University of Sistan and BaluchestanJournal of Hydrosciences and Environment2345-560861120220601Flood Wave Simulation Case Study for Natural Water Stream by Numerical Solutions of Unsteady Equations18761610.22111/jhe.2023.45541.1090ENPouriaMirzazadehP.G Researcher, University of Sistan and Baluchestan, Zahedan, IranGholam HosseinAkbariUniversity of BojnordJournal Article20230503Modeling of river conditions and flood routing operations by numerical methods show a high accuracy.The beginning of the modern study of unsteady flow in open channels can be traced to the latter half of the nineteenth century when the French engineer Saint-Venant introduced the partial differential equations of continuity and momentum governing free surface flow in open channels. These equations are highly nonlinear and therefore do not have analytical solutions. This paper present the results of two different numerical methods, namely; Preissmann and Lax diffusive schemes for numerical solution of Saint-Venant equations that govern the propagation of flood wave, in natural rivers, with the objective of the better understanding of this propagation process. The results have shown that the hydraulic parameters play important game in the flood wave propagation. The results of these numerical solutions are compared with the MIKE.11 commercial computer model.https://jhe.usb.ac.ir/article_7616_bfd662e02d9753eddd03952f1188e498.pdfUniversity of Sistan and BaluchestanJournal of Hydrosciences and Environment2345-560861120220601Slope Effect on Dam Break Flow over Movable Bed, Experimental Study915761710.22111/jhe.2023.45574.1093ENF.BahmanpouriUniversity of TehranMasoudMontazeri NaminCollege of Engineering / Faculty of Civil Engineering, University of TehranSeyed TaghiOmid NaeeniCollege of Engineering / Faculty of Civil Engineering, University of TehranJournal Article20230506The failure of a major flood control structure may expose the surrounding population to serious risk. Such an event kind may involve rapid transients with strong interactions between flow and topography. So, to correctly simulate the consequences of a dam failure in a complex topography, this interaction should be accounted for in mathematical modeling, which should however rely on physical descriptions that are not yet completely established. Present study explores some configurations for plane movable bed with different percent of bed slope across the dam. Experiments were carried out in an ideal flume, and instrumentation of the tests performed by means of fast digital imaging through the flume. Results show that increasing in slope lead to increasing in flow velocity and therefore increasing in eroding force and volume of transported sediment. Important result is that increasing in slope lead to nonlinear variation rate of scouring and sedimentation parameters.https://jhe.usb.ac.ir/article_7617_7bad171433fe464a5380d03a529c60dd.pdfUniversity of Sistan and BaluchestanJournal of Hydrosciences and Environment2345-560861120220601Comparison between ANN Models and Conventional Model for Flow Discharge1623762210.22111/jhe.2023.45539.1096ENKiyoumarsRoushangarUniversity of TabrizReyhanehEskandariUniversity of TwenteFatemehVojoudiUniv. of TabrizJournal Article20230502Accurate flow discharge prediction is very important in planning, designing, operating and maintenance of water resources structures. Various models have been developed so far to identify the relation between discharge and stage. In this study, artificial intelligent approach and conventional flow discharge rating curve models are considered for predicting flow discharge (FD) in a natural river. Discharge and stage data obtained from Ahar Chai River in northwest Iran. The accuracy of the ANN models is compared with conventional model. The determination coefficient (DC), coefficient of correlation (R2) and mean normalize error (MNE) statistics are used for evaluating the accuracy of the models. Based on the comparison results, the ANN models are found to be superior alternative to the conventional model.https://jhe.usb.ac.ir/article_7622_bb8753d284eb776d96344ff9cc8ffbb8.pdfUniversity of Sistan and BaluchestanJournal of Hydrosciences and Environment2345-560861120220601Optimized linear model Muskingum parameters2430762110.22111/jhe.2023.45542.1091ENGholamrezaAzizyanCivil Engineering