SEMI-LAGRANGIAN

作品数：41被引量：107H指数：7
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相关机构：湘潭大学南京水利科学研究院大连理工大学厦门大学更多>>
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Impact of a Three-Dimensional Reference State in a Global Semi-Implicit Semi-Lagrangian Non-Hydrostatic Atmospheric Model on Yin–Yang Grids
《Journal of Meteorological Research》2024年第5期901-922,共22页Yifan ZHAO Xindong PENG Dehui CHEN Yerong FENG Xiaohan LI Juan GU 
Supported by the National Natural Science Foundation of China(42375153,42075151,and 42205157).
The definition of a reference state close to the realistic atmosphere in an atmospheric model is essential for deriving prognostic deviations and improving numerical accuracy.In this study,a new dynamical framework al...
关键词：semi-implicit semi-Lagrange three-dimensional reference state global non-hydrostatic atmospheric model linearized equation medium-range weather prediction 
A Partial RKDG Method for Solving the 2D Ideal MHD Equations Written in Semi-Lagrangian Formulation on Moving Meshes with Exactly Divergence-Free Magnetic Field
《Advances in Applied Mathematics and Mechanics》2023年第4期932-963,共32页Shijun Zou Xijun Yu Zihuan Dai Fang Qing Xiaolong Zhao 
supported by National Natural Science Foundation of China(Nos.12071046,11671049,91330107,11571002 and 11702028);China Postdoctoral Science Foundation(No.2020TQ0013).
A partial Runge-Kutta Discontinuous Galerkin(RKDG)method which preserves the exactly divergence-free property of the magnetic field is proposed in this paper to solve the two-dimensional ideal compressible magnetohydr...
关键词：Ideal compressible MHD equations semi-Lagrangian formulation exactly divergence-free magnetic field Runge-Kutta discontinuous Galerkin method 
A High-Order Conservative Semi-Lagrangian Solver for 3D Free Surface Flows with Sediment Transport on Voronoi Meshes
《Communications on Applied Mathematics and Computation》2023年第2期596-637,共42页Matteo Bergami Walter Boscheri Giacomo Dimarco 
support of MIUR-PRIN Project 2017,No.2017KKJP4X“Innovative numerical methods for evolutionary partial differential equations and applications”.
In this paper,we present a conservative semi-Lagrangian scheme designed for the numeri-cal solution of 3D hydrostatic free surface flows involving sediment transport on unstruc-tured Voronoi meshes.A high-order recons...
关键词：Conservative semi-Lagrangian Free surface flows Sediment transport High-order reconstruction Hydrostatic model 
High-Order Semi-Lagrangian WENO Schemes Based on Non-polynomial Space for the Vlasov Equation
《Communications on Applied Mathematics and Computation》2023年第1期116-142,共27页Andrew Christlieb Matthew Link Hyoseon Yang Ruimeng Chang 
AFOSR and NSF for their support of this work under grants FA9550-19-1-0281 and FA9550-17-1-0394 and NSF grant DMS 191218。
In this paper,we present a semi-Lagrangian(SL)method based on a non-polynomial function space for solving the Vlasov equation.We fnd that a non-polynomial function based scheme is suitable to the specifcs of the targe...
关键词：Semi-Lagrangian methods WENO schemes High-order splitting methods Non-polynomial basis Vlasov equation Vlasov-Poisson system 
A High-Order Semi-Lagrangian Finite Difference Method for Nonlinear Vlasov and BGK Models
《Communications on Applied Mathematics and Computation》2023年第1期170-198,共29页Linjin Li Jingmei Qiu Giovanni Russo 
Research of Linjin Li and Jingmei Qiu is supported by the NSF grant NSF-DMS-1818924;the Air Force Office of Scientific Computing FA9550-18-1-0257 and the University of Delaware;the Italian Ministry of Instruction,University and Research(MIUR)to support this research with funds coming from the PRIN Project 2017,No.2017KKJP4X and ITN-ETN Horizon 2020 Project,Project Reference 642768.
