scholarly journals Comparison of Models for Mixture Transport Properties for Numerical Simulations of Ablative Heat-Shields

2013 ◽  
Author(s):  
Hicham Alkandry ◽  
Iain Boyd ◽  
Alexandre Martin
Keyword(s):  
Numerical Simulations ◽  
Transport Properties ◽  
Heat Shields

Comparison of transport properties models for numerical simulations of Mars entry vehicles

2017 ◽  
Vol 130 ◽  
pp. 24-33 ◽  
Author(s):  
Jiaao Hao ◽  
Jingying Wang ◽  
Zhenxun Gao ◽  
Chongwen Jiang ◽  
Chunhian Lee
Keyword(s):  
Numerical Simulations ◽  
Transport Properties

scholarly journals Trapping, gliding, vaulting: transport of semiflexible polymers in periodic post arrays

Soft Matter ◽  
2020 ◽  
Vol 16 (23) ◽  
pp. 5534-5544
Author(s):  
Brato Chakrabarti ◽  
Charles Gaillard ◽  
David Saintillan
Keyword(s):  
Numerical Simulations ◽  
Transport Properties ◽  
Semiflexible Polymers

We use numerical simulations to investigate the dynamics, conformations, and transport properties of semiflexible polymers flowing through periodic post arrays.

scholarly journals Comparison of Transport Properties Models for Flowfield Simulations of Ablative Heat Shields

2014 ◽  
Vol 28 (4) ◽  
pp. 569-582 ◽  
Author(s):  
Hicham Alkandry ◽  
Iain D. Boyd ◽  
Alexandre Martin
Keyword(s):  
Transport Properties ◽  
Heat Shields

scholarly journals Transport properties of solid foams having circular strut cross section using pore scale numerical simulations

2017 ◽  
Vol 54 (8) ◽  
pp. 2351-2370 ◽  
Author(s):  
Yann Jobic ◽  
Prashant Kumar ◽  
Frédéric Topin ◽  
René Occelli
Keyword(s):  
Numerical Simulations ◽  
Transport Properties ◽  
Cross Section ◽  
Pore Scale ◽  
Solid Foams

scholarly journals A Microfluidic Device to Establish Concentration Gradients Using Reagent Density Differences

2010 ◽  
Vol 132 (12) ◽  
Author(s):  
Qingjun Kong ◽  
Richard A. Able ◽  
Veronica Dudu ◽  
Maribel Vazquez
Keyword(s):  
Numerical Simulations ◽  
Transport Properties ◽  
Microfluidic Device ◽  
Life Science ◽  
Chemical Concentration ◽  
Spatial Concentration ◽  
Concentration Gradients ◽  
Transport Models ◽  
Microfluidic Flow ◽  
Over Time

Microfabrication has become widely utilized to generate controlled microenvironments that establish chemical concentration gradients for a variety of engineering and life science applications. To establish microfluidic flow, the majority of existing devices rely upon additional facilities, equipment, and excessive reagent supplies, which together limit device portability as well as constrain device usage to individuals trained in technological disciplines. The current work presents our laboratory-developed bridged μLane system, which is a stand-alone device that runs via conventional pipette loading and can operate for several days without need of external machinery or additional reagent volumes. The bridged μLane is a two-layer polydimethylsiloxane microfluidic device that is able to establish controlled chemical concentration gradients over time by relying solely upon differences in reagent densities. Fluorescently labeled Dextran was used to validate the design and operation of the bridged μLane by evaluating experimentally measured transport properties within the microsystem in conjunction with numerical simulations and established mathematical transport models. Results demonstrate how the bridged μLane system was used to generate spatial concentration gradients that resulted in an experimentally measured Dextran diffusivity of (0.82±0.01)×10−6 cm2/s.

scholarly journals Ideal circle microswimmers in crowded media

Soft Matter ◽  
2019 ◽  
Vol 15 (3) ◽  
pp. 452-461 ◽  
Author(s):  
Oleksandr Chepizhko ◽  
Thomas Franosch
Keyword(s):  
Numerical Simulations ◽  
Transport Properties ◽  
Large Scale ◽  
Critical Density ◽  
Anomalous Transport ◽  
Enhanced Diffusion

Using large-scale numerical simulations we show that ideal circle microswimmers experience crowding-enhanced diffusion. We study in detail their anomalous transport properties at a critical density of obstacles.

scholarly journals Lagrangian descriptors and the assessment of the predictive capacity of oceanic data sets

2014 ◽  
Vol 21 (3) ◽  
pp. 677-689 ◽  
Author(s):  
C. Mendoza ◽  
A. M. Mancho ◽  
S. Wiggins
Keyword(s):  
Numerical Simulations ◽  
Transport Properties ◽  
Current System ◽  
Data Sets ◽  
Florida Current ◽  
Predictive Capacity ◽  
Lagrangian Transport ◽  
Hyperbolic Trajectories ◽  
Hycom Model ◽  
Lagrangian Descriptors

Abstract. We use a recently developed Lagrangian transport tool, Lagrangian descriptors, to compare the transport properties of data distributed by AVISO and numerical simulations obtained from the HYCOM model in the Yucatán–Florida current system. Our data correspond to the months from June through August 2010. Structures obtained from HYCOM are noisier than those from AVISO; however, both AVISO and HYCOM succeed in identifying Lagrangian structures that influence the paths of drifters, such as eddies, currents, lobes, etc. We find evidence in which AVISO gives the positions of important hyperbolic trajectories in a manner that is inconsistent with the trajectories of the drifters, while for the same examples HYCOM succeeds to this end.

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