1. to turbulent houndary layers.' The sutvey of differential methods by Rlottner cwers the state-of-the-art i n 1975.* The methods which haie wolved since then are mostly ,variants of the basic techniques discussed i n these rwiews.
2. which results from a corresponding finitedifference discretization of the equation set with an additional ad-iantage. When the finite- 1 Ki ,i-z)lEj-1 - 5i-ZT difference discretization i s properly formulated, the matrix can retain the coupling between