Numerical solution of the unsteady diffusion-convection-reaction equation based on improved spectral Galerkin method

作者：Zhong, Jiaqi^*; Zeng, Cheng; Yuan, Yupeng; Zhang, Yuzhe; Zhang, Ye

来源：AIP Advances, 2018, 8(4): 045314.

DOI：10.1063/1.5023332

• SYSTEMS

The aim of this paper is to present an explicit numerical algorithm based on improved spectral Galerkin method for solving the unsteady diffusion-convection-reaction equation. The principal characteristics of this approach give the explicit eigenvalues and eigenvectors based on the time-space separation method and boundary condition analysis. With the help of Fourier series and Galerkin truncation, we can obtain the finite-dimensional ordinary differential equations which facilitate the system analysis and controller design. By comparing with the finite element method, the numerical solutions are demonstrated via two examples. It is shown that the proposed method is effective.

• 出版日期2018-4
• 单位重庆邮电大学