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The chapter focuses on fluid dynamics, particularly the relationship between shear stress and shear strain rate in fluids. It contrasts the behavior of Newtonian and non-Newtonian fluids, emphasizing the effect of temperature and pressure on the coefficient of viscosity. Additionally, it explores the concept of surface tension and its implications for fluid behavior in contact with solids and gases.
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References
ch 2 part b.pdfClass Notes
Memorization
What we have learnt
Final Test
Revision Tests
Term: Shear Stress
Definition: The stress component parallel to a given plane in a material, caused by applied force and resulting in deformation.
Term: Viscosity
Definition: A measure of a fluid's resistance to deformation and flow; it describes how the shear stress relates to the shear strain rate.
Term: Newtonian Fluids
Definition: Fluids for which the viscosity remains constant regardless of the shear rate applied.
Term: NonNewtonian Fluids
Definition: Fluids whose viscosity changes with the shear rate; examples include shear-thinning and shear-thickening fluids.
Term: Surface Tension
Definition: The tension at the surface of a liquid caused by cohesive forces among liquid molecules, leading to a minimizing surface area.