Results 1 to 10 of about 9,046 (101)

Numerical Study of the Effects of Inlet Geometry on the Performance of the Sediment Bypass Tunnel using SSIIM Numerical Model [PDF]

open access: yesJournal of Hydraulic and Water Engineering, 2023
Sediment Bypass Tunnels (SBTs) are deviant channels that convey the current containing sediments from the upstream to the downstream of the reservoir. This study investigates the effect of hydraulic and geometry parameters such as discharge, flow depth ...
P. Aminian, M. Jorabloo, A. Ahmadi
doaj   +1 more source

Assessing SPI-3 months spatial variation using Kriging, Case study, Fars province [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2023
Due to the lack of facilities and commitment in climate stations establishment in large scale interpolation has become an important technique in spatial mapping studies. In this study, the Kriging interpolation technique as a prevalent technique has been
Homa Razmkhah
doaj   +1 more source

Monitoring the temporal changes of meteorological drought in areas of western Iran [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2023
Drought is a natural phenomenon that has a significant impact on human life, and examining its temporal and spatial changes can be effective in dealing with the effects of this phenomenon.
yaser sabzevari   +2 more
doaj   +1 more source

Spatial planning of climatic hazards of desert and dry areas and presenting its strategies [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2022
It is important to know about the deserts of Iran because the geographical and climatic conditions of the desert have never been expanding by themselves.
Vahid Mardani, maryam ilanloo, Neda Orak
doaj   +1 more source

Simulation of the effect of irrigation with Saline-sodic water on Soil infiltration Rate changes with Kostiakov and Philip's infiltration model [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2023
In order to evaluating effects of irrigation with saline-sodic water, we conducted three infiltration experiments in clay-loam soil in end-close furrow. We were using 5cm water depth every week, which had EC=12 ds/m and SAR=32. Experiments were done with
Mehdi Zakerinia, sina Abdolahi
doaj   +1 more source

Numerical Study on Vortices in Collision of Flow with Circular, Square, Triangular, and Pentagonal Barriers of Different Diameters [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2023
Numerical Study on Vortices in Collision of Flow with Circular, Square, Triangular, and Pentagonal Barriers of Different DiametersStructures constructed on rivers induce downstream oscillating vortices.
Saja Kanan, Mohammad Heidarnejad
doaj   +1 more source

Hydrological and Hydraulic Evaluation of Water Transfer from the Kani Sib Tunnel to Lake Urmia [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2023
The decline in water level of Lake Urmia is one of the regional environmental crises. One of the measures to rehabilitate Lake Urmia is the inter-basin water transfer from the Zab Basin to Lake Urmia through the Kani-Sib tunnel.
Ghasem Haji Talkhabi   +2 more
doaj   +1 more source

Investigating the performance of the entropy maximum model in determining the importance of effective environmental factors in creating gully erosion in semi-arid areas [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2023
One of the most important types of erosion that causes widespread land degradation is gully erosion which has many changes in different climates. In this study, environmental factors such as soil type information layers, Lithology, land use, NDVI ...
hamzeh saeediyan   +3 more
doaj   +1 more source

Evaluating the operation of dams under different management programs using the WEAP model (case study: Kardeh Dam of Mashhad) [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2023
The main goal of this research is management and comprehensive planning to optimally use the available water resources of Karde dam, using the WEAP model, and supply the demand in the agriculture and drinking sectors, considering the growth of their ...
Yousef Akbari   +3 more
doaj   +1 more source

Chiu's entropy theory application for simulation of flow field velocity in river bends (Case study: Gorganrood River bend) [PDF]

open access: yesرویکردهای نوین در مهندسی آب و محیط زیست, 2022
In rivers and especially in river bends, the variation of stream-wise flow velocity in width and depth directions is non-uniform and is affected by many factors including secondary flows, bed and bank roughness, and flow hydraulic characteristics.
عبدالرضا ظهیری   +2 more
doaj   +1 more source

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