Table 2.

For steady-state flow over a bump with R/H = 1/2, we compare FS and WS calculations of the x-force, torque and maximum shear stress under grid refinement with BEM predictions (all in non-dimensional variables). Also shown is the volume flux in comparison to the BEM prediction. In the FS calculations the stress tensor is evaluated at X – nh.

Grid points	$x\text{-force}\left(\mathcal{F}\right)$		$\text{Torque}\left(\mathcal{T}\right)$		$\text{Volume flux}\left(\mathcal{Q}\right)$	Max Shear stress (τmax)
	FS	WS	FS	WS		FS	WS
BEM	5.563		1.338		0.584	2.964
512 × 128	5.617	6.546	1.045	1.419	0.554	2.639	3.013
256 × 64	5.722	6.653	0.993	1.519	0.523	2.376	3.192
128 × 32	5.817	6.877	0.801	1.723	0.458	1.951	3.819