Flow through a plateau border of cellular foam


Autoria(s): Desai, Dilip; Kumar, Rajinder
Data(s)

1982

Resumo

Experimentally measured average velocities through plateau borders of stationary cellular foam, when compared with those calculated with the assumption of rigid Plateau Border walls, show that the assumption of rigid walls severely underestimates the velocities. An analysis of the situation wherein plateau border walls have velocities, as decided by the surface viscosity of the system, is presented here. The plateau border is idealized as a pipe of equilateral triangular cross-section with vertices of the triangle having zero velocity. The pertinent form of Navier-Stoke's equations with inhomogeneous boundary conditions and its solution through a procedure of successive approximations is presented in dimensionless form. The solution reduces to the known solution of slow steady flow through a triangular pipe, when surface viscosity is infinite. Results indicate that the assumption of rigid plateau border walls is valid only when value of the inverse of dimensionless surface viscosity is less than 0.044. Beyond that the assumption severely underestimates the flow and the effect of nonrigidity of the wall must be considered.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/20321/1/fulltext.pdf

Desai, Dilip and Kumar, Rajinder (1982) Flow through a plateau border of cellular foam. In: Chemical Engineering Science, 37 (9). pp. 1361-1370.

Publicador

Elsevier Science

Relação

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFK-444NXHY-C6&_user=512776&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000025298&_version=1&_urlVersion=0&_userid=512776&md5=6d5c6a650bcdcc3395f61dff0c37c7eb

http://eprints.iisc.ernet.in/20321/

Palavras-Chave #Chemical Engineering
Tipo

Journal Article

PeerReviewed