(See the appendix for details). The system of Equation (35) can be used 

 also to represent Equations (40) and (41) together with t E 0, if the 

 coefficient matrices B, C, and D are modified to the following: 







I (42a) 



dG 



^11 dH 



(42b) 



and 



'c. +e.. . -«-^2 9u 



2 f ' 11 Id) U 8£ 



C(W) = (42c) 



F(H) - e,, G(i|?-- K 



11 U 3£ 



The crossflow angle is asymmetric with respect to 6 = 0, so t is also 

 asymmetric with respect to this line. Accordingly, the central difference 

 approximation for dt/di^ on the 8=0 line is 



il , il. il 



^ - (-^ ) = -L_ (43) 



2h„Ae h„A8 ^ ■' 



23 



