Fig. 3. On the left: comparison between...

Fig. 3.

$On the left: comparison between the numerically calculated value of $K^*$ and its $K$ approximation, calculated from (3.16), and the second $\widetilde{K}$ approximation, calculated from (3.18), for varying $\alpha $ from $6^{\circ }(=\pi /30)$ to $20^{\circ }(=\pi /9)$. On the right: ratio of $K^*$ to $K$ and $\widetilde{K}$ for varying $\alpha $ from $1^{\circ }(=\pi /180)$ to $14^{\circ }(=7\pi /90)$. Here $X^{\prime}=1$ and $Y^{\prime}=0.1$.$

On the left: comparison between the numerically calculated value of |$K^*$| and its |$K$| approximation, calculated from (3.16), and the second |$\widetilde{K}$| approximation, calculated from (3.18), for varying |$\alpha $| from |$6^{\circ }(=\pi /30)$| to |$20^{\circ }(=\pi /9)$|⁠. On the right: ratio of |$K^*$| to |$K$| and |$\widetilde{K}$| for varying |$\alpha $| from |$1^{\circ }(=\pi /180)$| to |$14^{\circ }(=7\pi /90)$|⁠. Here |$X^{\prime}=1$| and |$Y^{\prime}=0.1$|⁠.

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