DOI: 10.1002/2015MS000496
Scopus记录号: 2-s2.0-84944885980
论文题名: Large-eddy simulation in an anelastic framework with closed water and entropy balances
作者: Pressel K ; G ; , Kaul C ; M ; , Schneider T ; , Tan Z ; , Mishra S
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 7, 期: 3 起始页码: 1425
结束页码: 1456
语种: 英语
英文关键词: Boundary layers
; Clouds
; Entropy
; Equations of motion
; Numerical methods
; Runge Kutta methods
; Thermodynamics
; Centered schemes
; Coarser resolution
; Discretization scheme
; Numerical tests
; Prognostic variables
; Reversible process
; Strong stability preserving
; Weighted essentially nonoscillatory
; Large eddy simulation
; adiabatic process
; atmospheric modeling
; boundary layer
; cloud
; entropy
; large eddy simulation
; numerical method
; phase transition
; stability analysis
; thermodynamics
英文摘要: A large-eddy simulation (LES) framework is developed for simulating the dynamics of clouds and boundary layers with closed water and entropy balances. The framework is based on the anelastic equations in a formulation that remains accurate for deep convection. As prognostic variables, it uses total water and entropy, which are conserved in adiabatic and reversible processes, including reversible phase changes of water. This has numerical advantages for modeling clouds, in which reversible phase changes of water occur frequently. The equations of motion are discretized using higher-order weighted essentially nonoscillatory (WENO) discretization schemes with strong stability preserving time stepping. Numerical tests demonstrate that the WENO schemes yield simulations superior to centered schemes, even when the WENO schemes are used at coarser resolution. The framework is implemented in a new LES code written in Python and Cython, which makes the code transparent and easy to use for a wide user group. © 2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/76000
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Earth Sciences, ETH Zürich, Zürich, Switzerland; California Institute of Technology, Pasadena, CA, United States; Seminar for Applied Mathematics, ETH Zürich, Zürich, Switzerland
Recommended Citation:
Pressel K,G,, Kaul C,et al. Large-eddy simulation in an anelastic framework with closed water and entropy balances[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,7(3)