Figure 4From: Unconditional stable numerical techniques for a water-quality model in a non-uniform flow stream The comparison of the exact solution and the new fourth-order scheme at \(\pmb{C(1.0,t)}\) while \(\pmb{(\Delta x=0.0500, \Delta t=0.0250, \frac{\Delta t}{(\Delta x)^{2}} =10.00)}\) and \(\pmb{(\Delta x=0.0250, \Delta t=0.0125, \frac{\Delta t}{(\Delta x)^{2}}=20.00)}\) for all \(\pmb{0\leq t\leq 12.50}\) . Back to article page