نتایج جستجو برای: viscosity of liquids

تعداد نتایج: 21169235  

2017
A. F. Payam W. Trewby K. Voïtchovsky

Many industrial and technological applications require precise determination of the viscosity and density of liquids. Such measurements can be time consuming and often require sampling substantial amounts of the liquid. These problems can partly be overcome with the use of microcantilevers but most existing methods depend on the specific geometry and properties of the cantilever, which renders ...

2008
Daniele Giordano James K. Russell Donald B. Dingwell

Article history: The viscosity of silicate melt Received 7 August 2007 Received in revised form 19 March 2008 Accepted 27 March 2008 Available online 9 April 2008 Editor: C.P. Jaupart

2016
Otávio Augusto Capeloto Vitor Santaella Zanuto Luis Carlos Malacarne Mauro Luciano Baesso Gustavo Vinicius Bassi Lukasievicz Stephen Edward Bialkowski Nelson Guilherme Castelli Astrath

We induce nanometer-scale surface deformation by exploiting momentum conservation of the interaction between laser light and dielectric liquids. The effect of radiation force at the air-liquid interface is quantitatively assessed for fluids with different density, viscosity and surface tension. The imparted pressure on the liquids by continuous or pulsed laser light excitation is fully describe...

Journal: :The Journal of chemical physics 2009
Akihiro Kushima Xi Lin Ju Li Jacob Eapen John C Mauro Xiaofeng Qian Phong Diep Sidney Yip

We describe an atomistic method for computing the viscosity of highly viscous liquids based on activated state kinetics. A basin-filling algorithm allowing the system to climb out of deep energy minima through a series of activation and relaxation is proposed and first benchmarked on the problem of adatom diffusion on a metal surface. It is then used to generate transition state pathway traject...

2009
Ramesh L. Gardas João A. P. Coutinho

Thermophysical and transport properties of ionic liquids are required for the design of processes and products. Yet the experimental data available are scarce and often contradictory. Based on experimental data collected from the literature, group contribution methods were developed for the estimation of viscosity, electrical conductivity, thermal conductivity, refractive index, isobaric expans...

2009
G. G. N. Angilella N. H. March F. M. D. Pellegrino R. Pucci

Starting from relativistic quantum field theories, Kovtun et al. (2005) have quite recently proposed a lower bound η/s ≥ ~/(4πkB), where η is the shear viscosity and s the volume density of entropy for dense liquids. If their proposal can eventually be proved, then this would provide key theoretical underpinning to earlier semiempirical proposals on the relation between a transport coefficient ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2007
samad ahadian siamak moradian farhad sharif mohammad amani tehran mohsen mohseni

an artificial neural network (ann) was used to analyse the capillary rise in porous media. wetting experiments were performed with fifteen liquids and fifteen different powders. the liquids covered a wide range  of  surface  tension ( 15.45-71.99  mj/m2 )  and  viscosity (0.25-21 mpa.s). the powders also provided an acceptable range of particle size (0.012-45 μm) and surface free energy (25.54-...

Journal: :JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1975

Journal: :Acta Chemica Scandinavica 1955

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