Numerical investigation of effective harbor geometry parameters on sedimentation inside square harbors

M. Mojabi; K. Hejazi; M. Karimi

Volume 3, Issue 2 , June 2013, , Pages 57-68

  Sedimentation is one of the most important problems in harbors that results in considerable economic costs. Harbor planforms affects the flow pattern in the harbor basin and consequently, plays an important role in sediment transport and sedimentation. In the present study, a two dimensional depth-averaged ...  Read More

Effect of environmental parameters on the amount of scour in marine structures

M. Arabi; F. Azarsina

Volume 4, Issue 2 , June 2014, , Pages 65-76

  Scour is a phenomenon that occurs as a result of natural erosion by ground water flow and transport of seabed material. In this research, scour around the legs of marine structures is simulated using the FLOW3D.V.9.3™ commercial software. The general scour model consists of two components, namely, ...  Read More

Numerical modeling of wave run-up along columns of semi-submersible platforms

SH. Entezam; S. Kazemi

Volume 5, Issue 2 , June 2015, , Pages 77-86

  Wave run-up is one of the most important and effective parameters in designing semi-submersible platforms. Besides unforeseen effects on the movements and response of the platform, wave run up can also cause slamming forces to be exerted on the lower deck of the platform. Therefore, at the first stages ...  Read More

A comparative study of sloshing in liquefied natural gas (LNG) carriers according the classification codes

F. Azarsina; R. Panahi

Volume 2, Issue 1 , March 2012, , Pages 91-100

  This paper assesses the design guidelines of different classification codes for the liquefied natural gas carriers considering the effect of liquid sloshing. With regard the increasing importance of LNG carriers in today’s marine transportation, and also considering that the marine accidents involve ...  Read More

Structural analysis of the deck of access bridges in offshore docks under dynamic loading of moving heavy vehicles (Case study: 10 feet concrete deck with prefabricated beam, under the passage of 125-ton bogie)
Volume 3, Issue 3 , July 2013, , Pages 125-132

  Ports are the most important economic, political and military bottlenecks. This puts shoreline structures (port) in the class of important structures and they have a crucial role in the countries’ life. Pile and deck wharf and their access bridges and offshore deck (jetties), are one of the parts ...  Read More

A novel boundary condition for the simulation of the submerged bodies using lattice boltzmann method

Sh. Sharafatmandjoor; F. Sabetghadam; H. R. Fathalizadeh; A. Shahirpour

Volume 2, Issue 2 , June 2012, , Pages 149-152

  In this study, we proposed a novel scheme for the implementation of the no-slip boundary condition in thelattice Boltzmann method (LBM) . In detail , we have substituted the classical bounce-back idea by the direct immersed boundary specification . In this way we construct the equilibrium density ...  Read More

Investigation on anthropogenic and natural share of heavy metals in surface sediments of Shadegan wetland

A. Hosseini Alhashemi; M. Mohammadi Roozbahani; P. Maktabi

Volume 2, Issue 3 , August 2012, , Pages 189-196

  Accumulation of trace metals in sediment can cause severe ecological impacts. The present study determines the elemental concentrations and chemical partitioning of heavy metals in surface sediment of Shadegan wetland. Shadegan wetland is one of the most important wetlands in southwest of Iran and it ...  Read More

Assessment of DNA damage induced by butachlor on Cyprinuscarpio(L. 1758) using Single Cell Gel Electrophoresis

A. Mashinchian Moradi; M. AlidoustSalimi; M. H. Shahhosseini; P. AlidoustSalimi

Volume 2, Issue 4 , December 2012, , Pages 233-238

  Butachlor (N-(butoxymethyl)-2-chloro-N-2, 6-diethylacetanillide) is widely used chloroacetanilide herbicide in Asian region, especially in the north of Iran. Several studies have been reported on toxicity of butachlor, but little information is accessible on DNA damaging potential. Thus, the present ...  Read More

Numerical modelling of induced rip currents by discontinuous submerged breakwaters

mohammad javad ketabdari; m. BarzegarPaiinlamouki

Volume 4, Issue 1 , February 2014, , Pages 15-24

  Submerged breakwaters are one of the shore protective structures. Any discontinuity in these breakwaters causes changes on current parameters including speed and water surface profile. In this paper, discontinuous submerged breakwaters were modelled to investigate the changes in the wave and flow pattern.To ...  Read More

