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Applying local discretization methods in the NASA finite-volume general circulation model

Kao-San Yeh, Shian-Jiann Lin, R.B. Rood
2002 Computing in science & engineering (Print)  
We present the basic ideas of the dynamics system of the finite-volume General Circulation Model developed at NASA Goddard Space Flight Center for climate simulations and other applications in meteorology  ...  Because the computing algorithms are based on local memory, this model has the advantage of eficiency in parallel computation with distributed memory.  ...  Acknowledgments We appreciate the comments and suggestions of the editors and several anonymous reviewers, they have been very helpful in improving the manuscript.  ... 
doi:10.1109/mcise.2002.1032429 fatcat:djpzdcbklrg6bh5sr77ljiiliq

A "Vertically Lagrangian" Finite-Volume Dynamical Core for Global Models

Shian-Jiann Lin
2004 Monthly Weather Review  
A finite-volume dynamical core with a terrain-following Lagrangian control-volume discretization is described.  ...  The vertically Lagrangian discretization reduces the dimensionality of the physical problem from three to two with the resulting dynamical system closely resembling that of the shallow water system.  ...  The author is indebted to Drs. R.  ... 
doi:10.1175/1520-0493(2004)132<2293:avlfdc>;2 fatcat:g7gc53su6ncohneuw5e5kp7tna

Parallel multigrid finite volume computation of three-dimensional thermal convection

P. Wang, R.D. Ferraro
1999 Computers and Mathematics with Applications  
The algebraic equations resulting from the finite volume discretization, including a pressure equation which consumes most of the computation time, are solved by a parallel multigrid method.  ...  A parallel implementation of the finite volume method for three-dimensional, timedependent, thermal convective flows is presented.  ...  The Cray Supercomputer used in this investigation was provided by funding from the NASA Offices of Mission to Planet Earth, Aeronautics, and Space Science.  ... 
doi:10.1016/s0898-1221(99)00113-3 fatcat:ujaavqjyebhl3ob6ukxopboxwa

Review of wetting and drying algorithms for numerical tidal flow models

Stephen C. Medeiros, Scott C. Hagen
2012 International Journal for Numerical Methods in Fluids  
The WD algorithms also tend to be highly tailored to the numerical model they serve and therefore difficult to generalize.  ...  The numerical models reviewed employ WD algorithms that fall into four general frameworks: (1) Specifying a thin film of fluid over the entire domain; (2) checking if an element or node is wet, dry or  ...  This research is funded in part by NASA Earth Sciences Division, Research Opportunities in Space and Earth Science (ROSES) Grant Number NNX09AT44G.  ... 
doi:10.1002/fld.3668 fatcat:ek4iyfcrtnftldn23oea3vawk4

On fast generation of cosmological random fields

J. Carron, M. Wolk, I. Szapudi
2014 Monthly notices of the Royal Astronomical Society  
Standard methods for generating Gaussian fields either neglect these correlations, or are costly, or both.  ...  The statistical translation invariance of cosmological random fields is broken by a finite survey boundary, correlating the observable Fourier modes.  ...  We begin with the case of a continuous field in a finite volume then show that the method remains exact on a discrete grid, when implemented as discussed at the end of the section.  ... 
doi:10.1093/mnras/stu1527 fatcat:6cpvglo67zhixo7aquwdxe5qy4

Adjoint Methods in Computational Science, Engineering, and Finance (Dagstuhl Seminar 14371)

Nicolas R. Gauger, Michael Giles, Max Gunzburger, Uwe Naumann, Marc Herbstritt
2015 Dagstuhl Reports  
It focused on fundamental theoretical issues arising in the context of "continuous vs. discrete adjoints."  ...  This report documents the program and the outcomes of Dagstuhl Seminar 14371 "Adjoint Methods in Computational Science, Engineering, and Finance".  ...  -Adjoint Methods in Computational Science, Engineering, and Finance We show in the conference that at the algorithmic level the extended DP is equivalent to standard calculus of variation applied to the  ... 
doi:10.4230/dagrep.4.9.1 dblp:journals/dagstuhl-reports/GaugerGGN14 fatcat:5aio2bo5g5bnxlymnn63ktwj7y

Application of the TranAir full-potential code to the F-16A

1987 Journal of Aircraft  
The surface panels that slice through some of the finite-element cells alter the finite-element discretization in the vicinity of boundary surfaces.  ...  an incorrect loss in wing circulation).  ... 
doi:10.2514/3.45473 fatcat:qi2gkopnazbmzathhtofs4yffe

A Scalable Implementation of a Finite-Volume Dynamical Core in the Community Atmosphere Model

