Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
National Exams — December 2013 — Met-A2, Metallurgical Rate Phenomena. Three-hour, closed-book exam using an approved (Casio or Sharp) calculator, one double-sided aid sheet permitted; candidates were told to state any interpretive assumptions. Candidates answer Question 1 plus any four of Questions 2–9 — all nine are solved below for completeness. All questions are of equal value (20 marks each, five questions = 100%).
Reference texts: Geankoplis, C. J., Transport Processes and Separation Process Principles — mass/heat/momentum transfer fundamentals (Fick's/Newton's/Fourier's laws, boundary-layer correlations); Szekely, J. & Themelis, N. J., Rate Phenomena in Process Metallurgy — gas-halo diffusion, ladle/tundish fluid flow, wire injection; Turkdogan, E. T., Fundamentals of Steelmaking — BOF/EAF heat and mass balances; Callister, W. D., Materials Science and Engineering — TTT/CCT diagrams and phase transformations; Incropera, F. P. & DeWitt, D. P., Fundamentals of Heat and Mass Transfer — liquid-metal (low-Pr) convection correlations.
