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Axisymmetric gravity currents of power-law fluids over a rigid horizontal surface
Journal of Fluid Mechanics
We analyse axisymmetric gravity currents of power-law fluids theoretically and experimentally. We use aqueous suspensions of Xanthan gum in laboratory experiments of constant-volume and constant-flux release to resolve the rheological parameters of the fluid, which we then compare with measurements made using a strain-controlled rheometer. We find that the constant-volume release of highly shearthinning fluids involves an early-time evolution dominated by inertia, and non-convex free surfacesdoi:10.1017/jfm.2012.545 fatcat:a4nmd5rrzjcullywqn746zx47u