نتایج جستجو برای: oscillatory plates

تعداد نتایج: 56201  

2015
A. Mondal

The present study aims to identify flow characteristics and heat transfer due to the body acceleration for blood through an porous artery exposed to a vibration environment. Blood flow is considered here to be governed by the equation of a Newtonian fluid model. Oscillatory flow in a porous channel is considered in this study. It pertains to a situation when the flow takes place between two por...

Enhancement of heat and mass transfer and decrease of energy dissipation are great necessities of the evolution of fluid flow devices. Utilizing oscillatory or pulsatile fluid flow for periodic disturbing of velocity and thermal boundary layers is one of the methods with exciting results. Passive methods of generating oscillatory flow are preferred to active methods because of simplicity, no ne...

Journal: :Zootaxa 2014
Hu Li Ren-Huai Dai Zi-Zhong Li

The (nine) valid species of Japanagallia Ishihara, 1955 from Guizhou, and Yunnan Provinces, and Guangxi Autonomous Region of Southwest China are reviewed and four new species J. gracilenta sp. nov., J. neohamata sp. nov., J. trifurcata sp. nov. and J. viraktamathi sp. nov. are described and illustrated. These species can be distinguished by unique features of the aedeagus. J. hamata Zhang & Li,...

2015
Morteza Gholami Ehsan Saboory Sogol Mehraban Afsaneh Niakani Nafiseh Banihabib Mohamad-Reza Azad Javid Fereidoni

Morphine and tramadol which have analgesic effects can be administered acutely or chronically. This study tried to investigate the effect of these drugs at various times by using different methods of administration (intraperitoneal, oral, acute and chronic). Sixty adult female rats were divided into six groups. They received saline, morphine or tramadol (20 to 125 mg/Kg) daily for 15 days. A ho...

Journal: :Mathematics 2021

Some unsteady motions of incompressible upper-convected Maxwell (UCM) fluids with exponential dependence viscosity on the pressure are analytically studied. The fluid motion between two infinite horizontal parallel plates is generated by lower plate, which applies time-dependent shear stresses to fluid. Exact expressions, in terms standard Bessel functions, established both for dimensionless ve...

Clean energy harvesting and usage has gained considerable attention in the last few decades. While the horizontal axis wind turbines have been used extensively, they have certain defects and functional limitations. In the present paper, a novel oscillatory wind turbine is proposed. The conceptual design of the new turbine together with its configuration is explained. Dynamical equations of the ...

Journal: :Physics of Fluids 2023

Wave-induced oscillations of submerged horizontal plates are studied by conducting laboratory experiments and developing theoretical computational models. These models include a linear solver based on the Green-function method, nonlinear model Green–Naghdi wave equations, fluid dynamics. The plate oscillates in vertical direction due to oscillatory loads. Oscillations controlled use spring-damp...

Linear stability of double diffusive convection of Darcy-Maxwell fluid with Soret and Dufour effects is investigated. The effects of the Soret and Dufour numbers, Lewis number, relaxation time and solutal Darcy Rayleigh number on the stationary and oscillatory convection are presented graphically. The Dufour number enhances the stability of Darcy-Maxwell fluid for stationary convection while it...

Journal: :international journal of advanced design and manufacturing technology 0
iraj rajabi center of excellence for research in advance materials and structures, k.n. toosi university of technology, tehran, iran. s.m.r. khalili center of excellence for research in advance materials and structures, k.n. toosi university of technology, tehran, iran. m. shariyat engineering, k.n. toosi university of technology, tehran, iran.

there exist simple theories to predict the strain of sandwich structures under a bending load and specific support conditions. although theoretical predictions are highly effective, but the role of testing in validation of these theories and their progress is undeniable. the main goal of the present paper is to prepare a test instruction in order to minimize the error of data acquisition and th...

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