En
  • دکتری (1375)

    مهندسی عمران، سازه های دریایی

    دانشگاه صنعتی دلفت هلند، دلفت، هلند

  • کارشناسی‌ارشد (1370)

    Coastal and Offshore Engineering

    IHE Delft Institute for Water Education، Delft، هلند The Netherlands

  • کارشناسی‌ارشد (1370)

    IHE Delft Institute for Water Education، Delft، هلند

  • کارشناسی‌ارشد (1368)

    مهندسی عمران سازه های هیدرولیکی

    دانشگاه علم و صنعت ایران، تهران، ایران

  • کارشناسی (1363)

    مهندسی عمران - راه وساختمان

    دانشگاه تبریز،

  • هیدرودینامیک امواج و جریان های دریایی
  • پایداری و واکنش های هیدرولیکی موج شکن ها و سازه های حفاظت سواحل
  • طراحی بر مبنای عملکرد سازه های دریایی
  • هیدرومکانیک سازه های شناور دریایی
  • آزمایشگاه سازه دریایی

داده ای یافت نشد

ارتباط

رزومه

Techno-economic assessment of a hybrid RO-MED desalination plant integrated with a solar CHP system

FJ Jamshidian, S Gorjian, M Shafieefar
Journal Papers , , {Pages }

Abstract

Assessment of wind datasets on the tropical cyclones’ event (case study: Gonu tropical cyclone)

Ahmad Rezaee Mazyak, Mehdi Shafieefar
Journal PapersMeteorology and Atmospheric Physics , 2021 January 27, {Pages 19-Jan }

Abstract

Even though the occurrence rate of tropical cyclones (TCs) is almost steady as reported in earlier studies, however, the intensity of TCs has shown a significant increase due to global warming. Gonu (2007) and Phet (2010) are examples of TCs, which affected the southern coasts of Iran. The first step in evaluating the effects of TC is the accuracy as well as the correctness of the wind field. For this purpose, the WRF and parametric models have been implemented for the wind field simulation, in the Makran coasts during the Gonu TC. QuikSCAT satellite data and coastal synoptic stations data have been used to evaluate the wind field results. The results indicated that the WRF model can successfully forecast the cyclone’s path and its output

Multi-peaked directional wave spectra based on extensive field measurement data in the Gulf of Oman

Mohammad Adibzade, Mehdi Shafieefar, Hassan Akbari, Roozbeh Panahi
Journal PapersOcean Engineering , Volume 230 , 2021 June 15, {Pages 109057 }

Abstract

Multi-peaked directional wave spectra have been estimated by the well-known maximum likelihood method and modeled by applying a numerical optimization approach that uses a gradient OQNLP algorithm. The research is based on field measurement data from a 210-km-long area at the northern coasts of the Gulf of Oman. This modeling approach allows the fitting of various spectral models. Accordingly, three directional spectrum models with combinations of frequency and directional spreading functions have been evaluated and proper models for directional waves have been presented. On the other hand, the introduced optimization algorithm is modified by adding a constraint to zeroth-order spectral moment (m0) value to improve the fitting accuracy in t

Design of a rubble mound breakwater under the combined effect of wave heights and water levels, under present and future climate conditions

S Radfar, M Shafieefar, H Akbari, PA Galiatsatou, AR Mazyak
Journal Papers , , {Pages }

Abstract

On Berm Design of Icelandic-Type Breakwaters with Emphasis on the Relation between Armor Damage and Berm Recession (Case study: Sirevåg berm breakwater)

M Ehsani, MN Moghim, M Shafieefar
Journal Papers , , {Pages }

Abstract

Influence of toe berm geometry on stability of reshaping berm breakwaters

Mehdi Shafieefar, Mohammad Reza Shekari, Bas Hofland
Journal PapersCoastal Engineering , Volume 157 , 2020 April 1, {Pages 103636 }

Abstract

Reshaping berm breakwaters have been mainly designed and built for water depth less than 20?m. In such conditions, a toe structure may be needed to reduce bottom settlements and increase geotechnical stability in the loose subsoil condition. Also, a toe berm can be deployed to reduce the berm recession and increase the stability of the Reshaping berm breakwater, especially in deep water. Although many studies have been conducted to study the effects of toe berms on stability of conventional breakwaters, investigations on the influence of a toe berm on stability of reshaping berm breakwaters are rare. This paper presents results of an experimental work that has been carried out to investigate the influence of a toe berm on the hydraulic stab

