Question

Dstermine the canvnction coefficient distibution abait an airfoil of complex shapa that is painted black. Accounting far conduction in the matal sheathing and radiation losses to the large surroundings, datermina tha convartion heat transfer coofficionts at nodes s and 13. The urface locations at whi 1 e temperatures are measured are spaced 2 mim apart. The thickness o the metal cathing st 20 ?m, the wa urmetric generation rate is 1.6 107 w mJ he sheathing s thermal conductivity is k 25 m- and the emiss vity of the painted surface is ?-099. Assume the temperatures ror their respective na les are given as T,?29.050C. T6-29.47 ?. T7·26.99oc, T12-36.79C, T13 39.29 C. T14 41.51°C - 25 C 6 7 8 9 Insulation Air -25 C1 28 27 26 25 2423 22 Matal sheathing les =

Answer 1

As pei given Resusvemend Jhef pndal ble gse 28 98 C T236-38 339 29 C

m-1 ヒナsa →1 Cj 우+9 bela it) m Co 112-9 Cohn as c