HIGHLIGHTS
- What: The focus of the study is therefore on smaller yield stresses, for which flow initiates due to the mechanically unstable configuration. Figure 4 plots Ret,H vs m for the experiments , showing a reduction in m as the flows become progressively inertial. Moving now to the specific exchange flows relevant to the experiments , the inner fluid is Newtonian and the outer fluid can be described as a Herschel-Bulkley fluid. Although the arguments of Frigaard should apply to linear perturbations of an unyielded interface, as the interface elongates in the experiments the authors develop long layers . . .
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