Comparison between High Order Schemes Related Convection Diffusion of Navier-stokes Equations

In this paper, the cell-centered finite volume method with unstructured collocated meshes is applied to compare the accuracy of four schemes, the DC-CD, DC-SO, DCQ-QUICK and SGSD schemes are implemented for discrete convection. According to compare the numerical solutions with the analytical solutions, the impact of different formats for discrete numerical model calculation results are discussed. The results show the DCQ-QUICK scheme has the robust, accuracy and excellent convergence. Moreover, the DCQ-QUICK scheme is effective and trustable for solving complex regional problems.