Comments on ‘Use of similarity solutions for the problem of a wetting front — a question of unique representation’ by Y. Nakano

This paper re-evaluates the significance of Sir Curtis Seretse, a black character from the 1960s television series Department S (ITV 1969-70) which has largely been ignored. While earlier critical and academic discourse of Department S has primarily centred on the flamboyant Jason King, the importance of Seretse’s character has been overlooked. Seretse, as the head of Department S, is in a position of authority and power over the other (white) characters of the show. Furthermore, he represents a highly educated character that converses on equal terms with Prime Ministers and Presidents, a unique representation of a black character on British television at that time. Seretse’s appearance on prime time television, at a period when black performers in the media were invariably confined to little more than token characters, is therefore worthy of further attention. This paper examines how Seretse represents a different type of black character not previously seen on British television, when compared to the representations of racial problems on other television crime dramas.

Download Full-text

Chemotaxis in shear flow: Similarity solutions of the steady‐state chemoattractant and bacterial distributions

AIChE Journal ◽

10.1002/aic.16713 ◽

2019 ◽

Vol 65 (10) ◽

Author(s):

Suin Shim ◽

Howard A. Stone ◽

Roseanne M. Ford

Keyword(s):

Steady State ◽

Shear Flow ◽

Similarity Solutions ◽

Flow Similarity

Download Full-text

Wetting front dynamics in an isotropic porous medium

Journal of Fluid Mechanics ◽

10.1017/jfm.2012.16 ◽

2012 ◽

Vol 694 ◽

pp. 399-407 ◽

Cited By ~ 10

Author(s):

Yulii D. Shikhmurzaev ◽

James E. Sprittles

Keyword(s):

Porous Medium ◽

Incompressible Liquid ◽

Porous Matrix ◽

Viscous Incompressible Liquid ◽

Pore Scale ◽

Wetting Front ◽

Model Case ◽

New Approach ◽

Threshold Phenomena ◽

Front Dynamics

AbstractA new approach to the modelling of wetting fronts in porous media on the Darcy scale is developed, based on considering the types (modes) of motion the menisci go through on the pore scale. This approach is illustrated using a simple model case of imbibition of a viscous incompressible liquid into an isotropic porous matrix with two modes of motion for the menisci, the wetting mode and the threshold mode. The latter makes it necessary to introduce an essentially new technique of conjugate problems that allows one to link threshold phenomena on the pore scale with the motion on the Darcy scale. The developed approach (a) makes room for incorporating the actual physics of wetting on the pore scale, (b) brings in the physics associated with pore-scale thresholds, which determine when sections of the wetting front will be brought to a halt (pinned), and, importantly, (c) provides a regular framework for constructing models of increasing complexity.

Download Full-text