64) For the geometry presented below, two walls are insulated (choppy lines) and the other one is exposed to convection. The geometry has been divided into nodes with a deltax = 1 mm and delta y = 4 mm Determine the temperature of the fluid (Tinf). Hint: Do the energy balance on node 16. Additional information: h = 1200 W/(m^2-K), k = 40 W/(m-K), T12 = 503 K, T13 = 503 K, T14 = 503 K, T16 = 514 K, T17 = 503 K, T19 = 514 K. Ax Ay 10 14 Tinf of