2nd AIAA Geometry and Mesh Generation Workshop
Sponsored by the Meshing, Visualization, and Computational Environments Technical Committee

Case 1: Exascale Meshing of the HL-CRM

Goal

Attempt to generate an Order 10.5 (aka "2018 Hero" resolution, 31 billion cell) mesh for the HL-CRM rev. 2 geometry model.

Case 1 is designed to break our tools and processes in order to learn what needs to be fixed before the year 2030 when Order 10.5 will be Medium resolution, not Hero resolution.

Participants are asked to generate the largest mesh they can up to Order 10.5 and use the Participant Questionnaire (see below) to describe where they encountered problems.

Geometry Model

Download the HL-CRM rev. 2 geometry model from the workshop ftp site.

Right click on the file link and use Save link as.

• NX
• Parasolid
• STEP
• IGES

If you must or prefer to use command line ftp, follow these instructions.

• ftp files.gmgworkshop.com
• login: anonymous
• cd outgoing/HL-CRM_rev2_Geometry
• get filename

Geometry model filenames are:

• hl-crm-gapped-flaps5.prt
• hl-crm-gapped-flaps5.x_t
• hl-crm-gapped-flaps5.stp
• hl-crm-gapped-flaps5.igs

Information about the HL-CRM Rev. 2 geometry model and some images of it are on the HL-CRM webpage of this website.

NOTE: If you encounter problems (actual or just perceived) with the geometry model please report them immediately by email to meshingworkshop@gmail.com.

Meshing Guidelines

This mesh should be based on your own best practices. However, in general you should be guided by the gridding guidelines from GMGW-1/HiLiftPW-3.

Target mesh size is Order 10.5 or higher. (See here for details of the mesh sizing nomenclature.) If you cannot generate a mesh of this size, include details on the challenges that prevented you from reaching the target size in the Participant Questionnaire. Generate the largest mesh you can.

Required Data Collection

Document the process, resources used, timings, a priori metrics, and metric values during mesh generation. Report that data and more via the Participant Questionnaire (PQ).

Download the PQ now and update it through your meshing process. Do not wait until your mesh is done to complete the PQ.

• Participant Questionnaire (PQ) (.docx)

Data Submission

Upload your mesh to the workshop FTP site.

• URL: files.gmgworkshop.com
• login: anonymous
• cd incoming

Accepted mesh file formats are CGNS, UGRID, or PLOT3D. Use this naming convention for your uploaded files.

• Mesh: MeshGeneratorName-LastName-Exascale-HLCRM-Rev2.ext
• Participant Questionnaire: PQ-LastName-HLCRM-Rev2.pdf

Send an email to meshingworkshop@gmail.com after uploading your files. Include in this email other details about the files you uploaded such as file version and data precision. For example "CGNS V2.4.1, ADF," or "UGRID, Binary, Big-Endian, Double Precision, 8 byte integer."

Due Date

October 29, 2018