The Love I Give To You

Title Onlyhttps://scholarsjunction.msstate.edu/cht-sheet-music/11502/thumbnail.jp

She Left Me For A Teddy Bear

Photograph of Al. H. Wilson; Illustration of roses to left and right of photographhttps://scholarsjunction.msstate.edu/cht-sheet-music/11283/thumbnail.jp

As The Years Roll On

https://digitalcommons.library.umaine.edu/mmb-vp/1174/thumbnail.jp

Erin\u27s Isle

https://digitalcommons.library.umaine.edu/mmb-vp/5828/thumbnail.jp

Helen

https://digitalcommons.library.umaine.edu/mmb-vp/1442/thumbnail.jp

Rivulet flow of generalized Newtonian fluids

Steady unidirectional gravity-driven flow of a uniform thin rivulet (i.e. a rivulet with small transverse aspect ratio) of a generalised Newtonian fluid down a vertical planar substrate is considered. The parametric solution for any generalised Newtonian fluid whose viscosity can be expressed as a function of the shear rate, and the explicit solution for any generalised Newtonian fluid whose viscosity can be expressed as a function of the extra stress are obtained. These general solutions are used to describe rivulet flow of Carreau and Ellis fluids, highlighting the similarities and differences between the behaviour of these two fluids. In addition, the general behaviour of rivulets of nearly Newtonian fluids and of rivulets with small or large prescribed flux, as well as the behaviour of rivulets of strongly shear-thinning Carreau and Ellis fluids, are also described. It is found that whereas the monotonic dependence of the viscosity of a Carreau fluid on its three non-dimensional parameters and of an Ellis fluid on two of its three non-dimensional parameters leads to the expected dependence of the behaviour of the rivulet on these parameters (namely that increasing the viscosity of the fluid leads to a larger rivulet), the non-monotonic dependence of the viscosity of an Ellis fluid on the non dimensional parameter that measures the degree of shear thinning leads to a more complicated dependence of the behaviour of the rivulet on this parameter. In particular, it is also found that when the maximum extra stress in the rivulet is sufficiently large a rivulet of an Ellis fluid in the strongly shear-thinning limit in which this parameter becomes large comprises two regions with different viscosities. In the general case of non-zero viscosity in the limit of large extra stress the two regions have different constant viscosities, whereas in the special case of zero viscosity in the limit of large extra stress one region has constant viscosity and the other has a non-constant power-law viscosity, leading to a plug-like velocity profile with large magnitude in the narrow central region of the rivulet

Advection and Taylor-Aris dispersion in rivulet flow

Motivated by the need for a better understanding of the transport of solutes in microfluidic flows with free surfaces, the advection and dispersion of a passive solute in steady unidirectional flow of a thin uniform rivulet on an inclined planar substrate driven by gravity and/or a uniform longitudinal surface shear stress are analysed. Firstly, we describe the short-time advection of both an initially semi-infinite and an initially finite slug of solute of uniform concentration. Secondly, we describe the long-time Taylor-Aris dispersion of an initially finite slug of solute. In particular, we obtain the general expression for the effective diffusivity for Taylor-Aris dispersion in such a rivulet, and discuss in detail its different interpretations in the special case of a rivulet on a vertical substrate

I Want You Then Machree

Photograph of Al. H. Wilson wearing commander outfithttps://scholarsjunction.msstate.edu/cht-sheet-music/2408/thumbnail.jp

The Winding of the Yarn

Inset photo of Al H. Wilson; purple background with green bordershttps://scholarsjunction.msstate.edu/cht-sheet-music/2495/thumbnail.jp

Ireland Is Your Home Sweet Home

Photograph of Al. H. Wilson wearing commander outfithttps://scholarsjunction.msstate.edu/cht-sheet-music/2415/thumbnail.jp