Actions for OMEGA [electronic resource] : The operational multiscale environment model with grid adaptivity

Email RIS file
Bookmark
Report an Issue

OMEGA [electronic resource] : The operational multiscale environment model with grid adaptivity

Published
Livermore, Calif : Lawrence Livermore National Laboratory, 1995.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
pages 63, Paper 1 : digital, PDF file
Additional Creators
Lawrence Livermore National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
This review talk describes the OMEGA code, used for weather simulation and the modeling of aerosol transport through the atmosphere. Omega employs a 3D mesh of wedge shaped elements (triangles when viewed from above) that adapt with time. Because wedges are laid out in layers of triangular elements, the scheme can utilize structured storage and differencing techniques along the elevation coordinate, and is thus a hybrid of structured and unstructured methods. The utility of adaptive gridding in this moded, near geographic features such as coastlines, where material properties change discontinuously, is illustrated. Temporal adaptivity was used additionally to track moving internal fronts, such as clouds of aerosol contaminants. The author also discusses limitations specific to this problem, including manipulation of huge data bases and fixed turn-around times. In practice, the latter requires a carefully tuned optimization between accuracy and computation speed.
Report Numbers
E 1.99:conf-941279--
conf-941279--
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
07/01/1995.
"conf-941279--"
"DE96002417"
": Contract DNA001-92-C-0076"
Workshop on adaptive grid methods, Pleasanton, CA (United States), 8-9 Dec 1994.
Bacon, D.P.
View MARC record | catkey: 14141859