Appendix
For conciseness, some coefficients in Eqs. (22) and functions in Eqs (27) are listed here.
$$ \begin{array}{l}{C}_1=\frac{W_{\mathrm{H}}}{3{\left(\lambda a\right)}^2}\left\{-6\left[10{\left(\lambda a\right)}^2{\varphi}^2-3\left(3{\lambda}^2{a}^2+10\right){\varphi}^{5/3}-{\left(\lambda a\right)}^2\right]{I}_{\alpha }(a)+{\left(\lambda a\right)}^2\right.\left\{\left[{B}_2\right.\right.\hfill \\ {}\left.\kern7.5em +60\alpha \left(\lambda a\right)\right]{\varphi}^2-3\left[{\left(\lambda a\right)}^3 \cosh \left(\lambda a\right)-5{\left(\lambda a\right)}^2 \sinh \left(\lambda a\right)+20\lambda a \cosh \left(\lambda a\right)\right]{\varphi}^{5/3}\hfill \\ {}\left.\kern7.5em +3{\left(\lambda a\right)}^2\alpha \left(\lambda a\right){\varphi}^{1/3}-2{\left(\lambda a\right)}^3 \cosh \left(\lambda a\right)\right\}{I}_3(a)-3{\left(\lambda a\right)}^4\left\{2\alpha \left(\lambda a\right){\varphi}^2\right.\hfill \\ {}\left.\kern7.5em -\left[\lambda a \cosh \left(\lambda a\right)+ \sinh \left(\lambda a\right)\right]{\varphi}^{5/3}\right\}\left[{J}_5(a)-{\varphi}^{-5/3}{J}_0(a)\right]+3{\left(\lambda a\right)}^2\left[{B}_9{\varphi}^2\right.\hfill \\ {}\left.\left.\kern7.5em +{\left(\lambda a\right)}^2\alpha \left(\lambda a\right){\varphi}^{1/3}\right]\left[{J}_3(a)-{\varphi}^{-1/3}{J}_2(a)+3{\varphi}^{-1/3}U\right]\right\}+\frac{2}{3{\left(\lambda a\right)}^2}{I}_0(a),\hfill \end{array} $$
(A1a)
$$ \begin{array}{l}{C}_2=\frac{W_{\mathrm{H}}}{{\left(\lambda a\right)}^5}\left\{2{\left(\lambda a\right)}^7\left(1-{\varphi}^{5/3}\right)\left[3U-{J}_2(a)\right]-2{\left(\lambda a\right)}^3\left[10{\left(\lambda a\right)}^2{\varphi}^2-3\left(3{\lambda}^2{a}^2+10\right){\varphi}^{5/3}\right.\right.\hfill \\ {}\left.\kern7em -{\left(\lambda a\right)}^2\right]{I}_3(a)+2{\left(\lambda a\right)}^5\left[{\left(\lambda a\right)}^2{\varphi}^2-\left({\lambda}^2{a}^2+3\right){\varphi}^{5/3}\right]\left[{J}_5(a)-{\varphi}^{-5/3}{J}_0(a)\right]\hfill \\ {}\kern6.6em +2{\left(\lambda a\right)}^7\left({\varphi}^{1/3}-{\varphi}^2\right){J}_3(a)-2\left[{B}_6{\left(\lambda a\right)}^2{\varphi}^2-{B}_8{\varphi}^{5/3}+3{\left(\lambda a\right)}^4\beta (x){\varphi}^{1/3}\right.\hfill \\ {}\left.\left.\kern7em -{\left(\lambda a\right)}^2{B}_5\right]{I}_{\alpha }(a)\right\}+\frac{2}{{\left(\lambda a\right)}^5}{I}_{\beta }(a),\hfill \end{array} $$
(A1b)
$$ \begin{array}{c}\hfill {C}_3=\frac{W_{\mathrm{H}}}{15}\left\{5{\left(\lambda a\right)}^2{B}_3{\varphi}^{1/3}\left[3{\varphi}^{-1/3}U+{J}_3(a)-{\varphi}^{-1/3}{J}_2(a)\right]-{\left(\lambda a\right)}^2\left[3{\left(\lambda a\right)}^2\alpha \left(\lambda a\right){\varphi}^{1/3}\right.\right.\hfill \\ {}\hfill \left.\kern5.5em -{B}_1\right]{J}_5(a)-30\left[{\left(\lambda a\right)}^2{\varphi}^{1/3}-\left(3+{\lambda}^2{a}^2\right)\right]{I}_{\alpha }(a)+15{\left(\lambda a\right)}^2\left\{2\alpha \left(\lambda a\right){\varphi}^{1/3}\right.\hfill \\ {}\hfill \left.\left.\kern2.2em -\left[\lambda a \cosh \left(\lambda a\right)+ \sinh \left(\lambda a\right)\right]\right\}{I}_3(a)-\left[{\left(\lambda a\right)}^2{B}_2{\varphi}^{1/3}-{B}_4\right]{J}_0(a)\right\},\hfill \end{array} $$
