نتایج جستجو برای: viscoelastic rans model

تعداد نتایج: 2114868  

2016
Yury Rossikhin Marina Shitikova Guadalupe Estrada Meza

In the present paper, we consider the problem on a transverse impact of a viscoelastic sphere upon an elastic Bernoulli-Euler beam in a viscoelastic medium, the viscoelastic features of which are described by certain viscoelastic operators. The Young’s modulus of the impactor is the timedependent operator, which is defined via the standard linear solid fractional derivative model, while the bul...

2016
Yury A. Rossikhin Marina Shitikova Maria Guadalupe Estrada Meza

In the present paper, we consider the problem on a transverse impact of a viscoelastic sphere upon an elastic Bernoulli-Euler beam in a viscoelastic medium, the viscoelastic features of which are described by certain viscoelastic operators. The Young's modulus of the impactor is the time-dependent operator, which is defined via the standard linear solid fractional derivative model, while the bu...

2004
René Böringer Andreas Mitschele-Thiel Markus Bauer Michael Söllner

The paper provides a proposal for an MPLS-based transport network for future Radio Access Networks (RANs) and compares this with a regular IP-based transport network. Our MPLS-based approach takes into account the specific needs of current and future RANs especially with respect to QoS requirements and flexibility. In the paper we compare the MPLS-based solution with a regular IP-based network....

2015
Fei Lin Mohan D. Rao

iii Abstract The goal of this research is to provide a framework for vibro-acoustical analysis and design of a multiple-layer constrained damping structure. The existing research on damping and viscoelastic damping mechanism is limited to the following four mainstream approaches: modeling techniques of damping treatments/materials; control through the electrical-mechanical effect using the piez...

2002
J. Garćıa

One of the most interesting problems in fluid dynamics is the prediction of particleladen turbulent flows. These flows are as diverse as pollutant dispersion in the atmosphere and contaminant transport in industrial applications. An issue of primary importance for moderately dense suspensions concerns how particles affect the turbulent flow itself, the so-called two-way coupling. It is known th...

Journal: :Investigative ophthalmology & visual science 2008
Dianne H Glass Cynthia J Roberts Alan S Litsky Paul A Weber

PURPOSE To develop a method for evaluating viscosity and elasticity of the cornea and to examine the effect that both properties have on hysteresis. METHODS A three-component spring and dashpot model was created in Simulink in Matlab to represent the purely elastic and viscoelastic behavior of the cornea during a measurement using device called an ocular response analyzer (ORA). Values for el...

Journal: :Renewable Energy 2021

Reynolds-averaged Navier-Stokes (RANS) is one of the most cost-efficient approaches to simulate wind-farm-atmosphere interactions. However, applicability RANS-based methods always limited by accuracy turbulence closure models, which introduce various uncertainties into models. In this study, we estimate model-form in RANS simulations wind farms. For purpose, compare different models a large-edd...

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