List of Articles numerical modeling

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  1 - Spatial Distribution of blocking systems and its Coincidence to the Cold Seasons wet year in Iran
  meysam toulabi nejad zahra hejazizadeh Mohammad سلیقه
  The purpose of this study was to investigate and identify the effect of blocking systems on Iran's poisoning during the period 1975-2015 using the Blocking numerical index. The results showed that in the cold seasons most of the blockades affecting the atmosphere of Ira More

  The purpose of this study was to investigate and identify the effect of blocking systems on Iran's poisoning during the period 1975-2015 using the Blocking numerical index. The results showed that in the cold seasons most of the blockades affecting the atmosphere of Iran were in the northern Atlas. Also, the study of the severity of effective blockades affecting Iran's climate showed that the strong blocking is moderate in terms of the highest number after the blocking, indicating that Iran was more affected by moderate blocking (74.6%) and then strong (21.1%). The number of weak blocking is very low (4.3%). Due to the frequency of occurrence of blocking also was found wet Iran in months. Cold, the core of the blocking in between longitude 30 ° west and 30 ° East over the Atlantic formed and as the warm season approaching, the core the land was transferred to the regions dominated by positive changes in parameters affect precipitation. Also, in Bandal's review in different seasons, it was revealed that in winter, with the retreat of the adjacent high pressure and the strength of the polar vertex, along with the occurrence of strong and long blockades, the average rainfall is more than the other seasons. Manuscript profile
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  2 - Two- and three-dimensional modeling of leakage using instrumentation results in earthen dams
  amene fatehi ali aram
  Infiltration and water leakage are destructive phenomena that after the construction of earth dams can endanger the safety and stability of these structures. Numerous studies have been conducted on the numerical modeling of leakage currents from earth dams. The issue is More

  Infiltration and water leakage are destructive phenomena that after the construction of earth dams can endanger the safety and stability of these structures. Numerous studies have been conducted on the numerical modeling of leakage currents from earth dams. The issue is the seepage from the body and the foundation and its analysis. Leakage in earthen dams is unavoidable, but if there are suitable conditions for soil erosion, seepage will cause soil particles to be washed away in favorable places. Studies on a large number of destroyed earth dams have shown that about 38% of these damages were due to uncontrolled seepage from the dam body. By analyzing the results of instrumentation and numerical model, the accuracy of instrument information embedded in the dam can be ensured. Numerical methods can be a good, accurate and useful tool for modeling physical phenomena such as the movement and flow of water in porous deposits. Finally, the necessary solutions to determine the leakage path, water escape rate and other measures related to dam safety are suggested. Manuscript profile