TY - JOUR ID - 85354 TI - Uncertainty Analysis ofWater Surface Profile Computations in Rockfill Structures Using Fuzzy Probabilistic Method JO - Journal of Hydraulics JA - JHYD LA - en SN - 2345-4237 AU - Yousefi, A. AU - Hosseini, M. AD - Y1 - 2013 PY - 2013 VL - 7 IS - 4 SP - 37 EP - 52 DO - 10.30482/jhyd.2013.85354 N2 - Rockfill is one of the construction materials used in hydraulic structures. Water surface profilecomputations are required in the design and performance evaluation of many rockfill structures. Inwater surface profile computations in rockfill structures, some physical parameters cannot beaccurately measured and are uncertain. Uncertainty analysis can be used to estimate the uncertainty inthe output of a model due to uncertainty in its input parameters. In this study, uncertainty analysis ofwater surface profile computation in rockfill structures is conducted using a hybrid approach which isa fuzzy probabilistic method. This is done for Wilkins and Stephenson empirical equations and theresults are compared with those of a physical model. Results indicate that the Stephenson equationshows a better agreement with the experimental data. Also, if fuzzy parameters are estimated properly,the Stephenson equation shows less uncertainty. UR - https://jhyd.iha.ir/article_85354.html L1 - https://jhyd.iha.ir/article_85354_4ae8565a35214526934f078c97e5138c.pdf ER -