@article { author = {Abedin Maghanaki, Amir}, title = {An Overview of Fabrication Methods and Applications of Carbon Nanotube Membrane in Environmental Engineering as Hydraulic Microstructures}, journal = {Journal of Hydraulic Structures}, volume = {3}, number = {1}, pages = {1-13}, year = {2017}, publisher = {Shahid Chamran University of Ahvaz}, issn = {2345-413X}, eissn = {2345-4156}, doi = {10.22055/jhs.2017.13280}, abstract = {The main purpose of this article is to study fabrication methods and applications of aligned carbon nanotube (CNT) membranes as a hydraulic microstructure in treatment processes. This paper emphasizes the use of CNTs as membrane in separation processes like water and wastewater treatment because of their exclusive advantages. Their most important characteristics are high mechanical strength against pressure, thermal stability and fast fluid transport with a very low pressure gradient inside CNTs. It is predictable to expand using CNT membranes in separation processes and environmental engineering because of their suitable mechanical properties.}, keywords = {Membrane,Carbon nanotubes,Treatment Processes,Environmental Engineering,Hydraulic Microstructures}, url = {https://jhs.scu.ac.ir/article_13280.html}, eprint = {https://jhs.scu.ac.ir/article_13280_4c8a483e0e84173af248f7f601b768d0.pdf} } @article { author = {Khademalrasoul, AbdolGhafoor and Maghsoudi, R.}, title = {Estimation of Fracture path in the Structures and the Influences of Non-singular term on crack propagation}, journal = {Journal of Hydraulic Structures}, volume = {3}, number = {1}, pages = {14-34}, year = {2017}, publisher = {Shahid Chamran University of Ahvaz}, issn = {2345-413X}, eissn = {2345-4156}, doi = {10.22055/jhs.2017.13281}, abstract = {In the present research, a fully Automatic crack propagation as one of the most complicated issues in fracture mechanics is studied whether there is an inclusion or no inclusion in the structures. In this study The Extended Finite Element Method (XFEM) is utilized because of several drawbacks in standard finite element method in crack propagation modeling. Estimated Crack paths are obtained by using Level Set Method (LSM) in coupling with XFEM for 2D mixed mode crack propagation problems. Also, stress intensity factors for mixed mode crack problems are numerically calculated by using interaction integral method completely based on familiar path independent J-integral approach. However, the influence of the first non-singular term (T-stress) of Williams’ stress distribution series in a cracked body is considered. Different crack growth paths are calculated for different domains with predefined notches such as edge and center cracks. In addition, predefined cracks and inclusions are implicitly defined using enrichment procedure in the XFEM framework and the effects of soft or hard inclusions are studied on crack propagation schemes. Finally, estimated crack paths under assumed conditions by using XFEM, are compared with the experimental results.}, keywords = {Extended Finite Element Method,Level Set Method,Interaction integral,Soft and Hard inclusions,T-stress}, url = {https://jhs.scu.ac.ir/article_13281.html}, eprint = {https://jhs.scu.ac.ir/article_13281_e5afc5451c649a422dc19fc39abefc65.pdf} } @article { author = {Ashrafi, Seyed Mohammad and Ashrafi, Seyedeh Fatemeh and Moazami, Saber}, title = {Developing Self-adaptive Melody Search Algorithm for Optimal Operation of Multi-reservoir Systems}, journal = {Journal of Hydraulic Structures}, volume = {3}, number = {1}, pages = {35-48}, year = {2017}, publisher = {Shahid Chamran University of Ahvaz}, issn = {2345-413X}, eissn = {2345-4156}, doi = {10.22055/jhs.2017.13282}, abstract = {Operation of multi-reservoir systems is known as complicated and often large-scale optimization problems. The problems, because of broad search space, nonlinear relationships, correlation of several variables, as well as problem uncertainty, are difficult requiring powerful algorithms with specific capabilities to be solved. In the present study a Self-adaptive version of Melody Search algorithm is presented and applied to obtain Operating Rule Curves for multi-reservoir systems. The self-adaptive mechanism is implemented to satisfy problems constraints and perform algorithm parameters evolution going through different iterations. The research initially evaluates capability of extended algorithm using eight benchmark problems comparing other well-known metaheuristic algorithms, and verifies its effectiveness. Then, the algorithm is adopted for optimal operation of a four-reservoir system located in Karkheh river basin to properly meet agricultural requirements and to decrease the probability of major failures; and finally, the results are provided.