Optimal convergence rates for three-dimensional turbulent flow equations |
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Authors: | Dong-fen Bian Bo-ling Guo |
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Institution: | 11697. The Graduate School of China Academy of Engineering Physics, Beijing, 100088, P. R. China 21697. Institute of Applied Physics and Computational Mathematics, Beijing, 100088, P. R. China
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Abstract: | In this paper, the convergence rates of solutions to the three-dimensional turbulent flow equations are considered. By combining the L p -L q estimate for the linearized equations and an elaborate energy method, the convergence rates are obtained in various norms for the solution to the equilibrium state in the whole space when the initial perturbation of the equilibrium state is small in the H 3-framework. More precisely, the optimal convergence rates of the solutions and their first-order derivatives in the L 2-norm are obtained when the L p -norm of the perturbation is bounded for some $p \in 1,\tfrac{6} {5}) $ . |
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Keywords: | turbulent flow equation k-ε model optimal convergence rate energy estimate |
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