Bingham plastic


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Bingham plastic

[′biŋ·əm ‚plas·tik]
(fluid mechanics)
A non-Newtonian fluid exhibiting a yield stress which must be exceeded before flow starts; thereafter the rate of shear versus shear stress curve is linear.
References in periodicals archive ?
For the commonly used Bingham plastic model, the Hedstrom technique overestimates turbulent flow friction losses because it does not take account of viscous-layer thickening.
For laminar flow in circular pipes, the analysis of the flow of a Bingham plastic is a classical case that has been known for decades; but turbulent flow, and the transition between the two types, has been more resistant to analysis.
As noted above, the simple two-parameter model called the Bingham plastic is often employed to quantify this behaviour.
For a Bingham plastic, it is convenient to use a reduced stress variable [theta], defined as [tau]/[tau]B (for pipe flow [theta] = [[tau].
For a Bingham plastic this ratio is given in terms of [theta] by:
1], where analytical solutions were provided for the Bingham plastic model in simple flow fields.
The constitutive equation which relates the stress to the deformation for the Bingham plastic fluid is as follows:
With reference to Figure 1, both the Bingham plastic fluid and the Herschel-Bulkley fluid, with a yield stress of [[Tau].
4] have studied numerically the motion of a sphere through a Bingham plastic fluid within an infinite medium, whereas the present results and that of Atapattu et al.
Brown, Creeping Motion of a Sphere through a Bingham Plastic, J.