Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
National Exams — December 2019 — 12-MTL-A2 Transport Phenomena in Materials Engineering. Three-hour, open-book exam (one textbook of the candidate's choice permitted, with margin notations, no loose notes); any non-communicating calculator permitted. Each of the five questions is worth 25 points, and any four constitute a complete paper — only the first four questions as they appear in the answer book are marked. All five are solved below for completeness. Candidates were told to state all assumptions clearly.
Reference texts: Bird, R. B., Stewart, W. E. & Lightfoot, E. N., Transport Phenomena — power-law non-Newtonian flow between parallel plates and annular fully-developed duct flow (Questions 1, 3), matching this paper's own Appendix A conservation-equation tables; Incropera, F. P. et al., Fundamentals of Heat and Mass Transfer — natural-convection correlations for a horizontal and a vertical flat plate (Question 2); Geiger, G. H. & Poirier, D. R., Transport Phenomena in Materials Processing — mould-resistance-controlled solidification of castings (Question 4); Shewmon, P. G., Diffusion in Solids — the Boltzmann–Matano graphical method for a concentration-dependent interdiffusion coefficient (Question 5).
