Da

Da = 1

Da = 0.1

Da = 0.01

Da = 0.001

$\begin{array}{l}\eta =1/3\\ \xi =2/3\end{array}$

$\bar{u}$

0.079395

0.0794*

0.05692682

0.02071123

0.0207*

0.007936325

$\begin{array}{l}\eta =1/4\\ \xi =3/4\end{array}$

$\bar{u}$

0.07938781

0.05659447

0.01881449

0.00553387

$\begin{array}{l}\eta =0.49\\ \xi =0.51\end{array}$

$\bar{u}$

0.07940428

0.0794*

0.05735128

0.02355505

0.0236*

0.01315206