Analysis of air injection system for drag reduction in high speed vessels using numerical simulation software ANSYS-Fluid Flow

M. Soltaninejad; F. Azarsina; A.H. Javid

Volume 5, Issue 2 , June 2015, , Pages 65-75

  Many existing phenomena in nature are considered new design ideas in various fields of industry. Bionics is the application of biological methods and systems found in nature to the study and design of engineering systems and modern technology. By performing bionic review, the researchers found the penguins ...  Read More

Stability analysis of concrete gravity basestructures in rocking motion under wave effect

S.M. Sajadi; F. Azarsina

Volume 5, Issue 2 , June 2015, , Pages 99-113

  Given the worldwide industry progress in the construction of massive concrete structures, it would be a good idea to use concrete gravity base structures (GBS).In this regard, better understanding of thesestructuresregardingtheiradvantages and disadvantages in offshore areas seems necessary.The present ...  Read More

Optimization of concrete structure mixture plan in marine environment using genetic algorithm

M. Abdoli; F. Azarsina; M.H. Givian Rad

Volume 5, Issue 1 , January 2015, , Pages 15-21

  Today due to increasing development and importance of petroleum activities andmarine transport as well as due to the mining of seabed, building activities such as construction of docks, platforms and structures as those in coastal areas and oceans has increased significantly. Concrete strength as one ...  Read More

Design and construction of 6-component balance dynamometer for measurement of the forces, moments andmotions of ship models in the towing tank

M. Atashrazm Jirande; F. Azarsina; M.S. Seif

Volume 5, Issue 1 , January 2015, , Pages 49-54

  During design spiral of a merchant ship or a naval vessel, it is important to perform towing tank tests in order to measure its performance either in calm water maneuvers or in waves for seakeeping performance. Also, to optimize a hydrodynamic design, towing tank tests are advantageous.This article presents ...  Read More

Materials performance assessment of protective layer of rubble mound breakwaters, southern coast of Iran

P. . Atabak; S. Allahyaribeik; F. Azarsina

Volume 4, Issue 2 , June 2014, , Pages 57-64

  This study aims to examine the performance of the rock materials in the protective layer of rubble-mound breakwaters in southern Iran, from Rostami Port in Bushehr Province to Beris Port in Sistan and Baluchestan Province. Field inspections were carried out on a great number of rubble-mound breakwaters ...  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

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

Nonlinear statics analysis of on offshore jaket platform in the case of explosion

M. Tajari; F. Azarsina; N. Ashrafi Khorasani

Volume 3, Issue 1 , March 2013, , Pages 33-42

  Explosion and fire on an offshore rig can lead to its minor or complete damage and sinking which means the loss of life or environmental pollution. Hence the use of techniques such as blast wall is crucial to reduce the detrimental effects. These blast walls are designed for explosion wave of length ...  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

Feasibility Study of Building a Human Powered Hydrofoil Vessel

F. Azarsina

Volume 1, Issue 1 , December 2011, , Pages 59-68

  In this paper, a feasibility study of building a Human Powered Hydrofoil (HPH) vessel is reported. Hydrofoil vessels are a well-known class of high-speed crafts. In addition to high-speed operation, the hydrofoils have a reliable maneuvering capability, good stability and proper operation in waves. Also, ...  Read More