Improving numerical accuracy for the viscous-plastic formulation of sea ice
Improving numerical accuracy for the viscous-plastic formulation of sea ice
复制标题
提高海冰粘塑性公式的数值精度
DOI:
10.1016/j.jcp.2023.112184
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发表时间:
2023
影响因子:
4.1
通讯作者:
Lee, Yoonsang
中科院分区:
文献类型:
--
作者:
Li, Tongtong;Gelb, Anne;Lee, Yoonsang
Accurate modeling of sea ice dynamics is critical for predicting environmental variables and is important in applications such as navigating ice breaker ships, and as such there have been numerous investigations on modeling sea ice dynamics. The 1979 viscous-plastic (VP) sea ice model introduced by W.D. Hibler remains the most widely accepted. Due to its highly nonlinear features, the Hibler model is intrinsically challenging for computational solvers. This study therefore focuses on improving the numerical accuracy of the VP sea ice model. Since the poor convergence observed in existing numerical simulations stems from the nonlinear nature of the VP formulation, this investigation proposes using the celebrated weighted essentially non-oscillatory (WENO) scheme – as opposed to the frequently employed centered difference (CD) scheme – for the spatial derivatives in the VP sea ice model. We then proceed to numerically demonstrate that WENO yields higher-order convergence for smooth solutions, and that furthermore it is able to resolve the discontinuities in the sharp features of sea ice covers – something that is not possible using CD methods. Finally, our proposed framework introduces a potential function method that utilizes the phase field method that naturally incorporates the physical restrictions of ice thickness and ice concentration in transport equations, resulting in modified transport equations which include additional forcing terms. Our method does not require post-processing, thereby avoiding the possible introduction of discontinuities and corresponding negative impact on the solution behavior. Numerical experiments are provided to demonstrate the efficacy of our new methodology.
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影响因子:
3.2
作者:
James Williams;L. Bruno Tremblay
通讯作者:
L. Bruno Tremblay
影响因子:
4.1
作者:
J. Lemieux;D. Knoll;Bruno Tremblay;D. Holland;M. Losch
通讯作者:
M. Losch
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
J. Lemieux;B. Tremblay;Stephen J. Thomas;J. Sedlacek;L. Mysak
通讯作者:
L. Mysak
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
J. Lemieux;B. Tremblay
通讯作者:
B. Tremblay
影响因子:
2.9
作者:
B. Ip;W. Hibler;G. Flato
通讯作者:
G. Flato