A D-N Alternating Algorithm for Solving 3D Exterior Helmholtz Problems

Table 1

Maximum node-error on Ω_𝑖 for 𝑅₁=2.0.

𝜃	Iterative times
	0	1	2	3	4	12
0.3	0.33062	0.18917	0.11558	0.07835	0.05963	0.04858
0.4	0.33062	0.14107	0.07438	0.05198	0.04806	0.04713
0.5	0.33062	0.08362	0.05926	0.04816	0.04823	0.04818
0.6	0.33062	0.06345	0.09187	0.06537	0.06823	0.09684
0.7	0.33062	0.11998	0.15164	0.06356	0.08451	0.06529