Interfacial pattern formation in the presence of solidification and thermal convection

1990 ◽  
Vol 41 (2) ◽  
pp. 863-873 ◽  
Author(s):  
Layachi Hadji ◽  
Mark Schell ◽  
D. N. Riahi
Keyword(s):  
Pattern Formation ◽  
Thermal Convection

scholarly journals Pattern formation in spatially forced thermal convection

2012 ◽  
Vol 14 (5) ◽  
pp. 053010 ◽  
Author(s):  
S Weiss ◽  
G Seiden ◽  
E Bodenschatz
Keyword(s):  
Pattern Formation ◽  
Thermal Convection

scholarly journals Swimming in shear

2014 ◽  
Vol 744 ◽  
pp. 1-4 ◽  
Author(s):  
David Saintillan
Keyword(s):  
Pattern Formation ◽  
Shear Flow ◽  
Thermal Convection ◽  
Degrees Of Freedom ◽  
Theoretical Models ◽  
Dynamical Behaviour ◽  
Strong Similarity ◽  
Complex Patterns ◽  
Rayleigh Benard

AbstractThe complex patterns observed in experiments on suspensions of swimming cells undergoing bioconvection have fascinated biologists, physicists and mathematicians alike for over a century. Theoretical models developed over the last few decades have shown a strong similarity with Rayleigh–Bénard thermal convection, albeit with a richer dynamical behaviour due to the orientational degrees of freedom of the cells. In a recent paper, Hwang & Pedley (J. Fluid Mech., vol. 738, 2014, pp. 522–562) revisit previous models for bioconvection to investigate the effects of an external shear flow on pattern formation. In addition to casting light on new mechanisms for instability, their study demonstrates a subtle interplay between shear, swimming motions and bioconvection patterns.

Pattern formation in the splay Freedericks transition of a nematic side-group polysiloxane

1993 ◽  
Vol 3 (6) ◽  
pp. 865-889 ◽  
Author(s):  
Norbert Schwenk ◽  
Hans Wolfgang Spiess
Keyword(s):  
Pattern Formation ◽  
Side Group

Pattern Formation in Thin Polymer Films: A New Morphology

2000 ◽  
Vol 629 ◽  
Author(s):  
Jean-Loup Masson ◽  
Peter F. Green
Keyword(s):  
Growth Rate ◽  
Pattern Formation ◽  
Early Stage ◽  
Structural Evolution ◽  
Distinct Form ◽  
Thin Polymer Films ◽  
Intermediate Morphology ◽  
Thin Polymer ◽  
Nonwetting Liquid ◽  
Cylindrical Holes

ABSTRACTResearchers have shown that thin, nonwetting, liquid homopolymer films dewet substrates, forming patterns that reflect fluctuations in the local film thickness. These patterns have been shown to be either discrete cylindrical holes or bicontinuous “spinodal-like” patterns. In this paper we show the existence of a new morphology. During the early stage of dewetting, discrete highly asymmetric holes appear spontaneously throughout the film. The nucleation rate of these holes is faster than their growth rate. The morphology of the late stage of evolution, after 18 days, is characterized by a bicontinuous pattern, distinct form conventional spinodal dewetting patterns. This morphology has been observed for a range of film thicknesses between 7.5 and 21nm. The structural evolution of this intermediate morphology is discussed.

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