(A1c)
$$ \begin{array}{l}{C}_4=\frac{W_{\mathrm{H}}}{3}\left\{-\left[{B}_4{\varphi}^{5/3}+{\left(\lambda a\right)}^2{B}_1\right]{J}_3(a)-{\left(\lambda a\right)}^2\left[{B}_2{\varphi}^{5/3}+3{\left(\lambda a\right)}^2\alpha \left(\lambda a\right)\right]\left[3U-{J}_2(a)\right]\right.\hfill \\ {}\kern4.5em +{\left(\lambda a\right)}^2{B}_3{\varphi}^{5/3}\left[{J}_5(a)-{\varphi}^{-5/3}{J}_0(a)\right]-6{\left(\lambda a\right)}^2\left(1-{\varphi}^{5/3}\right){I}_{\alpha }(a)\hfill \\ {}\left.\kern5em -3\left[{B}_9{\varphi}^{5/3}+{\left(\lambda a\right)}^2\alpha \left(\lambda a\right)\right]{I}_3(a)\right\},\hfill \end{array} $$
$$ {C}_5=-{\varphi}^{1/3}\left\{{C}_4+{W}_{\mathrm{H}}{\left(\lambda a\right)}^2\left[{B}_2{\varphi}^{5/3}+3{\left(\lambda a\right)}^2\alpha \left(\lambda a\right)\right]U\right\}+{W}_{\mathrm{H}}\left[{B}_4{\varphi}^{5/3}+{\left(\lambda a\right)}^2{B}_1\right]U, $$
(A1e)
$$ {C}_6=-{\varphi}^{5/3}{C}_3 $$
(A1f)
for the Happel model, and
$$ \begin{array}{l}{C}_1=\frac{W_{\mathrm{K}}}{3{\left(\lambda a\right)}^2}\left\{-3{\left(\lambda a\right)}^2\alpha \left(\lambda a\right)\left[2{\varphi}^2+\varphi \right]\left[{J}_5(a)+5{\varphi}^{-1}{J}_2(a)-15{\varphi}^{-1}U\right]-30\left(2{\varphi}^2\right.\right.\hfill \\ {}\left.\kern5em -\varphi -1\right){I}_{\alpha }(a)+\left\{\left[{B}_2+60\alpha \left(\lambda a\right)\right]{\varphi}^2-10{\left(\lambda a\right)}^2\left[\lambda a \cosh \left(\lambda a\right)-3 \sinh \left(\lambda a\right)\right]\varphi \right.\hfill \\ {}\left.\kern5em +18{\left(\lambda a\right)}^2\alpha \left(\lambda a\right){\varphi}^{1/3}-10{\left(\lambda a\right)}^3 \cosh \left(\lambda a\right)\right\}{I}_3(a)+3\left\{{B}_9{\varphi}^2+5{\left(\lambda a\right)}^2\left[\lambda a \cosh \left(\lambda a\right)\right.\right.\hfill \\ {}\left.\left.\kern5em + \sinh \left(\lambda a\right)\right]\varphi +6{\left(\lambda a\right)}^2\alpha \left(\lambda a\right){\varphi}^{1/3}\right\}{J}_3(a)-3\left\{{B}_9\varphi -12{\left(\lambda a\right)}^2\alpha \left(\lambda a\right){\varphi}^{1/3}\right.\hfill \\ {}\left.\kern5em +5{\left(\lambda a\right)}^2\left[\lambda a \cosh \left(\lambda a\right)+ \sinh \left(\lambda a\right)\right]\right\}\left.{J}_0(a)\right\}+\frac{2}{3{\left(\lambda a\right)}^2}{I}_0(a),\hfill \end{array} $$
(A2a)
