Introductory Fluid Mechanics Katz Essential Study Questions And Answer

INTRODUCTORY FLUID MECHANICS KATZ
ESSENTIAL STUDY QUESTIONS AND ANSWERS

◉ What is laminar flow?
Answer: A type of flow where the velocity at any fixed point in the
fluid is constant, resulting in smooth flow in parallel layers.


◉ What is turbulent flow?
Answer: A type of flow where the velocity at any fixed point in the
fluid can vary, resulting in disrupted layers of flow.


◉ What is viscosity?
Answer: A measure of a fluid's resistance to flow.


◉ What is a Newtonian fluid?
Answer: A fluid whose viscosity remains constant regardless of the
shear applied.


◉ Give examples of Newtonian fluids.
Answer: Water, mineral oil, gasoline, and alcohol.


◉ What is a non-Newtonian fluid?

, Answer: A fluid whose viscosity changes when shear is applied.


◉ What is a dilatant fluid?
Answer: A non-Newtonian fluid whose viscosity increases when
shear is applied (e.g., quicksand).


◉ What is a pseudoplastic fluid?
Answer: A non-Newtonian fluid whose viscosity decreases when
shear is applied (e.g., ketchup).


◉ What is a rheopectic fluid?
Answer: A non-Newtonian fluid whose viscosity increases with time
under shear (e.g., gypsum paste).


◉ What is a thixotropic fluid?
Answer: A non-Newtonian fluid whose viscosity decreases over time
under shear (e.g., paint).


◉ Define mass density (ρ).
Answer: The mass of a fluid per unit volume.


◉ What is specific volume (V)?
Answer: The volume occupied by a unit mass of fluid.