; Ramos, HM. (2019). Computational fluid dynamics for sub-atmospheric pressure analysis in pipe drainage. Journal of Hydraulic Research. 58(4):553-565. https://doi.org/10.1080/00221686.2019.1625819 ; S ; 553 ; 565 ; 58 ; 4 ; ANSYS FLUENT R19.0 academic [Computer software]. ANSYS, Canonsburg, PA. Retrieved from https://www.ansys.com/academic/free-student-products ; Apollonio, C., Balacco, G., Fontana, N., Giugni, M., Marini, G., & Piccinni, A. (2016). Hydraulic Transients Caused by Air Expulsion During Rapid Filling of Undulating Pipelines. Water, 8(1), 25. doi:10.3390/w8010025 ; Benjamin, T. B. (1968). Gravity currents and related phenomena. Journal of Fluid Mechanics, 31(2), 209-248. doi:10.1017/s0022112068000133 ; Besharat, M., Coronado-Hernández, O. E., Fuertes-Miquel, V. S., Viseu, M. T., & Ramos, H. M. (2018). Backflow air and pressure analysis in emptying a pipeline ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 0022-1686 |
| Relation: | Journal of Hydraulic Research; info:eu-repo/grantAgreement/FCT//PD%2FBD%2F114459%2F2016/; https://doi.org/10.1080/00221686.2019.1625819; urn:issn:0022-1686; http://hdl.handle.net/10251/165607 |
| DOI: | 10.1080/00221686.2019.1625819 |
| الاتاحة: | http://hdl.handle.net/10251/165607 https://doi.org/10.1080/00221686.2019.1625819 |
| Rights: | http://rightsstatements.org/vocab/InC/1.0/ ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.801C040D |
| قاعدة البيانات: | BASE |
| تدمد: | 00221686 |
|---|---|
| DOI: | 10.1080/00221686.2019.1625819 |