$$ \begin{array}{l}{C}_2=\frac{W_{\mathrm{K}}}{{\left(\lambda a\right)}^5}\left\{-2{\left(\lambda a\right)}^5\left(\varphi -{\varphi}^2\right)\left[{J}_5(a)+5{\varphi}^{-1}{J}_2(a)-15{\varphi}^{-1}U\right]-10{\left(\lambda a\right)}^3\left(2{\varphi}^2-\varphi \right.\right.\hfill \\ {}\left.\kern4.5em -1\right){I}_3(a)+2{\left(\lambda a\right)}^3\left[{\left(\lambda a\right)}^2\varphi -6{\left(\lambda a\right)}^2{\varphi}^{1/3}+\left(5{\lambda}^2{a}^2+15\right)\right]{J}_0(a)-2{\left(\lambda a\right)}^3\left[{\left(\lambda a\right)}^2{\varphi}^2\right.\hfill \\ {}\left.\kern4em +5\left({\lambda}^2{a}^2+3\right)\varphi -6{\left(\lambda a\right)}^2{\varphi}^{1/3}\right]{J}_3(a)-2\left[{B}_6{\varphi}^2-10{B}_7\varphi +18{\left(\lambda a\right)}^2\beta \left(\lambda a\right){\varphi}^{1/3}\right.\hfill \\ {}\left.\left.\kern4.5em -5{B}_5\right]{I}_{\alpha }(a)\right\}+\frac{2}{{\left(\lambda a\right)}^5}{I}_{\beta }(a),\hfill \end{array} $$
(A2b)
$$ \begin{array}{l}{C}_3=\frac{W_{\mathrm{K}}}{15{\left(\lambda a\right)}^2}\left\{5{\left(\lambda a\right)}^2\left(5{B}_3-{B}_2\varphi \right)\left[3U-{J}_2(a)\right]-5\left[{B}_4\varphi -6{B}_3{\left(\lambda a\right)}^2{\varphi}^{1/3}\right]{J}_3(a)\right.\hfill \\ {}\kern5em +{\left(\lambda a\right)}^2\left[5{B}_3\varphi -18{\left(\lambda a\right)}^2\alpha \left(\lambda a\right){\varphi}^{1/3}+5{B}_1\right]{J}_5(a)+30\left[{\left(\lambda a\right)}^2\varphi -6{\left(\lambda a\right)}^2{\varphi}^{1/3}\right.\hfill \\ {}\left.\kern5em +5\left({\lambda}^2{a}^2+3\right)\right]{I}_{\alpha }(a)-15\left\{{B}_9\varphi -12{\left(\lambda a\right)}^2\alpha \left(\lambda a\right){\varphi}^{1/3}+5{\left(\lambda a\right)}^2\left[\lambda a \cosh \left(\lambda a\right)\right.\right.\hfill \\ {}\left.\left.\left.\kern5em + \sinh \left(\lambda a\right)\right]\right\}{I}_3(a)-\left[6{\left(\lambda a\right)}^2{B}_2{\varphi}^{1/3}-5{B}_4\right]{J}_0(a)\right\},\hfill \end{array} $$
(A2c)
$$ \begin{array}{l}{C}_4=\frac{W_{\mathrm{K}}}{3}\left\{-15\alpha \left(\lambda a\right)\left(2\varphi +1\right){I}_3(a)+3{\left(\lambda a\right)}^2\alpha \left(\lambda a\right)\varphi \left[{J}_5(a)+5{\varphi}^{-1}{J}_2(a)-15{\varphi}^{-1}U\right]\right.\hfill \\ {}\left.\kern4em -5\left({B}_3\varphi +{B}_1\right){J}_3(a)-30\left(1-\varphi \right){I}_{\alpha }(a)+\left({B}_2\varphi -5{B}_3\right){J}_0(a)\right\},\hfill \end{array} $$
(A2d)
$$ \begin{array}{l}{C}_5=\frac{W_{\mathrm{K}}}{3{\left(\lambda a\right)}^2}\left\{{\left(\lambda a\right)}^2\left({B}_3{\varphi}^2+{B}_1\varphi \right)\left[15{\varphi}^{-1}U-{J}_5(a)\right]-{\left(\lambda a\right)}^2\left[{B}_2{\varphi}^2-5{B}_3\varphi \right.\right.\hfill \\ {}\left.\kern6.3em +18{\left(\lambda a\right)}^2\alpha \left(\lambda a\right){\varphi}^{1/3}\right]{J}_2(a)+\left[{B}_4{\varphi}^2+6{\left(\lambda a\right)}^2{B}_1{\varphi}^{1/3}\right]{J}_3(a)\hfill \\ {}\kern6.5em -6\left[{\left(\lambda a\right)}^2{\varphi}^2+5\left({\lambda}^2{a}^2+3\right)\varphi -6{\left(\lambda a\right)}^2{\varphi}^{1/3}\right]{I}_{\alpha }(a)+3\left\{{B}_9{\varphi}^2\right.