Length Scale of Dynamic Heterogeneity in Supercooledd-Sorbitol:  Comparison to Model Predictions

2003 ◽  
Vol 107 (2) ◽  
pp. 459-464 ◽  
Author(s):  
M. D. Ediger
Keyword(s):  
Length Scale ◽  
Dynamic Heterogeneity ◽  
Model Predictions

Time scale of dynamic heterogeneity in model ionic liquids and its relation to static length scale and charge distribution

2015 ◽  
Vol 17 (43) ◽  
pp. 29281-29292 ◽  
Author(s):  
Sang-Won Park ◽  
Soree Kim ◽  
YounJoon Jung
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Charge Distribution ◽  
Power Law ◽  
Structural Relaxation ◽  
Time Scale ◽  
Length Scale ◽  
Dynamic Heterogeneity ◽  
General Power

We find a general power-law behavior: , where ζdh ≈ 1.2 for all the ionic liquid models, regardless of charges and the length scale of structural relaxation.

scholarly journals Non-Gaussianity of the van Hove function and dynamic-heterogeneity length scale

2018 ◽  
Vol 98 (2) ◽  
Author(s):  
Bhanu Prasad Bhowmik ◽  
Indrajit Tah ◽  
Smarajit Karmakar
Keyword(s):  
Length Scale ◽  
Dynamic Heterogeneity

Length scale of dynamic heterogeneity in supercooled glycerol near Tg

2001 ◽  
Vol 114 (17) ◽  
pp. 7299-7302 ◽  
Author(s):  
S. A. Reinsberg ◽  
X. H. Qiu ◽  
M. Wilhelm ◽  
H. W. Spiess ◽  
M. D. Ediger
Keyword(s):  
Length Scale ◽  
Dynamic Heterogeneity

A Multiscale Modeling Method for the Creep Behavior of SnAg Solder Alloys

2007 ◽  
Author(s):  
Min Pei ◽  
Jianmin Qu
Keyword(s):  
Multiscale Modeling ◽  
Creep Test ◽  
Eutectic Phase ◽  
Creep Model ◽  
Length Scale ◽  
Length Scales ◽  
Multiple Length Scales ◽  
Model Predictions ◽  
Snag Solder ◽  
Micrometer Size

In this paper, a microstructure-dependent creep model is developed that accounts for the hierarchal microstructure at multiple length scales. The model considers three distinguishable phases in the solder alloy at two different length scales: at the larger scale Sn dendrites of micrometer size are embedded in a homogeneous eutectic phase; at a much smaller length scale the eutectic phase consists of submicron size Ag3Sn particles embedded in a homogeneous Sn matrix. The model predictions agree well with creep test data of RE doped SnAg solders.

A Note on a Generalized Eddy-Viscosity Hypothesis

1992 ◽  
Vol 114 (3) ◽  
pp. 463-466 ◽  
Author(s):  
P. Andreasson ◽  
U. Svensson
Keyword(s):  
Boundary Layer ◽  
Shear Stress ◽  
Velocity Gradient ◽  
Eddy Viscosity ◽  
Channel Flows ◽  
Length Scale ◽  
Asymmetric Channel ◽  
Boundary Layer Flows ◽  
Turbulent Length Scale ◽  
Model Predictions

The standard eddy-viscosity concept postulates that zero velocity gradient is accompanied by zero shear stress. This is not true for many boundary layer flows: wall jets, asymmetric channel flows, countercurrent flows, for example. The generalized eddy-viscosity hypothesis presented in this paper, relaxes this limitation by recognizing the influence of gradients in the turbulent length scale and the shear. With this new eddy-viscosity concept, implemented into the standard k–ε model, predictions of some boundary layer flows are made. The modelling results agree well with measurements, where predictions with the standard eddy-viscosity concept are known to fail.

Interfacial Properties of Polymer Nanocomposites: Role of Chain Rigidity and Dynamic Heterogeneity Length Scale

2017 ◽  
Vol 50 (6) ◽  
pp. 2397-2406 ◽  
Author(s):  
Shiwang Cheng ◽  
Bobby Carroll ◽  
Wei Lu ◽  
Fei Fan ◽  
Jan-Michael Y. Carrillo ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Interfacial Properties ◽  
Length Scale ◽  
Dynamic Heterogeneity ◽  
Chain Rigidity

Dynamic Heterogeneity and Cooperative Length Scale at Dynamic Glass Transition in Glass Forming Liquids

2015 ◽  
Vol 48 (22) ◽  
pp. 8219-8231 ◽  
Author(s):  
Bidur Rijal ◽  
Laurent Delbreilh ◽  
Allisson Saiter
Keyword(s):  
Glass Transition ◽  
Length Scale ◽  
Dynamic Heterogeneity ◽  
Glass Forming

scholarly journals Heterogeneous dynamics and its length scale in simple ionic liquid models: a computational study

2016 ◽  
Vol 18 (9) ◽  
pp. 6486-6497 ◽  
Author(s):  
Soree Kim ◽  
Sang-Won Park ◽  
YounJoon Jung
Keyword(s):  
Ionic Liquid ◽  
Computational Study ◽  
Model Systems ◽  
Coarse Grained ◽  
Length Scale ◽  
Dynamic Heterogeneity ◽  
Heterogeneous Dynamics ◽  
Liquid Model

We numerically investigate the dynamic heterogeneity and its length scale found in coarse-grained ionic liquid model systems.

Hierarchal Modeling of Creep Behavior of SnAg Solder Alloys

2008 ◽  
Vol 130 (3) ◽  
Author(s):  
Min Pei ◽  
Jianmin Qu
Keyword(s):  
Creep Test ◽  
Creep Behavior ◽  
Creep Model ◽  
Length Scale ◽  
Eutectic Region ◽  
Length Scales ◽  
Multiple Length Scales ◽  
Model Predictions ◽  
Snag Solder ◽  
Micrometer Size

In this paper, a microstructure-dependent creep model is developed that accounts for the hierarchal microstructure at multiple length scales. The model considers three distinguishable phases in the solder alloy at two different length scales: at the larger scale Sn dendrites of micrometer size are embedded in a homogeneous eutectic region; at a much smaller length scale the eutectic region consists of submicron size Ag3Sn particles embedded in a homogeneous Sn matrix. The model predictions agree well with creep test data of lanthanum doped SnAg solders.

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