FLUID DYNAMICS ACTUAL EXAM SCRIPT 2026 QUESTIONS WITH SOLUTIONS GRADED A+

FLUID DYNAMICS ACTUAL EXAM SCRIPT
2026 QUESTIONS WITH SOLUTIONS
GRADED A+


◉Define specific volume and its units. Answer: - Specific volume, v =
V/m
- Has units of m3/kg (reciprocal of density)
- Measure of the amount of volume a unit of mass takes up


◉Define specific weight and its units. Answer: - Specific weight, γ =
ρg
- Has units of N/m3
- Measure of a material's weight per unit volume (weight version of
density)


◉Define specific gravity and its units. Answer: - Specific gravity, SG =
ρ / ρ_water
- Unitless (dimensionless ratio)
- Ratio of a material's density to the density of water


◉Ideal Gas Equation. Answer: PV = nRT or P=ρRT

, - P = pressure
- V = volume
- n = number of moles
- ρ = density
- R = ideal gas constant
- T = temperature


◉No-slip condition. Answer: A fluid's velocity at contact with a
surface is equal to the surface's velocity


◉Define a Newtonian Fluid and how it relates to viscosity, both in
words and in equation form.. Answer: - A fluid is Newtonian if its
ratio of shear stress to shear strain rate is constant.


- In equation form, τ / (dθ/dt) = constant. This constant is known
dynamic viscosity, μ. As such, a Newtonian fluid has constant
dynamic viscosity.


◉Describe the shear stress vs. shear strain rate graph and how it
relates to difference viscosities and the S-S curve.. Answer:
Analogous to the S-S curve where materials of different slopes have
different stiffnesses, materials of different slopes on the shear stress
vs. shear strain rate graph mean having different dynamic
viscosities.