Figure 6From: Unconditional stable numerical techniques for a water-quality model in a non-uniform flow stream The approximated pollutant concentration using the new fourth-order scheme and employing the Saulyev scheme, for all \(\pmb{0\leq t \leq 133}\) min, \(\pmb{\Delta x = 0.05}\) , \(\pmb{\Delta t = 0.00125}\) , \(\pmb{\Delta t/\Delta x=0.50}\) . Back to article page