对于非线性对流占优扩散方程,利用特征线法和有限体积法,构造了特征有限体积算法,并进行了误差分析.理论分析和数值算例表明,在收敛阶保持不变的情况下,此算法既消除了数值震荡现象,又达到了简化计算的目的.
A scheme of characteristic finite volume method for solving nonlinear convection-dominated equations is constructed. The new scheme can reduce the numerical oscillations of the convection-dominated equations and simplify calculation. Convergence analysis and error estimates are also established. The numerical example result shows that the algorithm is effective.