Where to find "Convective Heat and Mass Transfer" (Kays, 4th ed.) — and safe, legal alternatives

Problem: Air at 25°C flows over a flat plate at 5 m/s; plate length 1 m. Estimate local Nusselt at x = 0.5 m for laminar boundary layer (Pr ≈ 0.71).

• Flow over flat plates, cylinders, spheres: local and average Nusselt correlations.
• Effects of pressure gradients, separation, and roughness.
• Empirical correlations (e.g., Churchill–Bernstein, Colburn analogy) and when to use them.

• Lumped-capacitance method (Biot number criterion).
• Transient conduction–convection solutions using separation of variables and series solutions.
• Use in cooling/heating processes, start-up, and shutdown scenarios.