An experimental study on the hydraulic stability of Icelandic-Type berm breakwaters

Majid Ehsani, Mohammad Navid Moghim, Mehdi Shafieefar
Journal PapersCoastal Engineering , Volume 156 , 2020 March 1, {Pages 103599 }

Abstract

One of the key aspects of breakwater design and safety assessment is their stability evaluation. In the present paper, hydraulic stability of a multi-layer berm breakwater (MLBB) has been studied through varying the parameter of eroded area. To this end, a 2-D experimental model has been carried out in the wave flume of Tarbiat Modares University using irregular waves with a JONSWAP spectrum. A total of 150 tests have been performed to cover a wide range of sea state conditions and geometrical parameters such as wave height, wave period, water depth, berm width, berm elevation, stone class I height, front slope and nominal diameter of stone class I. In this study, a new dimensionless parameter is introduced to indicate that the wave breakin

The Effect of Stone Class I Characteristics on Hydraulic Stability of Multi-Layer Berm Breakwaters

Majid Ehsani, Mohammad Navid Moghim
Journal PapersJournal Of Marine Engineering , 2020 January 1, {Pages 53-67 }

Abstract

Assessing the stability of the breakwaters against incident waves is the most important issue in structure designing. Due to this fact, the effects of different parameters on the stability of multi-layer berm breakwater (MLBBs) have been presented in this study. A 2D experimental model of an MLBB with a JONSWAP spectrum of irregular waves is conducted. The effects of berm parameters such as berm elevation from SWL and water depth at the toe of the structure have been evaluated on MLBBs damage. The new parameter of stone class I height is assessed to find its effect on MLBBs stability. Outcomes disclose that an increase in stone class I height would increase the wave energy dissipation and consequently decrease the structure’s damaged erod

Wave Reflection of irregular waves from Multi-Layer Berm Breakwaters

Majid Ehsani, Mohammad Navid Moghim, Mehdi Shafieefar, Amir Mostaghiman
Journal PapersInternational Journal of Coastal and Offshore Engineering , 2020 April 10, {Pages 23-Nov }

Abstract

One of the emerging issues from an efficacious design of berm breakwaters is the estimation of wave reflection. In the present study, the wave reflection of a multi-layer berm breakwater (MLBB) has been studied based on model experimentation. To gain this goal, two-dimensional model tests have been carried out in a wave flume at Tarbiat Modares University. Irregular waves were generated using the JONSWAP spectrum. The effect of various parameters like wave height, wave period, water depth, and berm elevation from still water level is investigated on the wave reflection. The achieved outcomes of this study proposes a new formula estimating MLBBs wave reflection. Finally, the performance of the derived formula against the existing formulae pr

Application of tuned liquid column damper for motion reduction of semisubmersible platforms

Hamid Reza Feizian, Mehdi Shafieefar, Roozbeh Panahi
Journal PapersInternational Journal of Coastal and Offshore Engineering , 2020 July 10, {Pages 23-40 }

Abstract

Incorporation of a tuned liquid column damper (TLCD) into a semisubmersible drilling platform is numerically investigated in this paper. First, a governing equation for liquid fluctuation in the TLCD is derived for the planar motion of the TLCD in conjunction with the motion of the platform. Then, the real-time response of the platform under irregular waves is analyzed using radiation/diffraction theory in which TLCD loading is exerted on the platform at each time-step. This facilitates capture of the difference-frequency and sum frequency second order wave forces and the low-frequency motion of the platform. The results show that the effect of the rotational motion of the platform on the TLCD is significant and the TLCD has a reciprocal ef

Developing families of Ochi-Hubble spectra for the northern parts of the Gulf of Oman

Amir Golpira, Roozbeh Panahi, Mehdi Shafieefar
Journal PapersOcean Engineering , Volume 178 , 2019 April 15, {Pages 345-356 }

Abstract

The Ochi-Hubble spectrum model is a six-parameter spectrum proposed for sea states consisting of swell and wind-sea components. This paper modifies this model, and analyzes them using two series of measurement dataset in the Gulf of Oman during 2006–2007 and 2016, to represent its double-peaked spectra. Double-peaked spectra of the 2016 dataset were recorded at seven stations and then were categorized into two groups based on the dominance of swell or wind-sea components, each including five classes based on the significant wave height. In the meantime, values of six parameters of the Ochi-Hubble model were extracted from field dataset. Then, a comprehensive statistical analysis was performed based on the occurrence probability of spectra

