The meeting was called to order at 2:00. There were 12 attendees, listed below. The minutes of the last meeting were approved as posted on the Web.
It was announced that CGNS will have a meeting at the AIAA Aerospace Sciences Meeting in Reno. The meeting will be on Monday night, January 6 at 7:00pm. The room will be posted at the meeting. Potential items for the agenda were suggested, including:
We also welcome Bruce Wedan, who will be taking over from Diane Poirier as the new ICEM representative on the Committee. Diane has been the principal author of the CGNS software for many years, and we thank her for contributions and enthusiasm. Bruce has also been active, being the principal author of ADF Viewer, and we look forward to his participation.
Chris Rumsey has agreed to put his name forward as Chairperson,
replacing Bob Bush.
We will vote on this change in leadership at the January meeting in
There was discussion of if/how documentation for the utilities
should be posted on the Web site.
Charlie indicated that the documentation provided by Bruce Wedan
with the ADFViewer is quite extensive, and can easily be posted.
Currently the CGNS web-site points directly to individual CGNS
documents (hosted at NASA).
However, Charlie indicated that there is also a summary document at
Bruce will add a link to the CGNS Documentation Home Page at NASA
Glenn and Charlie will maintain the utility documentation from the
Bruce also indicated that documentation for the additional
utilities added under the Langley contract will be completed soon,
and can also be posted by Charlie.
Chris Rumsey updated the attendees on the recently completed Langley contract. His notes are included below.
There was some discussion on if and how we could maintain utilities
developed by various organizations.
It was suggested to provide an upload site for source and
makefiles, and a mechanism to access code from a common utility.
Charlie Towne will look into if NASA can provide a site with upload
capability, and Bruce Wedan will check if the current ICEM host can
David Edwards could not attend the telecon, but indicated via e-mail that he is still interested in and planning to benchmark a comparison between HDF and ADF implementations of CGNS files.
The meeting was adjourned at about 3:00.
|Bob Bush||Pratt & Whitney|
|Chris Rumsey||NASA Langley|
|Charlie Towne||NASA Glenn|
|Armen Darian||Boeing - Rocketdyne|
To: CGNS users From: Chris Rumsey Re: latest news from CGNS Although many of you are already aware of these, I thought it would be worthwhile to summarize several important tasks that were recently accomplished for CGNS. In summary: 1. A new mid-level library (API) function was written allow deletion of any node in CGNS database (V2.2) - this expands the usability of the API 2. Several new additions have been made to the CGNS standard, and corresponding API calls have been written to handle them (V2.2): a. axisymmetry specification b. rotating coordinates specification c. gravity specification d. wall function specification e. periodic BC specification f. rotor-stator interface BC specification - these expand the range of applications that can make use of CGNS 3. A CGNS Tools Utility has been written. It can be used alone or in conjunction with the "adfviewer" utility. The new tools include: a. translate between CGNS and PLOT3D formats b. translate between CGNS, TECPLOT, and PATRAN unstructured formats c. translate between cell-centered & cell-vertex CGNS files d. translate between dimensional & nondimensional CGNS files e. translate between primitive & conserved CGNS files f. interpolate solutions from one CGNS grid to another g. extract subsets of data from structured CGNS solutions (e.g., every other gridpoint) - this new utility greatly enhances the ability to use, translate, share, and work with CGNS files As always, all software is freely available from the CGNS website: www.cgns.org Chris