@article { author = {Abbasi, A. and Sabbagh-Yazdi, S.R.}, title = {Upwind Finite Volume Solution of Water Hammer in Pipes without Column Separation in Unsteady Friction Model}, journal = {Journal of Hydraulics}, volume = {3}, number = {3}, pages = {59-65}, year = {2008}, publisher = {Iranian Hydraulic Association}, issn = {2345-4237}, eissn = {2645-8063}, doi = {10.30482/jhyd.2008.85474}, abstract = {The waves resulting from instantaneous and complete valve-closure in pressurized pipe systems,propagate upstream and/or downstream in the hydraulic system .The pressure (head) and velocity ofthe flow (waves) are important parameters in the design of pipeline systems. A simple and efficientapproximation to the Vardy–Brown unsteady friction equation is implemented within a FVM solutionfor unsteady pipe flows. The model is compared with measured data and numerical data produced by atwo-dimensional turbulence water-hammer model. The results show that the model is in goodagreement with both laboratory and numerical results. The computed minimum and maximum valuesand the time period of the pressure waves are in close agreement with the 2-D numerical solution andexperimental measurements.}, keywords = {}, title_fa = {اصطکاک ناماندگار در تحلیل حجم محدود جهتمند پدیده ضربه قوچ در لوله ها در شرایط عدم جدایی توده آب}, abstract_fa = {}, keywords_fa = {}, url = {https://jhyd.iha.ir/article_85474.html}, eprint = {https://jhyd.iha.ir/article_85474_d21ad8d526652d521e8c025cf844f38a.pdf} }