Figure 12From: Accurate and efficient numerical solutions for elliptic obstacle problems The relaxation parameter ω (horizontal axis) vs. the number of iterations (vertical axis) for solving the linear obstacle problem with \(\pmb{\varphi =\varphi _{3}}\) by the obstacle SOR. (a) when \(h=1/64\) and (b) when \(h=1/128\).Back to article page