Department, Engineering Faculty of Shahid Nikbakht, Daneshgah boulevardPouriaMirzazadehP.G Researcher, University of Sistan and Baluchestan, Zahedan, IranB.HaghdoustCivil Engineering (Hydraulic Structures), University of Sistan and BaluchestanJournal Article20230503Flood routing in matters relating to engineering projects, has many applications, and is designer to identify the effects of flood flows in the river helps. Muskingum method including flood routing methods that are using the recorded hydrograph based on flood characteristics and continuity equation to be provided routing unsteady flows. In the present study, in addition to the principles explaining the Muskingum methods, different techniques have been used to estimate the parameters of this method. The results for two different data sets Bvanlu River, superior method of least squares and correlation coefficients are shown.https://jhe.usb.ac.ir/article_7621_96c8bf35ac02d270c4adb1c38ea913b6.pdfUniversity of Sistan and BaluchestanJournal of Hydrosciences and Environment2345-560861120220601Investigation of Fluid-Structure Interaction of a Submerged Steel Cylinder3136761910.22111/jhe.2023.45584.1095ENHamedValaeiSchool of Engineering, Department of Civil Engineering, University of Zanjan.JavadMoradluSchool of Engineering, Department of Civil Engineering, University of ZanjanJournal Article20230507Fluid-structure interaction (FSI) is a complex and critical field of study with a range of practical applications in the underwater domain. The present study investigates the FSI effect on two submerged steel structures consisting of ring-stiffened cylinders. The cylinder structures and the surrounding water are modeled using shell and acoustic finite elements, respectively. The study focuses on the dynamic response of the structures when subjected to an acoustic pressure shock wave. The results of the analysis, including the displacement and strain experienced by the structures, are presented and compared. This study provides valuable insights into the FSI effect on submerged structures, which has important implications for a wide range of applications. The findings of this study can contribute to the development of robust and efficient designs for submerged structures that can withstand the harsh underwater environmentsUniversity of Sistan and BaluchestanJournal of Hydrosciences and Environment2345-560861120220601Feasibility study of sedimentation reduction in river intake3741762010.22111/jhe.2023.45579.1094ENGhorbanMahtabiDepartment of water engineering, Faculty of agriculture, University of ZanjanAliHosseinzadeh DalirDepartment of Water Engineering, Faculty of Agriculture, University of Tabriz.D.FarsadizadehDepartment of Water Engineering, Faculty of Agriculture, University of Tabriz.FarzinSalmasiDepartment of Water Engineering, Faculty of Agriculture, University of Tabriz.Journal Article20230507https://jhe.usb.ac.ir/article_7620_05cafad80b6ba2e7b1ed2527b137d946.pdfUniversity of Sistan and BaluchestanJournal of Hydrosciences and Environment2345-560861120220601Investigating Muskingum-Cunge Method Application of Different Schemes in Flood Routing4248761810.22111/jhe.2023.45568.1092ENPouriaMirzazadehP.G Researcher, University of Sistan and Baluchestan, Zahedan, IranGholam HosseinAkbariUniversity of BojnordM.GhodsiPost Graduate. Student, Department of Civil Engineering, University of EstahbanJournal Article20230506Wave flood is the one kind of gradually varied flow. Flood prediction and flood control are very significant; therefore, one of the essential factors in design and evaluation of hydraulic structures and water resources planning is the prediction of flow discharge in rivers which is done by flood routing operation. Muskingum cunge is classified under hydraulic routing categories. This method has been used for modeling unsteady flows. Since this technique has sufficient accuracy, it does not need recorded data. In this study, in addition to the description of constant and variable parameters Muskingum-cunge method, the results were compared by numerical solution included kinematic wave using HEC-RAS software and dynamic model using Mike 11. Results represent that Muskingum-cunge method surely can be used for flood flow routing in rivers.https://jhe.usb.ac.ir/article_7618_202fa152e83d675eae9d5b52431142d0.pdf