Reduced-order finite element method based on POD for fractional Tricomi-type equation
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The reduced-order finite element method (FEM) based on a proper orthogonal decomposition (POD) theory is applied to the time fractional Tricomi-type equation. The present method is an improvement on the general FEM. It can significantly save memory space and effectively relieve the computing load due to its reconstruction of POD basis functions. Furthermore, the reduced-order finite element (FE) scheme is shown to be unconditionally stable, and error estimation is derived in detail. Two numerical examples are presented to show the feasibility and effectiveness of the method for time fractional differential equations (FDEs).
Key wordsreduced-order finite element method (FEM) proper orthogonal decomposition (POD) fractional Tricomi-type equation unconditionally stable error estimate
Chinese Library ClassificationO242
2010 Mathematics Subject Classification39K99 65M60 65M12
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