Evaluation of the effects of sediment characteristics on long-term estuarine morphological modelling driven by waves and tides

Mohammad Fayyaz, Mehdi Shafieefar, Ali Dastgheib
Journal PapersApplied Ocean Research , Volume 92 , 2019 November 1, {Pages 101919 }

Abstract

Tidal basins are made of several elements that have achieved morphological equilibrium and have been affected by hydrodynamic forces over the centuries with its present form. In addition to the effects of hydrodynamic forces, morphological equilibrium is also affected by the sediment parameters. In this study, the effects of sediment characteristics on the long-term morphology of tidal basins were evaluated. A realistic analogue method was used to illustrate the final form of basin morphology after reaching the equilibrium. Also, the effects of important sedimentary parameters were evaluated to provide the long-term forecast of the morphology comprehensively. Instead of trying to replicate the exact conditions in a particular period of time

Effect Comparison of Environmental and Structural Parameters Affecting on Deformation and Hydraulic Stability of Reshaping Berm Breakwaters

Matin Amir Arsalan Karami, HASSAN AKBARI, MEHDI SHAFIEEFAR
Journal Papers , Volume 5 , Issue 3, 2019 January 1, {Pages 226-238 }

Abstract

Berm breakwaters are reshaping rubble mound breakwaters, which as a result of impact with wave attacks, the seaside profile of these breakwaters reach a stable condition after erosion and reshaping. Berm recession (Rec) is one of the most important parameters that should be controlled for designing a stable berm breakwater. Failure of a berm breakwater is typically defined when the berm recession exceeds the initial berm width. Based on experimental tests, the effect of sea state and structural parameters on berm recession was investigated in this study. The berm recession was recorded under different number of waves through performing 34 experiments. The results showed that a berm breakwater experiences more than appproximately 90% of its

Non-dimensional criteria for jet independency in multi port and rosette systems in shallow seawater

Mansooreh Mohammadi, Mehdi Shafieefar, Soheil Radfar
Journal Papers , Volume 6 , Issue 2, 2019 August 23, {Pages 60-70 }

Abstract

Providing fresh water is of the most crucial issues in each countries. So, there exists an increasing need for research and development on the systems like desalinations. Salinity is one of the most important adverse environmental effects of such plants. Literature review shows that there are few researches on the investigation of jet behavior of the multiport system or the shallow water condition using CFD approach. On the other hand, utilization of multiport and rosette systems in high capacity desalination plants is increasing. In this regard, in this paper, effect of port spacing and configuration on brine pollution dispersion in these systems in the shallow water regime are being investigated for the Kangan petrochemical plant using AN

Wave Characteristics in the Northern Coasts of Persian Gulf

Mehdi Shafieefar, Ahmad Rezaei Mazyak, Mohammadreza Khosravi
Journal PapersJournal of the Persian Gulf , Volume 10 , Issue 35, 2019 March 10, {Pages 40-0 }

Abstract

Understanding the wave pattern as a first step in marine studies is very important. The global models as a source of data can be used to simulate local waves. Before applying them, their results should be evaluated. One of the most important global models is the ECMWF model. Based on the wave simulation in the northern coast of the Persian Gulf, it can be said that the ECMWF model results are of good quality for use in local modelling in this area. Also, according to the statistical analysis, the Generalized Pareto and Weibull distributions had the best fit.

Effect Comparison of Environmental and Structural Parameters Affecting on Deformation and Hydraulic Stability of Reshaping Berm Breakwaters

MAA Karami, H AKBARI, M SHAFIEEFAR
Journal Papers , , {Pages }

Abstract

An Artificial Neural Network for Prediction of Front Slope Recession in Berm Breakwaters

Alireza Sadat Hosseini, Mehdi Shafieefar, Omid Alizadeh
Journal Papers , Volume 2 , Issue 1, 2018 January 1, {Pages 37-44 }

Abstract

Berm breakwaters are used as protective structures against the wave attack where larger quarry materials as armor stone is scarce, or large quarry materials are available but using berm breakwater lowers the costs considerably. In addition, wave overtopping in berm breakwaters are significantly lower than the traditional ones for equal crest level because of the wave energy dissipation on the berm. The most important design parameter of berm breakwaters is its seaward berm recession which has to be well estimated. In this paper a method has been developed to estimate the front slope recession of berm breakwaters using artificial neural networks with high accuracy. Four different available data-sets from four experimental tests are used to c