Heavy Metal Ions on Titanium Dioxide Nano-Particle: Biomagnification in an Experimental Aquatic Food Chain

M. Hosseini; SH. Rahmanpour; A Mashinchian Moradi

Volume 5, Issue 1 , January 2015, , Pages 23-29

  Heavy metal metals are non-biodegradable, have a remarkable ability to transfer through food chains and are potentially toxic for organisms.They are introduced tomarine environment via different anthropogenic sources. In this study, the ability of titanium dioxide nano-particle in transfer of Cr, Cu, ...  Read More

Application of Fuzzy Fault Tree Analysis on Oil and Gas Offshore Pipelines

M. R. Miri Lavasani; J. Wang; Z. Yang; J. Finlay

Volume 1, Issue 1 , December 2011, , Pages 29-42

  Fault Tree Analysis (FTA) as a Probabilistic Risk Assessment (PRA) method is used to identify basic causes leading to an undesired event, to represent logical relation of these basic causes in leading to the event, and finally to calculate the probability of occurrence of this event. To conduct a quantitative ...  Read More

Influence of cement content on concrete performance in corrosive environments (sea water)

M. Soleimanirad; M. Tadayon; F. Rezaie

Volume 3, Issue 2 , June 2013, , Pages 69-76

  In this study, the effect of cement content on concrete performance in corrosive environments is investigated on concrete mixtures having the same water/cement (w/c) ratio. Three w/c ratios (0.40, 0.45 and 0.50) were used and for each w/c ratio three mixtures were prepared with cement contents 350, 400 ...  Read More

Seismic Behavior of Jacket Offshore Platform Subjected to Near and Far Field Ground Motions

K. Kashizadeh; A. Sarvghad Moghadam; F. Azarsina

Volume 4, Issue 2 , June 2014, , Pages 77-88

  Offshore structures such as jacket platforms have to inevitably be designed against  sever  environmental actions. In seismically active areas these structures also become susceptible to earthquake excitations. Strong ground motions recorded  in recent earthquakes, including the 1995 Kobe, ...  Read More

Application of Additive Manufacturing in Marine Industry

A. Ebrahimi

Volume 5, Issue 2 , June 2015, , Pages 87-92

  The advantage of additive manufacturing (AM) (e.g. reasonable time and expense in prototyping, and reliable product) has triggered the idea of using this method in manufacturing of marine vessels components. The current article tries to introduce basic concepts of AM method and its application in marine ...  Read More

The study of seaweeds biomass from intertidal rocky shores of Qeshm Island, Persian Gulf

S. M. R. Fatemi; P. Ghavam Mostafavi; F. Rafiee; M. Saeed Taheri

Volume 2, Issue 1 , March 2012, , Pages 101-106

  Rocky shores are one of the most important habitats of marine environment in coastal areas. They host marine organisms including seaweeds because of existence of strong and stable substrate for their growths. Intertidal rocky shores are a prominent feature on coastal areas of Qeshm Island located at ...  Read More

Histological studies of ovarian development of the Japanese Threadfin Bream, Nemipterusjaponicus, in the Northern of Persian Gulf
Volume 3, Issue 3 , July 2013, , Pages 133-140

  In the present study, a total of 595 specimens collected monthly in the northern part of Persian Gulf between November 2006 and October 2007 were examined by routine macroscopic and histological techniques. Monthly changes in the gonadosomatic index showed the spawning season extended within 2 peaks, ...  Read More

Comparison between linear and nonlinear models for surge motion of TLP

M. R. Tabeshpour; R. Shoghi

Volume 2, Issue 2 , June 2012, , Pages 153-162

  Tension-Leg Platform (TLP) is a vertically moored floating structure. The platform is permanently mooredby tendons. Surge equation of motion of TLP is highly nonlinear because of large displacement and it should be solved with perturbation parameter in time domain. This paper compare the dynamic ...  Read More

