Amin Bordbar Articles List

List of Articles Amin Bordbar

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1 - Study of Hydraulic Jump in a Stilling Basin with Sinusoidal Bed Using Flow3D Model
Seied Mohammad Tabatabaei Mohammad Heidarnejad Amin Bordbar

Due to the importance of stilling basin blocks and the significant effect of their shape and dimension on energy dissipation, and since various studies have been carried out on hydraulic jump properties and properties of stilling basins while fewer studies have addresse More

Due to the importance of stilling basin blocks and the significant effect of their shape and dimension on energy dissipation, and since various studies have been carried out on hydraulic jump properties and properties of stilling basins while fewer studies have addressed the effect of integrated sinusoidal blocks on hydraulic jump properties, the present research was designed to analyze the effect of sinusoidal blocks height using the Flow 3D model, which is a powerful software product for simulating flow turbulence in two or three dimensions. Froude numbers in this research ranged from 4.6 to 12.2, which indicated that as flow’s Froude number increases from 4.2 to 11, the length of roller and hydraulic jump escalate. Moreover, relative roller length changes for about 30% to 40% by changing the height of blocks. Consequently, jump submerges in the beginning of outflow of flow from below the vent and output flow dissipates quickly. Jump length also decreases with an increase in blocks height. Finally, roller length decreases by 40 to 50 cm with outflow of flow from below the vent for the following two values: (The wave steepness) t/s=0.25 and 0.75. Manuscript profile
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2 - Locating Suitable Sites for Building underground Dam using AHP Multi-criteria Decision Making Method
Farid Dorfeshan Mohammad Heidarnejad Amin Bordbar Hassan Daneshian

Use of underground dams can be beneficial for optimal expansion and utilization of water and also for underground water storage. Considering the prevailing conditions in the region of Andika in Khuzestan Province, building underground dams may be an appropriate strategy More

Use of underground dams can be beneficial for optimal expansion and utilization of water and also for underground water storage. Considering the prevailing conditions in the region of Andika in Khuzestan Province, building underground dams may be an appropriate strategy to offset water shortage during the dry months of the year because construction of such dams in this region entails low costs and the dams will have acceptable efficiency. Many criteria and factors with different degrees of importance are involved in locating underground damsites. Therefore, synchronization of the geographic information system (because of its high capability in analyzing spatial data) and analytic hierarchy process was used to study and apply the role played by each of the mentioned factors (while considering the degrees of their influence in selecting the suitable sites), and the desired results were obtained. The present research used a decision tree that included the reservoir and economic criteria each with its own subcriteria. For the reservoir factor the four subcriteria of slope, hydraulic conductivity, effective porosity, and permeability of dam foundations and for the economic factor the two subcriteria of damsite and its distance from the water use location were considered. Twenty seven sites were initially selected to determine dam axes at the desired sites. The positions of the selected sites were then considered on the map and the spatial priorities of 15 sites were introduced. Finally, the storage volume of each proposed priority was calculated. Manuscript profile
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3 - A Physical Comparison Between Available Hydraulic Models Regarding the Depth of Unsteady Flow
Amin Bordbar

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