نتایج جستجو برای: hydrodynamic

تعداد نتایج: 24804  

Journal: :Journal of Applied Mechanics 1982

Journal: :Journal of Physics G: Nuclear and Particle Physics 2004

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2010
Preethi L Chandran Mohammad R K Mofrad

We introduce a method to incorporate hydrodynamic interaction in a model of semiflexible filament dynamics. Hydrodynamic screening and other hydrodynamic interaction effects lead to nonuniform drag along even a rigid filament, and cause bending fluctuations in semiflexible filaments, in addition to the nonuniform Brownian forces. We develop our hydrodynamics model from a string-of-beads idealiz...

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: :نشریه دانشکده فنی 0
رحمت ستوده قره باغ لیلا نیک نام نوید مستوفی

in this paper, a batch hydrogenation reactor performance was modeled using a hydrodynamic and reaction sub-models. the reaction expressions were obtained from the information reported in literature. experimental studies were conducted in order to generate the experimental data needed to validate the model. the comparison between the experimental data and model predictions seems quite satisfacto...

ژورنال: مهندسی دریا 2019

This paper presents the effect of hydrodynamic parameters of the two-body converters of a point wave absorber on the amount of power output. This converter includes two submerged and floating bodies which are connected to the spring-damper system. The whole of the converter is connected to the sea bed by mooring catenary. The relative displacement of the floating body and the submerged body is ...

Surface-piercing propellers have been widely used in light and high-speed vessels because of their superior performance. One of the major steps in propeller selection algorithm is the determination of thrust as well as torque hydrodynamic coefficients. For the purpose of simplifying design and selection procedure, some relations are presented for determining hydrodynamic coefficients in some st...

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: :journal of computational & applied research in mechanical engineering (jcarme) 2012
r. mestiri* f. aloui s. ben nasrallah

the technique used to control the airflow is based on the electro-hydrodynamic actuator which is also called plasma actuator. this actuator ensures the airflow control thanks to the electric wind created by the electrical corona discharge. this ionic wind is developed at the profile surface tangential to the initial free airflow so that it has a significant effect on the boundary layer flow. th...

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...

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