The rheological behavior of fluids can be classified based on the relationship between shear stress and the rate of shear strain. Ideal fluids have zero viscosity. Newtonian fluids have a linear relationship passing through the origin. Non-Newtonian fluids deviate from this linear relationship, including shear-thickening (dilatant) fluids where viscosity increases with shear rate ($n>1$), shear- thinning (pseudoplastic) fluids where viscosity decreases ($n
For general relationship between the shear stress $\tau$ and the rate of shear strain $ \frac{du}{dy}$ for a fluid can be written as $\tau = A+B\left(\frac{du}{dy}\right)^n$ where A, B and n are constant. Which of the following is a false statement? - For Bingham plastics : $n=1$ and $A \neq 0$ - Question not attempted
Asked in Assistant Eng. (Mechanical) Competitive Examination, 2023 · Topic: Mechanics (Fluid Statics and Dynamics (Continuity Equation, Bernoulli's Theorem))
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