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A Crank–Nicolson finite spectral element method for the 2D non-stationary Stokes equations about vorticity–stream functions.


ABSTRACT: In this article, we first develop a semi-discretized Crank–Nicolson format about time for the two-dimensional non-stationary Stokes equations about vorticity–stream functions and analyze the existence, uniqueness, stability, and convergence of the semi-discretized Crank–Nicolson solutions. Then we establish a fully discretized Crank–Nicolson finite spectral element format based on the quadrilateral elements for the two-dimensional non-stationary Stokes equations about vorticity–stream functions and analyze the existence, uniqueness, stability, and convergence of the Crank–Nicolson finite spectral element solutions. In the end, we use three numerical examples to confirm the validity of our theoretical conclusions.

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC6244727 | biostudies-other | 2018

REPOSITORIES: biostudies-other

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