In this paper,we propose a new conservative high-order semi-Lagrangian finite difference(SLFD)method to solve linear advection equation and the nonlinear Vlasov and BGK models.The finite difference scheme has better c...
关键词：SEMI-LAGRANGIAN WENO Finite difference Vlasov-Poisson BGK equation Linear stability 
Comparison of Semi-Lagrangian Discontinuous Galerkin Schemes for Linear and Nonlinear Transport Simulations被引量：1
《Communications on Applied Mathematics and Computation》2022年第1期3-33,共31页Xiaofeng Cai Wei Guo Jing-Mei Qiu 
W.Guo:Research is supported by NSF grant NSF-DMS-1830838;J.-M.Qiu:Research is supported by NSF grant NSF-DMS-1522777 and NSF-DMS-1818924;Air Force Office of Scientific Computing FA9550-18-1-0257.
Transport problems arise across diverse fields of science and engineering.Semi-Lagran-gian(SL)discontinuous Galerkin(DG)methods are a class of high-order deterministic transport solvers that enjoy advantages of both t...
关键词：Semi-Lagrangian(SL) Discontinuous Galerkin(DG) Transport simulations SPLITTING Non-splitting COMPARISON 
Development of 1km-Scale Operational Model in South China被引量：4
《Journal of Tropical Meteorology》2021年第4期319-329,共11页CHEN Zi-tong DAI Guang-feng WU Kai-xin ZHONG Shui-xin XU Dao-sheng 
National Key R&D Program of China(2018YFC1506901);National Natural Science Foundation of China(U18114641010846)。
To support short-range weather forecasts,a high-resolution model(1km)is developed and technically upgraded in the South China Regional Center,including the improvement of the 3D reference scheme and the predictor-corr...
关键词：numerical weather prediction reference atmosphere semi-implicit semi-Lagrangian rapidly updating cycle short-range forecast 
A Positivity-preserving Conservative Semi-Lagrangian Multi-moment Global Transport Model on the Cubed Sphere
《Advances in Atmospheric Sciences》2021年第9期1460-1473,共14页Jie TANG Chungang CHEN Xueshun SHEN Feng XIAO Xingliang LI 
supported by the National Key Research and Development Program of China (Grant Nos.2017YFC1501901 and 2017YFA0603901);the Beijing Natural Science Foundation (Grant No.JQ18001)。
A positivity-preserving conservative semi-Lagrangian transport model by multi-moment finite volume method has been developed on the cubed-sphere grid.Two kinds of moments(i.e.,point values(PV moment) at cell interface...
关键词：global transport model cubed-sphere grid multi-moment method single-cell-based scheme conservative semi-Lagrangian method 
A New Semi-Lagrangian Finite Volume Advection Scheme Combines the Best of Both Worlds
《Advances in Atmospheric Sciences》2021年第9期1608-1609,共2页Lucas HARRIS 
Advection,or transport by wind,is fundamental to numerical weather and climate modeling.It is especially important to solve the equations governing the distribution of heat,moisture,pollutants,and so on.Two classes of...
关键词：PRESCRIBED BACKWARD Finite 
Adaptive OrderWENO Reconstructions for the Semi-Lagrangian Finite Difference Scheme for Advection Problem
《Communications in Computational Physics》2021年第6期67-96,共30页Jiajie Chen Xiaofeng Cai Jianxian Qiu Jing-Mei Qiu 
We present a new conservative semi-Lagrangian finite difference weighted essentially non-oscillatory scheme with adaptive order.This is an extension of the conservative semi-Lagrangian(SL)finite difference WENO scheme...
关键词：SEMI-LAGRANGIAN weighted essentially nonoscillatory WENO adaptive order reconstruction finite difference mass conservation Vlasov-Poisson incompressible Euler 
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