A NOVEL CHEBYSHEV-COLLOCATION SPECTRAL METHOD FOR SOLVING THE TRANSPORT EQUATION

被引:0
作者
Li, Zhonghui [1 ]
Chen, Xiangyong [2 ,3 ,4 ,5 ]
Qiu, Jianlong [2 ,3 ]
Xia, Tongshui [1 ]
机构
[1] Shandong Normal Univ, Business Sch, Jinan 250014, Peoples R China
[2] Sch Automat & Elect Engn, Linyi 276005, Shandong, Peoples R China
[3] Key Lab Complex Syst & Intellignet Comp, Linyi 276005, Shandong, Peoples R China
[4] China Univ Geosci, Hubei Key Lab Adv Control & Intelligent Automat C, Wuhan 430074, Peoples R China
[5] China Univ Geosci, Engn Res Ctr Intelligent Geodetect Technol, Minist Educ, Wuhan 430074, Peoples R China
基金
中国国家自然科学基金;
关键词
Transport equation; spectral collocation method; weighted orthogonality; Chebyshev polynomial; WAVE-PROPAGATION; ELEMENT METHODS; IMPLEMENTATION; POLYNOMIALS; SCATTERING; GALERKIN;
D O I
10.3934/jimo.2020080
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
transport equations with given boundary and initial conditions. By the weightedorthogonal Chebyshev polynomials, we design the corresponding basis functions for spatial variables, which guarantee the stiff matrix is sparse, for the spectral collocation methods. Combining with direct algebraic algorithms for the sparse discretized formula, we solve the equivalent scheme to get the numerical solutions with high accuracy. This collocation methods can be used to solve other kinds of models with limited computational costs, especially for the nonlinear partial differential equations. Some numerical results are listed to illustrate the high accuracy of this numerical method. ABSTRACT In this paper, we employ an efficient numerical method to solve transport equations with given boundary and initial conditions. By the weighted orthogonal Chebyshev polynomials, we design the corresponding basis functions for spatial variables, which guarantee the stiff matrix is sparse, for the spectral collocation methods. Combining with direct algebraic algorithms for the sparse discretized formula, we solve the equivalent scheme to get the numerical solutions with high accuracy. This collocation methods can be used to solve other kinds of models with limited computational costs, especially for the nonlinear partial differential equations. Some numerical results are listed to illustrate the high accuracy of this numerical method.
引用
收藏
页码:2519 / 2526
页数:8
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