نتایج جستجو برای: wave effect

تعداد نتایج: 1833471  

ژورنال: مهندسی دریا 2015

Oscillating water column (OWC) is one of the wave energy converting devices available. In this article, a numerical model has been introduced to simulate wave interaction with OWC in one dimensional plane. Mild slope equations have been used in one dimension. The pressure and water elevation inside OWC have been calculated using an iterative method. Also an absorbing boundary is used at the beg...

The present investigation deals with the propagation of waves in a micropolar transversely isotropic layer. Secular equations for symmetric and skew-symmetric modes of wave propagation in completely separate terms are derived. The amplitudes of displacements and microrotation were also obtained. Finally, the numerical solution was carried out for aluminium epoxy material and the dispersion curv...

2005
Branislav K. Nikolić Liviu P. Zârbo

We introduce the spinand momentum-dependent force operator, which is defined by the Hamiltonian of a clean semiconductor quantum wire with homogeneous Rashba spin-orbit SO coupling attached to two ideal i.e., free of spin and charge interactions leads. Its expectation value in the spin-polarized electronic wave packet injected through the leads explains why the center of the packet gets deflect...

Journal: :journal of solid mechanics 0
r kumar department of mathematics, kurukshetra university kurukshetra-136119, haryana , india p sharma department of mathematics, kurukshetra university kurukshetra-136119, haryana , india

in this paper the propagation of harmonic plane waves in a homogeneous anisotropic magneto-piezothermoelastic diffusive body with fractional order derivative is studied. the governing equations for a homogeneous transversely isotropic body in the context of the theory of thermoelasticity with diffusion given by sherief et al. [1] are considered as a special case. it is found that three types of...

Steep, short-crested waves, as well as a large variety of three-dimensional propagating wave patterns have been created in laboratory, utilizing a plunging half-cone. Monochromatic waves, over a range of frequencies and amplitudes through breaking and including soliton wave groups near resonance, have been observed and studied in a small wave flume. This monochromatic wavemaker creates complex ...

ژورنال: مهندسی دریا 2011
آقا کوچک, علی اکبر, رعنایی, علیرضا,

In general, Lay and Tow methods are the two most common methods of offshore pipeline installation. In the shallow waters, considering the restrictions of Lay barge, Tow method is usually more appropriate. In this method, pipestring is fabricated on-shore and then it is launched into water. Then, according to environmental conditions and restrictions, the pipeline is towed to the installation s...

Journal: :international journal of nano dimension 0
m. falahaty naghibi school of mechanical enginnering, shahid rajaee teacher training university, tehran, iran. m. rahimi-esbo young researchers and elite club, buin zahra branch, islamic azad university, buin zahra, iran. r. mohammadyari young researchers and elite club, buin zahra branch, islamic azad university, buin zahra, iran. k. mobini school of mechanical enginnering, shahid rajaee teacher training university, tehran, iran.

using of nanofluids and ducts with corrugated walls are both supposed to enhance heat transfer, by increasing the heat transfer fluid conductivity and the heat transfer area respectively. use of a diverging duct with a jet at inlet section may further increase heat transfer by creating recirculation zones inside the duct. in this work two-dimensional incompressible laminar flow of a nanofluid e...

Journal: :ماشین های کشاورزی 0
رسول معمار دستجردی سعید مینایی محمد هادی خوش تقاضا

development of ultrasound technique has not been progressing for evaluating the internal quality of fruits as fast as that of processed foods. in this research for quality assessment of pear fruit (shah miveh variety) an ultrasonic measurement system was constructed to transmit and receive the ultrasonic waves. the apparatus included a pulser-receiver, a pair of 75 khz ultrasonic transducers wi...

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