Investigation of Porous Structures for Protection of Pipelines against Water Hammer به‌کارگيري ساختارهاي متخلخل براي حفاظت خط لوله در مقابل ضربه قوچ
Journal Title: آب و فاضلاب - Year 2018, Vol 29, Issue 5
Abstract
Abstract This study was initiated to investigate the use of a porous structure in some parts of a pipeline to protect it against water hammer pressure wave. This study was inspired by the utilization of porous breakwaters which are commonly used to protect coastal areas. To fulfill the main objective of the study, different porous structures were installed in an experimental pipeline fed by a pump. The water hammer was induced by an upstream valve. The homogeneous porous structures were made up of spherical beads or broken rocks in different sizes and filled them in pipes with different lengths and subject them under different water hammer conditions. Results obtained from this study showed that during the first cycle of water hammer wave, the ratio of maximum pressure downstream of porous structure to the corresponding value in upstream is between 0.6 to 0.95, respectively. This pressure difference decreased drastically in next cycles. Generally, it can be conclude that an insignificant protection gained from a porous structure in downstream from water hammer; however, the overall pressure fluctuations in the pipe filled with a porous structure was less than a fully open pipe under the same discharge rates and the same water hammer condition. The results showed that porous structures in particular condition could be used to control pressure oscillations in piplines and it is proposed to consider practical aspects of this idea in future researches.
Authors and Affiliations
pouria Asiaban, Manouchehr Fathi Moghadam
Keywords
Related Articles
- EP ID EP463344
- DOI 10.22093/wwj.2017.75224.2341
- Views 105
- Downloads 0
Bogle, G. V., 1997, "Stream velocity profiles and longitudinal dispersion", Journal of Hydaulic Engineering, 123(9), 816-820. Huang, J., Weber, L. J., & Lai, Y.G., 2002, "Three-dimensional numerical study of flows in open-channel junctions", Journal of Hydraulic Engineering, 128(3), 268-280. Cope, R.C. & Hanks, R. W., 1972, "Transitional flow in isocceles transitional ducts", Ind. Eng. Chem. Fund,
Technical and Economic Evaluation of the Use of Variable Speed Pumps in the Backwashing of Rapid Sand Filters (A Case Study) S. Azodi1, M. Fazeli2 1. MSc Student of Civil and Water & Wastewater Engineering, Faculty o...
مدل‌سازی استخراج فنل از فاضلاب با استفاده از روش‌های هوشمند
Modeling of Phenol Extraction from Wastewater Using Intelligent Techniques Abstract In this study, the extraction of phenol from wastewater was simulated using intelligent methods which include multi-layer perceptron,...
بررسی کارايی فرايند اکسيداسيون پيشرفتهH2O2/ZnO در حذف آنتی‌بيوتيک سفترياکسون از محيط‌های آبی Efficiency of Advanced H2O2/ZnO Oxidation Process in Ceftriaxone Antibiotic Removal from Aqueous Solutions
Efficiency of Advanced H2O2/ZnO Oxidation Process in Ceftriaxone Antibiotic Removal from Aqueous Solutions Abstract A major concern about pharmaceutical pollution is the presence of antibiotics in water resources throu...
جذب سرب از محلول‌های آبی به‌وسیله سپیولیت و بنتونیت اصلاح‌شده با بیوپلیمر کیتوزان: همدما و سینتیک
Sorption of Lead (Pb) from Aqueous Solutions by Sepiolite and Bentonite Modified with Chitosan Biopolymers: Isotherms and Kinetics Abstract In this study, sepiolite and bentonite clay minerals were modified with a natur...
پهنه‌بندي کيفي آبخوان شهر بابک از منظر خورندگي و رسوب‌گذاري، تناسب کشاورزي، شرب و آبياري تحت فشار Qualitative Zoning of Shahr-e-Babak Aquifer Based on its Corrosiveness, Sedimentation, and Applicability for Agricultural, Drinking, and Pressure Irrigation Uses
Qualitative Zoning of Shahr-e-Babak Aquifer Based on its Corrosiveness, Sedimentation, and Applicability for Agricultural, Drinking, and Pressure Irrigation Uses Water quality management in groundwater aquifers requires...