Plug flow of a yield-stress fluid
= Plug flow of a yield-stress fluid
Where the stress in a yield-stress fluid remains below the yield stress, the shear rate vanishes and the material moves as an undeformed plug bounded by yielded layers.
= Plug flow of a yield-stress fluid
Where the stress in a yield-stress fluid remains below the yield stress, the shear rate vanishes and the material moves as an undeformed plug bounded by yielded layers.