نتایج جستجو برای: hydrodynamic force

تعداد نتایج: 211158  

Journal: :journal of algorithms and computation 0
nikzad nourpanah moharram dolatshahi pirooz

development of a numerical model which describes launching of offshore jackets from barge is presented in this paper. in this model, in addition to capabilities of commercial softwares, water entry forces on jacket members and an implicit newmark solution technique are included. the results are in general agreement with other numerical software’s available (sacs). fluid forces acting on jacket ...

Journal: :international journal of advanced biological and biomedical research 2014
hamed baghal asghari baghmisheh hossein ghaffari sina khalilvandi behrouzyar ali abbaszadeh-asl

in order to design and manufacturing some postharvest equipment, determination of some hydrodynamic properties of crops are necessary. the quality of products in global and local markets can be increased by applying these properties and receive economical benefits. for these purpose, two local varieties of apples in the east azerbaijan province, iran(asheghi and gare yapraq)were selected.ashegh...

M. Naghipour and M. Raoufi,

Most Codes such as API and BSI recommend Morison’s equation to estimate hydrodynamic forces on offshore structures. Significant differences exist among these Codes due to using different methods of analysis and estimation of force coefficients. In this paper, data from full scale tests have been used to evaluate random waves and uniform current actions on the smooth piles.&#10 Four time an...

Journal: :روش های عددی در مهندسی (استقلال) 0
مرتضی نقی پور و مسعود رئوفی m. naghipour and m. raoufi

most codes such as api and bsi recommend morison’s equation to estimate hydrodynamic forces on offshore structures. significant differences exist among these codes due to using different methods of analysis and estimation of force coefficients. in this paper, data from full scale tests have been used to evaluate random waves and uniform current actions on the smooth piles. four time and frequen...

Journal: :journal of chemical and petroleum engineering 2013
mona eftekhardadkhah seyed hassan hashemabadi

a modified model has been analytically developed to describe the induction time of an elliptic air bubble in contact with an elliptic hydrophobic oil droplet. the role of hydrophobicity was revealed in the slippage of liquid over the surfaces of bubble and droplet. in this condition, the analytical relationships for pressure distribution and consequently hydrodynamic resistance force through th...

Journal: :فرآوری و نگهداری مواد غذایی 0
احمد جهان بخشی دانشجوی کارشناسی ارشد/ دانشگاه ایلام رضا یگانه معاون آموزشی دانشکده کشاورزی/ دانشگاه ایلام ابوالفضل آخوندزاده یامچی دانشجوی کارشناسی ارشد/ دانشگاه ایلام

background and objectives: scolymus is one of most abundant plants of mountain areas iran, because of role in the digestion of food auxiliary is located the focus of attention consumers. in iran, more than 17 percent of crops in various stages of the supply becomes losses, which requires knowledge of physical properties, mechanical and hydrodynamic agricultural products. the existence of the in...

M. Naghipour and M. Raoufi,

Most Codes such as API and BSI recommend Morison’s equation to estimate hydrodynamic forces on offshore structures. Significant differences exist among these Codes due to using different methods of analysis and estimation of force coefficients. In this paper, data from full scale tests have been used to evaluate random waves and uniform current actions on the smooth piles. Four time and ...

2007
P. Szymczak Marek Cieplak

We incorporate hydrodynamic interactions in a structure-based model of ubiquitin and demonstrate that the hydrodynamic coupling may reduce the peak force when stretching the protein at constant speed, especially at larger speeds. Hydrodynamic interactions are also shown to facilitate unfolding at constant force and inhibit stretching by fluid flows. (Some figures in this article are in colour o...

In recent years, hydroforming process has been applied in different industries such as aerospace, automotive and military industries due to its advantages, such as high dimensional accuracy, capability of forming complicated parts and high drawing ratio. Hydrodynamic deep drawing with radial pressure is one type of hydroforming process. In this paper, forming of cylindrical cups in hydrodynamic...

Mona Eftekhardadkhah Seyed Hassan Hashemabadi,

A modified model has been analytically developed to describe the induction time of an elliptic air bubble in contact with an elliptic hydrophobic oil droplet. The role of hydrophobicity was revealed in the slippage of liquid over the surfaces of bubble and droplet. In this condition, the analytical relationships for pressure distribution and consequently hydrodynamic resistance force through th...

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