نتایج جستجو برای: newtonian uid

تعداد نتایج: 12858  

2012
Johannes V. SOULIS Kypriani V. SERALIDOU Yiannis S. CHATZIZISIS George D. GIANNOGLOU

The capabilities and limitations of various molecular viscosity models, when testing Left Coronary Artery (LCA) tree, were analyzed via: molecular viscosity, local and global non-Newtonian importance factors, Wall Shear Stress (WSS) and Wall Shear Stress Gradient (WSSG). Seven non-Newtonian molecular viscosity models, plus the Newtonian one, were compared. Dense grid of 620000 nodes located, mo...

Journal: :Journal of biomechanics 2016
Marcello Iasiello Kambiz Vafai Assunta Andreozzi Nicola Bianco

In this work, non-Newtonian effects on Low-Density Lipoprotein (LDL) transport across an artery are analyzed with a multi-layer model. Four rheological models (Carreau, Carreau-Yasuda, power-law and Newtonian) are used for the blood flow through the lumen. For the non-Newtonian cases, the arterial wall is modeled with a generalized momentum equation. Convection-diffusion equation is used for th...

Journal: :International Journal of Informatics and Communication Technology 2023

<p>Wirelessly based security applications have exploded as a result of modern technology. To build and/or implement access control systems, many types wireless communication technologies been deployed. quick response (QR code) is contactless technology that extensively utilised in variety sectors, including control, library book tracking, supply chains, and tollgate among others. This pap...

Journal: :Journal of biomechanics 2006
Barbara M Johnston Peter R Johnston Stuart Corney David Kilpatrick

This study looks at pulsatile blood flow through four different right coronary arteries, which have been reconstructed from biplane angiograms. A non-Newtonian blood model (the Generalised Power Law), as well as the usual Newtonian model of blood viscosity, is used to study the wall shear stress in each of these arteries over the entire cardiac cycle. The difference between Newtonian and non-Ne...

2008
Chih-Hung Wang

In general relativity, quasi-local energy-momentum expressions have been constructed from various formulae. However, Newtonian theory of gravity gives a well known and an unique quasi-local mass expression (surface integration). Since geometrical formulation of Newtonian gravity has been established in the covariant Newtonian space-time, it provides a covariant approximation from relativistic t...

Journal: :international journal of industrial mathematics 0
ar. ‎haghighi‎ department of mathematics, urmia university of technology, urmia, ‎iran. s. asadi ‎chalak‎ department of mathematics, urmia university of technology, urmia, ‎iran.

in the present study, the nonlinear model of non-newtonian blood flow in cosine-shape stenosed elastic artery is numerically examined. the model is carried out for axisymmetric, two-dimensional and fully developed blood flow. the vessel wall is assumed to be have time-dependent radius that is important factor for study of blood flow. the cosine-shape stenosis convert to rigid artery by using a ...

1994
Po-Shu Chen

This paper presents software for solving the non-conforming uid structure interfaces in aeroelastic simulation. It reviews the algorithm of interpolation and integration, highlights the exibility and the user-friendly feature that allows the user to select the existing structure and uid package, like NASTRAN and CLF3D, to perform the simulation. The presented software is validated by computing ...

Journal: :Science China. Materials 2022

High-quality β-Ga2O3 films were epitaxially grown by using metalorganic chemical vapor deposition (MOCVD) with different donor concentrations, and their shallow states investigated the temperature-dependent Hall measurement secondary ion mass spectroscopy (SIMS) analysis. Two levels ionization energies of ∼36 ∼140 meV extracted. It is found that unintentional doping (UID) effects in MOCVD contr...

2012
Quoc-Hung Nguyen

A non-Newtonian fluid is a fluid whose flow properties differ in many ways from those of Newtonian fluids. Most commonly the viscosity of non-Newtonian fluids is not independent of shear rate or shear rate history. In practice, many fluid materials exhibits non-Newtonian fluid behavior such as: salt solutions, molten, ketchup, custard, toothpaste, starch suspensions, paint, blood, and shampoo e...

In the present paper, we get exact solutions of Magnetohydrodynamic (MHD) of the fractionalized three-dimensional flow of Newtonian fluid with porous and heat transfer through the traveling wave parameter. The governing equations are produced dependent on established Navier-stokes equations which can be diminished to ordinary differential equation by wave parameter ξ=ax+by+nz+Utα/Γ(α...

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