A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Filters
Applying local discretization methods in the NASA finite-volume general circulation model
2002
Computing in science & engineering (Print)
Preserved Fulltext
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
2004
Monthly Weather Review
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2004; you can also visit the original URL.
The file type is application/pdf.
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>2.0.co;2
fatcat:g7gc53su6ncohneuw5e5kp7tna
Parallel multigrid finite volume computation of three-dimensional thermal convection
1999
Computers and Mathematics with Applications
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
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
2012
International Journal for Numerical Methods in Fluids
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2013; you can also visit the original URL.
The file type is application/pdf.
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
2014
Monthly notices of the Royal Astronomical Society
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Note that this fulltext copy is not of the "primary" version of this work. The version it corresponds to is:
2014 pre-print arXiv:1406.6072v1 fatcat:ioir6devanaj3hjowf6l2itm2iOther Versions
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)
2015
Dagstuhl Reports
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
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
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
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
2005
The international journal of high performance computing applications
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
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
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
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
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
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
1997
Journal of Aircraft
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
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
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
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
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
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
2014
Journal of Aerospace Technology and Management
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
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
2000
Progress in Aerospace Sciences
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
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
« Previous
Showing results 1 — 15 out of 2,218 results