On the numerical performance of turbulent closure schemes in a 1D lake model

[摘要] The turbulence closure is a crucial part of a lake model. The closures commonly used are different in underlying physics and mathematical properties, leading to contrasting numerical stability and computational efficiency. We tested the performance of the one-dimensional model LAKE using the k -closure and Henderson-Sellers turbulence parameterizations, with a convective mixing scheme, in idealized Kato-Phillips experiment and Lake Kuivajärvi (Finland) simulations. Our results demonstrate that k- closure allows for a physically realistic solution at timesteps Δt

[发布机构] Institute of Monitoring of Climatic and Ecological Systems, Siberian Branch of the Russian Academy of Sciences, 10/3, Academichesky ave., Tomsk, Russia^1;Research Computing Center, Moscow State University, Leninskiye Gory str., 1, bld.4, Moscow, Russia^2;Faculty of Geography, Moscow State University, Leninskiye Gory str., 1, bld.1, Moscow, Russia^3

[效力级别] 计算机科学

[关键词] Convective mixing;Lake model;Mathematical properties;Numerical performance;Numerical scheme;One-dimensional model;Turbulence closures;Turbulent closure schemes