spectral element method
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2022 ◽  
Author(s):  
Steven Brill ◽  
Pinaki Pal ◽  
Muhsin Ameen ◽  
Chao Xu ◽  
Matthias Ihme

2022 ◽  
Vol 2148 (1) ◽  
pp. 012014
Author(s):  
Mengyu Zhang ◽  
Hua Wu

Abstract A triangular spectral element method is established for the two-dimensional viscous Burgers equation. In the spatial direction, a new type of mapping is applied. We splice the local basis functions on each triangle into a global basis function. The second-order Crank-Nicolson/ leap-frog (CNLF) method is used for discretization in the time direction. Due to the use of a quasi-interpolation operator, the nonlinear term can be handled conveniently. We give the fully discrete scheme of the method and the implementation process of the algorithm. Numerical examples verify the effectiveness of this method.


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