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Analysis of least-squares mixed finite element methods for nonlinear nonstationary convection-diffusion problems

Author(s): Dan-Ping Yang.
Journal: Math. Comp. 69 (2000), 929-963.
MSC (1991): Primary 65N30, 35F15
Posted: August 24, 1999
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Abstract: Some least-squares mixed finite element methods for convection-diffusion problems, steady or nonstationary, are formulated, and convergence of these schemes is analyzed. The main results are that a new optimal a priori $L^2$ error estimate of a least-squares mixed finite element method for a steady convection-diffusion problem is developed and that four fully-discrete least-squares mixed finite element schemes for an initial-boundary value problem of a nonlinear nonstationary convection-diffusion equation are formulated. Also, some systematic theories on convergence of these schemes are established.

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Additional Information:

Dan-Ping Yang
Affiliation: Department of Mathematics, University of Shandong, Jinan, Shandong, 250100, P. R. China
Email: dpyang@math.sdu.edu.cn

DOI: 10.1090/S0025-5718-99-01172-2
PII: S 0025-5718(99)01172-2
Keywords: Least-squares algorithm, mixed finite element, nonlinear convection-diffusion problem, convergence analysis
Received by editor(s): January 2, 1998
Received by editor(s) in revised form: August 14, 1998
Posted: August 24, 1999
Additional Notes: The research was supported by the China State Major Key Project for Basic Researches and by the Doctoral Point Foundation and the Trans-Century Training Programme Foundation for Talents by the China State Education Commission.
Copyright of article: Copyright 2000, American Mathematical Society

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