Modified Finite Difference Schemes on Uniform Grids for Simulations of the Helmholtz Equation at Any Wave Number

Table 7

Comparison of the dispersion error at an angle of for standard and modified finite difference schemes for fixed with varying wave numbers for the case of (45) and (46) boundary conditions.

	Dirichlet BCs (45)			Dirichlet and radiation BCs (46)
	Standard	Modified		Standard	Modified