Arthur A. Mirin, William B. Sawyer
2005 The international journal of high performance computing applications  
We present a distributed memory message passing parallel implementation of a finite-volume discretization of the primitive equations in the Community Atmosphere Model.  ...  space and the other in longitude/latitude space.  ...  His research topic is efficient numerical methods for general circulation models.  ... 
doi:10.1177/1094342005056096 fatcat:i3drvxh37vdlxmlact2spjfb2e

Journal of Aircraft 2014 Subject Index

2014 Journal of Aircraft  
Drag Prediction Workshop C14-111 NSU3D Results for the Fourth AIAA Drag Prediction Workshop C14-112 Drag Prediction on NASA Common Research Model Using Automatic Hexahedra Grid-Generation Method C14-113  ...  Fifth Drag Prediction Workshop: Com putational Fluid Dynamics Studies Carried Out at ONERA C14-165 Hybrid Finite-Volume Reduced-Ordet Model Method for Modelling Nonlinear Aeroelastic Unsteady Flows C14  ... 
doi:10.2514/1.c033195 fatcat:jvcvdp26efg4bjm3hfa6yuo4mm

Rotor aerodynamic loads computation using a constant vorticity contour free wake model

1995 Journal of Aircraft  
The approach taken is similar to previous imple- mentations of finite element methods for rotorcraft appli- cations”’ and applied to static deflection.*° The blade model assumes the blade displacements  ...  914 QUACKENBUSH, WACHSPRESS, AND BOSCHITSCH average Only half as many elements are required as in the straight-line lattice wake method, where the local vorticity vector is represented by two discrete  ... 
doi:10.2514/3.46818 fatcat:ehq2bflkave25npx2ti6cpmhw4

Induced Drag Computations on Wings with Accurately Modeled Wakes

Stephen C. Smith, Ilan M. Kroo
1997 Journal of Aircraft  
The wake circulation distribution is determined and an equivalent discrete-vortex wake is constructed. A down- stream space-march is then used to convect the wake to align it with the local flow.  ...  method while exploiting the well-behaved nature of the discrete-vortex wake with viscous-core model.  ... 
doi:10.2514/2.7570 fatcat:tntemhwzcvcnzfjt6fs6oerdjq

Chronological Index 1994

1994 Journal of thermophysics and heat transfer  
Patankar, University of Minnesota (8, 3, p. 419) Article based on AIAA Paper 93-2731 194-065 Finite Element Formulation of the Discrete-Or- dinates Method for Multidimensional Geometries. W. A.  ...  Robert Siegel, NASA Lewis Research Center (8, 3, p. 625) Technicai Note 794-095 Surface Radiation for Rectangular Enclosures Using the Discrete-Ordinates Method. J. R. Ehlert and T. F.  ... 
doi:10.2514/3.56301 fatcat:jqojy44swjgijhoggihmjo4ghu

Page 5985 of Mathematical Reviews Vol. , Issue 90J [page]

1990 Mathematical Reviews  
In so doing we can also apply in the present case a semi-implicit method normally used for the incompressible Navier-Stokes equations.” {For the entire collection see MR 90i:65007.}  ...  Ierley, Boundary: layers in the general ocean circulation (pp. 111-142); John Miles and Diane Henderson, Para- metrically forced surface waves (pp. 143-165); M. J. McPhaden and P.  ... 

A New Coupled Free Wake-CFD Method for Calculation of Helicopter Rotor Flow-Field in Hover

Hamid Farrokhfal, Ahmad Reza Pishevar
2014 Journal of Aerospace Technology and Management  
Euler equations are also considered in the form of absolute flow variables and solved by a multi grid Jameson's finite-volume method.  ...  The accuracy of the proposed method is illustrated by comparing numerical results to the available experimental results for the pressure distribution on a blade of a model helicopter rotor at different  ...  NUMERICAL METHOD In order to apply the finite-volume method, Eq. (12) is written in its integral form as: The computational domain is meshed by a multiblock structured hexahedral grid.  ... 
doi:10.5028/jatm.v6i2.366 fatcat:oxeqedebdfettibnophsihxznq

Transonic flow computations using nonlinear potential methods

Terry L. Holst
2000 Progress in Aerospace Sciences  
The main emphasis is on finite-difference and finite-volume schemes. Finite-element schemes will be discussed in Section 3.11. 3.3.].  ...  A finite volume method for calculating trans- onic potential rio,a, around wings from the pressure min- imum integral. NASA TM-75324, 1978. [105] Chen LT, Caughey DA.  ... 
doi:10.1016/s0376-0421(99)00010-x fatcat:acs76espffdcvedhy6rjkkiroa
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