1. (15) whereF, aand bdeterminethe spatialpropertiesofthe algorithm. Several schemes up to sixth-order may be derived from this general approach. For example, the fourth-order three-point scheme C4 is obtained with r=I5a=|,6 - 0while the sixth-order C6scheme is obtained with r=|,a = ,fr=| andthe standard explicit second-order scheme E2 requires F -0, a -1 and 6 = 0. Details of the spectral characteristics of these schemes, and others obtainable from Eqn. 15, may be found in Refs. 29,30.
2. 0-31 = cr
3. 13-11-21 19 17 15 13 11 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0
4. B=1, RH=5,I.=5