Numerical Integration of the Boundary-Layer Equations
Numerical solutions of the boundary-layer equations are based on the assumption that the differential expressions in the partial differential equations can be approximated by difference expressions. This approximation, called discretisation can be obtained from a series expansion for the velocity components in the coordinate directions. These series expansions do not necessarily have to consist of Taylor series. Since only a certain number of terms in any expansion can be taken, there is a discretisation or truncation error, and this is dependent on the number and size of the terms neglected.
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