Engineering Board Exam Reviewer · Fluid Mechanics · medium

A fluid that requires a yield stress before it begins to flow (e.g., toothpaste) is called a:

1. Newtonian fluid
2. Pseudoplastic fluid
3. Ideal fluid
4. Bingham plastic

Answer

D. Bingham plastic

Solution

After yield, a Bingham plastic flows with a linear stress–strain-rate relation.

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