ON THE DEFORMATION OF DROPS AND BUBBLES WITH VARYING INTERFACIAL TENSION
作者:
S.S. SADHAL,
ROBERTE. JOHNSON,
期刊:
Chemical Engineering Communications
(Taylor Available online 1986)
卷期:
Volume 46,
issue 1-3
页码: 97-109
ISSN:0098-6445
年代: 1986
DOI:10.1080/00986448608911399
出版商: Taylor & Francis Group
关键词: Drops;Bubbles;Deformation;Interfacial tension;Surfactant
数据来源: Taylor
摘要:
In this paper the deformation of a translating fluid drop is examined in the limit of low Reynolds and capillary numbers. The general case of an arbitrarily varying interfacial tension is considered here. With the capillary number as a perturbation parameter, an expansion is carried out for small deformation to satisfy the normal stress condition. This leads to a rapidly converging Legendre series expansion for the deformation. This general result is applied to the special case of a translating drop with a stagnant cap of surfactant. An interesting feature of this special case is that although the shear stress at the interface has a square root singularity, the total normal stress is non-singular.
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