Dissertação
JOHNSONPONTESDEMOURA
–Outubro/2007
189
189
A.2 – As quatro primeirasraízes da equação transcendental,ξ
n
tg ξ
n
= Bi, paraa Condução
TérmicaemRegimeTransienteemumaParedePlana
hL
Bi =
ξ
ξξ
ξ
1
ξ
ξξ
ξ
2
ξ
ξξ
ξ
3
ξ
ξξ
ξ
4
0 0 3,1416 6,2832 9,4248
0,001 0,0316 3,1419 6,2833 9,4249
0,002 0,0447 3,1422 6,2835 9,4250
0,004 0,0632 3,1429 6,2838 9,4252
0,006 0,0774 3,1435 6,2841 9,4254
0,008 0,0893 3,1441 6,2845 9,4256
0,01 0,0998 3,1448 6,2848 9,4258
0,02 0,1410 3,1479 6,2864 9,4269
0,04 0,1987 3,1543 6,2895 9,4290
0,06 0,2425 3,1606 6,2927 9,4311
0,08 0,2791 3,1668 6,2959 9,4333
0,1 0,3111 3,1731 6,2991 9,4354
0,2 0,4328 3,2039 6,3148 9,4459
0,3 0,5218 3,2341 6,3305 9,4565
0,4 0,5932 3,2636 6,3461 9,4670
0,5 0,6533 3,2923 6,3616 9,4775
0,6 0,7051 3,3204 6,3770 9,4879
0,7 0,7506 3,3477 6,3923 9,4983
0,8 0,7910 3,3744 6,4074 9,5087
0,9 0,8274 3,4003 6,4224 9,5190
1,0 0,8603 3,4256 6,4373 9,5293
1,5 0,9882 3,5422 6,5097 9,5801
2,0 1,0769 3,6436 6,5783 9,6296
3,0 1,1925 3,8088 6,7040 9,7240
4,0 1,2646 3,9352 6,8140 9,8119
5,0 1,3138 3,0336 6,9096 9,8928