}, keywords = {Multi-reservoir operation,Melody Search Algorithm,Self-adaptive method,Operating rule curve,Demand deficit}, url = {https://jhs.scu.ac.ir/article_13282.html}, eprint = {https://jhs.scu.ac.ir/article_13282_2da689859f4ed0f6a948687cc80a018b.pdf} } @article { author = {Ebrahim Bakhshipour, Amin and Makaremi, Yasaman and Dittmer, Ulrich}, title = {Multiobjective design of sewer networks}, journal = {Journal of Hydraulic Structures}, volume = {3}, number = {1}, pages = {49-56}, year = {2017}, publisher = {Shahid Chamran University of Ahvaz}, issn = {2345-413X}, eissn = {2345-4156}, doi = {10.22055/jhs.2017.13316}, abstract = {The sewer layout in flat areas significantly influences the construction and operational costs as well as reliability of the network performance. To find an optimum design of sewer networks for flat areas, this study presents a multi-objective optimization problem with the objective functions of 1- the cost and 2- the reliability. The reliability criterion is defined as the effect of a clogging in a sewer on its upstream population. To solve the problem, the NSGA-II Algorithm is coupled to two self-adaptive design algorithms for generating the layout and sizing of sewers. A case study is solved using the proposed model to demonstrate its application and advantages.}, keywords = {Sewer network,Layout,Reliability,Flat area,Multiobjective optimization}, url = {https://jhs.scu.ac.ir/article_13316.html}, eprint = {https://jhs.scu.ac.ir/article_13316_1f87b1aaf00dcbdba8611b362bc465b6.pdf} } @article { author = {Heydari, Majid and Mohammadiha, Akbar and Abolfathi, Shima}, title = {Proposing a Discharge Coefficient Equation for Triangular Labyrinth Spillways Based on Laboratory Studies}, journal = {Journal of Hydraulic Structures}, volume = {3}, number = {1}, pages = {57-70}, year = {2017}, publisher = {Shahid Chamran University of Ahvaz}, issn = {2345-413X}, eissn = {2345-4156}, doi = {10.22055/jhs.2017.13317}, abstract = {Labyrinth spillways are considered as suitable and economic structures because, firstly, their discharge flow rate, under low hydraulic heads, is high, and secondly, they occupy less space. The flow over these spillways is three-dimensional and is influenced by several parameters. This study endeavors to offer a new equation for the calculation of the discharge flow of triangular labyrinth spillways by using the Buckingham Theory, Genetic Algorithm, the equations offered by other researchers and non-dimensional laboratory parameters. To do so, several experiments were carried out in the hydraulic laboratory of the Department of water science at BuAli Sina University in Hamedan. These experiments were done on triangular labyrinth spillways in a straight condition in certain flumes which were 10 meters long, 0.83 meters wide, and 0.5 meters height. To verify the recommended equation, the authors used the information related to the labyrinth spillway design of Bartletts Ferry dam in the US and the equation for triangular spillways suggested by previous researcher. The results indicated that the equation recommended in this study is far more accurate than the previous one.}, keywords = {Triangular Labyrinth Spillway,Discharge Coefficient,Buckingham Theory,Genetic Algorithm}, url = {https://jhs.scu.ac.ir/article_13317.html}, eprint = {https://jhs.scu.ac.ir/article_13317_09fb4980fbae4135a8a4a42192432860.pdf} } @article { author = {Goharnejad, Hamid and Mohamadi Naser, Majid and Zakeri Niri, Mahmoud}, title = {The Optimization of Energy Supply Systems by Sequential Streamflow Routing Method and Invasive Weed Optimization Algorithm; Case Study: Karun II Hydroelectric Power Plant}, journal = {Journal of Hydraulic Structures}, volume = {3}, number = {1}, pages = {71-82}, year = {2017}, publisher = {Shahid Chamran University of Ahvaz}, issn = {2345-413X}, eissn = {2345-4156}, doi = {10.22055/jhs.2017.13318}, abstract = {Among the major sources of energy supply systems, hydroelectric power plants are more common. Energy supply during peak hours and less environmental issues are some of the most important advantages of hydroelectric power plants. In this study, designing parameters to supply maximum amount of energy was determined by using the simulation-optimization perspective and combination of IWO-WEAP models. Subsequently, the developed model has been applied for designing the Karun II hydroelectric power plant. The sequential streamflow routing method has been developed for obtaining energy in WEAP water resources management software. In addition the optimization algorithm has been applied to optimize the invasive weeds. To verify the performance of this method, obtained results for the firm energy were compared to those of the total energy. Using this method, for 1398 GWY (Giga watt per your) firm energy, the minimum and normal levels of operation were 668 and 672 m.a.s.l (meters above sea level), respectively, and the installation capacity calculated around 498 MW as optimal value.}, keywords = {Sequential streamflow Routing method,Invasive weed optimization algorithm,WEAP model}, url = {https://jhs.scu.ac.ir/article_13318.html}, eprint = {https://jhs.scu.ac.ir/article_13318_86a5f4859ef636289cdf84dff0fecab0.pdf} } @article { author = {}, title = {Journal of Hydraulic Structures, Volume 3, Issue1}, journal = {Journal of Hydraulic Structures}, volume = {3}, number = {1}, pages = {1-82}, year = {2017}, publisher = {Shahid Chamran University of Ahvaz}, issn = {2345-413X}, eissn = {2345-4156}, doi = {10.22055/jhs.2017.13332}, abstract = {}, keywords = {}, url = {https://jhs.scu.ac.ir/article_13332.html}, eprint = {https://jhs.scu.ac.ir/article_13332_a924538068333fb1694a43a099d66b76.pdf} }