\hfill \\ {}\left.\kern6.2em +5{\left(\lambda a\right)}^2\left[\lambda a \cosh \left(\lambda a\right)+ \sinh \left(\lambda a\right)\right]\varphi +6{\left(\lambda a\right)}^2\alpha \left(\lambda a\right){\varphi}^{1/3}\right\}{I}_3(a)\hfill \\ {}\left.\kern6.5em -\left[{B}_4\varphi -6{\left(\lambda a\right)}^2{B}_3{\varphi}^{1/3}\right]{J}_0(a)\right\},\hfill \end{array} $$
(A2e)
$$ {C}_6=\frac{\varphi }{5}{C}_4 $$
(A2f)
for the Kuwabara model, where
$$ {W}_H={\left[{\left(\lambda a\right)}^2{B}_2{\varphi}^2-{B}_4{\varphi}^{5/3}+3{\left(\lambda a\right)}^4\gamma \left(\lambda a\right){\varphi}^{1/3}-{\left(\lambda a\right)}^2{B}_1\right]}^{-1}, $$
(A3a)
$$ {W}_K={\left[{B}_2{\varphi}^2-10{B}_3\varphi +18{\left(\lambda a\right)}^2\gamma \left(\lambda a\right){\varphi}^{1/3}-5{B}_1\right]}^{-1}; $$
(A3b)
$$ {B}_1=3\alpha \left(\lambda a\right)+2{\left(\lambda a\right)}^3 \cosh \left(\lambda a\right), $$
(A4a)
$$ {B}_2=2\left\{15\alpha \left(\lambda a\right)+{\left(\lambda a\right)}^2\left[\lambda a \cosh \left(\lambda a\right)-6 \sinh \left(\lambda a\right)\right]\right\}, $$
(A4b)
$$ {B}_3=6\alpha \left(\lambda a\right)+{\left(\lambda a\right)}^2\left[\lambda a \cosh \left(\lambda a\right)-3 \sinh \left(\lambda a\right)\right], $$
(A4c)
$$ \begin{array}{l}{B}_4=3\left\{30\alpha \left(\lambda a\right)+2{\left(\lambda a\right)}^2\left[7\lambda a \cosh \left(\lambda a\right)-12 \sinh \left(\lambda a\right)\right]\right.\hfill \\ {}\kern2.1em \left.+{\left(\lambda a\right)}^4\left[\lambda a \cosh \left(\lambda a\right)-5 \sinh \left(\lambda a\right)\right]\right\},\hfill \end{array} $$
(A4d)
$$ {B}_5=3\beta \left(\lambda a\right)+2{\left(\lambda a\right)}^3 \sinh \left(\lambda a\right), $$
(A4e)
$$ {B}_6=2\left\{15\beta \left(\lambda a\right)+{\left(\lambda a\right)}^2\left[\lambda a \sinh \left(\lambda a\right)-6 \cosh \left(\lambda a\right)\right]\right\}, $$
(A4f)
$$ {B}_7=6\beta \left(\lambda a\right)+{\left(\lambda a\right)}^2\left[\lambda a \sinh \left(\lambda a\right)-3 \cosh \left(\lambda a\right)\right], $$
(A4g)
$$ \begin{array}{c}\hfill {B}_8=3\left\{30\beta \left(\lambda a\right)+2{\left(\lambda a\right)}^2\left[7\lambda a \sinh \left(\lambda a\right)-12 \cosh \left(\lambda a\right)\right]\right.\hfill \\ {}\hfill \left.\kern10.8em +{\left(\lambda a\right)}^4\left[\lambda a \sinh \left(\lambda a\right)-5 \cosh \left(\lambda a\right)\right]\right\},\hfill \end{array} $$
(A4h)
$$ {B}_9=2\left\{15\alpha \left(\lambda a\right)+{\left(\lambda a\right)}^2\left[2\lambda a \cosh \left(\lambda a\right)-7 \sinh \left(\lambda a\right)\right]\right\}. $$
(A4i)