An Artificial Neural Network for Prediction of Front Slope Recession in Berm Breakwater

Alireza Sadat Hosseini, Mehdi Shafieefar, Omid Alizadeh
Journal PapersInternational Journal of Coastal and Offshore Engineering , Volume 1 , Issue 4, 2018 March 15, {Pages 37-44 }

Abstract

Berm breakwaters are used as protective structures against the wave attack where larger quarry materials as armor stone is scarce, or large quarry materials are available but using berm breakwater lowers the costs considerably. In addition, wave overtopping in berm breakwaters are significantly lower than the traditional ones for equal crest level because of the wave energy dissipation on the berm. The most important design parameter of berm breakwaters is its seaward berm recession which has to be well estimated. In this paper a method has been developed to estimate the front slope recession of berm breakwaters using artificial neural networks with high accuracy. Four different available data-sets from four experimental tests are used to c

Journal of Solar Energy Research (JSER)

F Jalili Jamshidian, Sh Gorjian, M Shafiee Far
Journal PapersJournal of Solar Energy Research Vol , Volume 3 , Issue 4, 2018 January , {Pages 301-312 }

Abstract

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Hydrodynamic Simulation of Oil Blowout and Response Action to Evaluate Environmental Consequences on Prawns

Mehdi Shafieefar, Pooya Rangbar
Journal PapersInternational Journal of Maritime Technology , Volume 10 , 2018 July 10, {Pages 15-24 }

Abstract

A scenario-specific modeling of oil blowout from the Khark island pipelines in the Persian Gulf has been carried out to evaluate the environmental impact of oil spill on the local coast, seabed and prawns. Also, various scenarios for response actions have been considered. The analyses have been performed by SINTEF Oil Spill Contingency and Response (OSCAR), a 3-dimensional model system. At the first step, OSCAR as the oil spill analysis model was successfully verified in the Persian Gulf using Mina Al-Ahmadi oil spill field observed data. The oil path and predicted time resulted from the OSCAR model were in a very good agreement with the field observed data. Results related to the scenarios of oil blowout from the Khark Island pipelines ind

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دروس نیمسال جاری

  • كارشناسي ارشد
    اصول طراحي سازه هاي (متعارف) دريايي ( واحد)
    دانشکده مهندسی عمران و محیط زیست، گروه سازه هاي دريايي

دروس نیمسال قبل

  • كارشناسي ارشد
    مباني هيدروليك دريا ( واحد)
    دانشکده مهندسی عمران و محیط زیست، گروه سازه هاي دريايي
  • دكتري
    هيدروليك دريايي پيشرفته ( واحد)
  • 1399
    باغشاهي, عباس
    مطالعه آزمايشگاهي تاثير تراز آب در پايداري پنجه موجشكن هاي توده سنگي در آب عميق
  • 1400
    رش مال, بابك
  • 1393
    احساني مقدم, رضا
    طراحي به روش عملكرد موج شكن هاي قائم مركب سطح طراحي مرتبه 3
  • مدیر گروه مهندسی آب
  • عضو هیات تحریریه نشریه فناوری فراساحل
  • عضو هیات تحریریه مجله علمی پژوهشی International Journal of Maritime Technology
  • عضو هیات تحریریه مجله علمی پژوهشی هیدرولیک ایران
  • مدیر گروه سازه های هیدرولیکی
  • مدیر گروه سازه های دریایی
  • عضو هیات تحریریه مجله پژوهش های دریایی
  • عضو هیات تحریریه مجله پژوهش های دریایی
  • عضو هیات تحریریه مجله علمی- پژوهشی مهندسی دریا
  • عضو هیات تحریریه مجله مهندسی دریا
  • عضو هیات تحریریه مجله علمی- پژوهشی مهندسی دریا
  • عضو هیات تحریریه مجله علمی- پژوهشی مهندسی دریا
  • استاد برگزیده دریایی کشور توسط انجمن مهندسی دریا 1393
  • استاد نمونه دانشگاه 1388
  • پژوهشگر نمونه دانشگاه 1395
  • پژوهشگر نمونه دانشگاه 1401
  • پژوهشگر نمونه دانشگاه 1401
  • پژوهشگر نمونه دانشگاه 1401
  • پژوهشگر نمونه دانشگاه 1401

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