Dynamic equilibrium shape of a film of viscous or viscoelastic liquid

Entov, V. M.; Kestenboim, Kh. S.; Рожков, А. Н.; Sharchevich, L. I.

doi:10.1007/bf01342605

Cited by 13 publications

(3 citation statements)

References 9 publications

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“…The equation of motion follows from the integral mass and momentum balance for the motionless control volume W 1 displayed in figure 6 in a one-dimensional approximation (see also Entov et al 1980a;Entov 1982;Yarin 1993;Marmottant et al 2000) is…”

Section: (B) Equation Of Motionmentioning

confidence: 99%

Impact of drops of surfactant solutions on small targets

Рожков¹,

Prunet-Foch²,

Vignes-Adler³

2010

Proc. R. Soc. A.

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The collisions of drops of surfactant solutions (dioctyl sulfosuccinate sodium salt (DOS) and trisiloxane oxypropylene polyoxyethylene (Silwett L77)) with small disc-like targets were studied both experimentally and theoretically. Upon impact, the drops spread very fast beyond the target in the shape of a thin lamella surrounded by a thick rim. No significant difference between water and surfactant solutions was observed in the early stage of the impact. But the collapse stages were very different. In particular, the lamellas of solutions of Silwett L77 disintegrated owing to a spontaneous nucleation of holes, giving to the lamella a web-like structure prior to its break-up. In contrast, lamellas of DOS solutions collapsed like water lamellas, except that the maximum diameter and the lifetime of the lamella of the most concentrated DOS solution were significantly increased compared with pure water and other surfactant solutions. A theoretical analysis shows that the observed instability effects in the lamella and the increase in the size and lifetime of the lamella can be caused by the coupling between liquid inertia and Marangoni stresses.

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Section: (B) Equation Of Motionmentioning

confidence: 99%

Impact of drops of surfactant solutions on small targets

Рожков¹,

Prunet-Foch²,

Vignes-Adler³

2010

Proc. R. Soc. A.

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“…At the moment the lamella reaches its maximal diameter d m , the liquid in the rim is subjected to the maximal possible polar extension, i.e. The relative change of the liquid velocity v in the lamella is | v/v i | ∼ max(Gλ 2 r /ρv 2 i , Gλ 2 χ /ρv 2 i ) [26]. As it was just mentioned that λ m r = 2, λ m χ = 10.9, it means that the elastic polar deformation has a larger effect on the lamella dynamics than the radial one.…”

Section: Lamella Maximal Sizementioning

confidence: 99%

Dynamics and disintegration of drops of polymeric liquids

Рожков

Prunet-Foch

Vignes-Adler

2006

Journal of Non-Newtonian Fluid Mechanics

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“…In [40][41][42] investigations of the effect of polymeric additives on the dynamics of bell-and fan-shaped free liquid films were described. It was found that the shape of these films, the propagation of wave perturbations along the films, and the nature of the breakup when the film is cut by a fine needle significantly depend on the elastic stress field in the film.…”

Section: Dynamics and Disintegration Of Jets Of Polymeric Liquidsmentioning

confidence: 99%