Bubble-Enriched Least-Squares Finite Element Method for Transient Advective Transport

Table 3

Advection of concentration spike by $t=1.3$.

	CN-LSFEM		ST-LSFEM		BE-LSFEM		Improvements		Range of PCG iterations^*
Courant no.	$U_{\min \hspace{0.17em}}$	$U_{\max \hspace{0.17em}}$	$U_{\min \hspace{0.17em}}$	$U_{\max \hspace{0.17em}}$	$U_{\min \hspace{0.17em}}$	$U_{\max \hspace{0.17em}}$	%redn. in $U_{\min \hspace{0.17em}}$	%gain in $U_{\max \hspace{0.17em}}$
0.73	$-$0.0695	0.6119	$-$0.0865	0.5692	$-$0.0531	0.6941	23.6	13.4	6-7
1.0	$-$0.0843	0.5663	$-$0.1079	0.5143	$-$0.0486	0.6780	42.3	19.73	5-6
1.47	$-$0.1391	0.5164	$-$0.1250	0.4462	$-$0.1084	0.5704	22.1	10.4	6-7