%0 Conference Paper
%A Kang, Kyongok
%T Flow Instabilities due to Shear-Gradients with Concentration
%M FZJ-2015-01112
%D 2014
%X Shear-induced flow instabilities is the instability of the shear-gradient concentration coupling (SCC)-instability due to coupling of shear-gradient induced mass transport and concentration [1, 2]. This leads to a self-amplifying increase of spatial gradients of the shear rate, provided that the viscosity is sufficiently strong depending on the concentration. The origin of the shear-gradient induced mass flux will be discussed, as well as the stationary flow- and concentration-profiles for the systems of yield stress (glassy) hard-spheres [3].[1] J.K.G. Dhont, K. Kang, M.P. Lettinga, W.J. Briels, “Shear banding instabilities”, KOR-AUS Rheology Journal 22, 291-308, 2010.[2] V. Schmitt, C. M. Marques, F. Lequeux, “Shear-induced phase separation of complex fluids: The role of flow-concentration coupling”, Phys. Rev. E. 52, 4009-4015, 1995.[3] H. Jin, K. Kang, K-H, Ahn, J.K.G. Dhont, „Flow instability due to coupling of shear-gradients with concentration: non-uniform flow of hard sphere glasses”, Soft Matter, Doi: 10.1039/c4sm01329h, 2014.
Y2 23 Dec 2014 - 23 Dec 2014
M2 Seoul National Univ. Seoul, South Korea
%F PUB:(DE-HGF)31
%9 Talk (non-conference)
%U https://juser.fz-juelich.de/record/187483