Estimatin of growth parameters and mortality rates of Psettodes )erumei in the Persian Gulf and Oman sea)Hormozgan province

R. Gilanshahi; S. A. Taghavimotlagh; F. Kaymaram; S. M. R. Fatemi; Gh. Vosooghi

Volume 2, Issue 3 , August 2012, , Pages 197-202

  The growth parameters, mortality rates and exploitation population dynamic parameters and exploitation rate of Psettodes erumei were assessed between July 2010 to June 2011 using length frequency analysis. The data were collected from landing sites of Jask, Bandar Abass, Kong and Qeshm Hormozgan province ...  Read More

Safety assessment of offshore structure

A. Zendegani; A. Narimannejad; M. R. MiriLavasani; G. Nasiri

Volume 2, Issue 4 , December 2012, , Pages 239-248

  Reliability of a system is the probability that it will function as intended for the required period of time. The opposite of reliability is failure probability per unit time or over time, such as a life cycle. Following a review of existing reliability codes and approaches, comprehensive approaches ...  Read More

Study of the rate of organic oil pollutants (PAHS) and heavy metals (V, Ni, Hg) in the four regions, Siri, Lavan, Khark and Bahregan in the Persian Gulf

M. Kashefiolasl; H. Zargarlelahi

Volume 3, Issue 1 , March 2013, , Pages 25-32

  Pollution of marine waters is one of the important issues that has a irreparable effects. Also, in the organic oil pollutants, due to inappropriate effects on the environment and humans health and ability to create cancer, hydro carbons of polycyclic (PAHS) and heavy metals (Ni,Hg,V) have a particular ...  Read More

Modeling of Hydrodynamic Factors for Management of Coastal Hazards, Case Study: Khamir Port, Persian Gulf, Iran

m. a. Nezammahalleh; m. yamani; sh soltani; a. maldar badeli; a. rastegar

Volume 4, Issue 1 , February 2014, , Pages 25-36

  In coastal areas, hydrodynamic factors make changes in shorelines geomorphology. This can affect coastal facilities and cause hazards to human societies in the areas. This study has investigated the influence of wave and tide properties on Khamir Port, Hormoz Strait in coast of Persian Gulf. The purpose ...  Read More

Investigation of Influence of Mooring system in Response of FPSO

M. Hosseini manash; M.J. Ketabdari

Volume 5, Issue 1 , January 2015, , Pages 31-40

  FPSOs are useful in newly established offshore oil regions where there is no pipeline infrastructure in place, or in remote locations where building a pipeline is cost-prohibitive. In this study, hydrodynamic analysis of FPSO is inquired based Boundary Element Method (BEM) and wave forces/moments, ...  Read More

Genetic Identification of Symbiodinium in Genus Acropora off Farur Island, Persian Gulf

S. Rahmani; P. Ghavam Mostafavi; M. H. Shahhosseiny; Gh. Vosoughi; A. Faraji

Volume 1, Issue 1 , December 2011, , Pages 43-50

  Coral reefs which form some of the most diverse ecosystems on Earth support many symbiotic relationships. Symbiodinium can provide up to 90% of a coral.s energy requirements. Temperature rise, turbid water and high salinity in the Persian Gulf were among the factors separating zooxanthellae from corals ...  Read More

The effect of semi-active controller in Sirri jacket seismic vibration control

T. Taghikhany

Volume 3, Issue 2 , June 2013, , Pages 77-84

  The Sirri jacket offshore platform was designed and installed in Persian gulf of Iran in 1975 and has been in service since that time. The importance of offshore structure's stability and the failure of this kind of structure during an earthquake in different active zones revealed that earthquake loading ...  Read More

Unsteady aerodynamic analysis of different multi mw horizontal axis offshore wind turbine blade profiles on sst-k-ω model

M. Abbaspour; A.R. Radmanesh; M.R. Soltani

Volume 4, Issue 2 , June 2014, , Pages 89-100

  To indicate the best airfoil profile for different sections of a blade, five airfoils; included S8xx, FFA and AH series was studied. Among the most popular wind power blades for this application were selected, in order to find the optimum performance. Nowadays, modern wind turbines are using blades with ...  Read More