Data Submittal Forms and Postprocessing Information

AIAA CFD 5th Drag Prediction Workshop

DPW5 is collecting data using a Tecplot-readable format and template data forms are provided below. Please complete as much of the form as possible, including the auxiliary data at the top of each form identifying the dataset. One form is for detailed solution metrics, one form captures configuration force/moment data, two forms capture side-of-body and trailing edge separation data, and another form is used to submit the required sectional cuts. A Tecplot macro is also provided that will automatically extract data on the surface at the required cut locations (see below for more details). The macro should work on custom generated user grids, but that has not been tested. The rest of this page provides instructions on naming conventions for files to be submitted to DPW5 and instructions on use of the forms and macros.

The following Tecplot-readable Data Submittal Forms are required for submittal to DPW5 (email results to aiaadpw@gmail.com):

• DPW-V.DataForm_SolverMetrics_v1.dat - for solver information
• DPW-V.DataForm_ForceMoment_v1.plt - for forces and moments
• DPW-V.DataForm_SOBSeparation_v1.plt - for side of body separation
• DPW-V.DataForm_TESeparation_v1.plt - for trailing edge separation
• DPW-V.DataForm_SectionalCuts_v1.plt - for sectional cut data
  • Case 1 Fixed CL = 0.5, 4 required grid levels:
    • Use file naming convention Author-GridId-Turb-NumId.SectionalCuts_L?.plt
    • where "?" is replaced by the grid level for the four required grid levels (e.g. 2, 3, 4, 5)
  • Case 2 Grid Level 3, 7 Required Angles of Attack:
    • Use file naming convention Author-GridId-Turb-NumId.SectionalCuts_A?.??.plt
    • where "?.??" is replaced by the required angles of attack = (2.50, 2.75, 3.00, 3.25, 3.50, 3.75, 4.00)

Replace "DPW-V.DataForm" in the form names with the following string "Author-GridID-Turb-NumID" where

• "Author" is the communicating author in format, e.g. "JonesG"
• "GridID" is a grid identifier. Use one of the following:
  • "CommonMB", "CommonOverset", "CommonHex", "CommonHybrid", "CommonPrism" for DPW supplied grids
  • "Custom" for user supplied grids
  • DPW-V.DataForm_GridMetrics_v1.plt - for grid information is required for user supplied grids. The reported first boundary layer cell height should be that associated with (near) the quarter chord of the wing MAC
• "Turb" is a turbulence model identifier
  • "SA", "SA-RC", "SA-la", "SST", "SST-2003", "Wilcox1998k-w", "EARSMko2005", etc.
  • Please follow the naming conventions established for each model at http://turbmodels.larc.nasa.gov/index.html
• "NumID" is an integer identifying multiple submissions from the same Author (except for turbulence model)
  • For first submission, NumId=1
  • For those changing flow solver input values/numerics (or even flow solvers) but the same Author, GridId, & Turb, increment NumId by 1 for each additional submission

The following Tecplot-readable Data Submittal Forms are optional, but encouraged, for submittal to DPW5:

• DPW-V.DataForm_SectionalCuts_v1.plt - optional section cut data for Case 1 additional grid levels (e.g. 1, 6) or participant supplied grids at Fixed CL = 0.50
  • Use file naming convention Author-GridId-Turb-NumId.SectionalCuts_L?.plt
  • where "?" is replaced by grid level
• DPW-V.DataForm_Turbulence_v1.plt - for Case 3 Turbulence Model Verification
  • Use file naming convention Author-GridId-Turb-NumId.Turbulence.plt
  • GridId = CommonStructured,CommonQuad,CommonTriangle,Custom

One set of forms covers one complete set of runs on a given sequence of grids for all required and optional Cases. (If a participant runs more than one set of grids, more than one CFD code or methodology, or more than one turbulence model, then one set of forms would be required for each grouping.) If participants analyzed additional alphas (for instance, to better define a force/moment curve), they are encouraged to include them in the data submittal. For example, if alpha = 3.60 deg was analyzed, the participant should add a line between alphas 3.50 deg and 3.75 deg.

Note that the SectionalCuts Data Form requires that data be extracted from the wing surface along specific constant y-plane cuts listed at the top of the SectionalCuts data form. Some of these cuts correspond to locations for which experimental pressure tap data are available. See the diagram at:

http://aiaa-dpw.larc.nasa.gov/Workshop4/forms/crm-wing-horiz-plan_v3.pdf

for a graphic of how/where to take the cuts (DPW5 does not make use of the CRM horizontal tail).
 
 

Tecplot Macro Files for Surface Data Extraction

For those participants with access to Tecplot, a macro file has been provided that can be used to extract data on the surface at the required cuts. Note that the SectionalCuts Data Form asks for data in the following order: X, Y, Z, CP, CF, CFX, CFY, CFZ (where CF, CFX, CFY, and CFZ should be given the value -999 if they are not being provided). Use this macro by performing the following steps for each solution which requires sectional cuts:

1. Load Wing Surface Zones into Tecplot (i.e. Remove Fuselage Zones)
   1. Be sure that X, Y, and Z are in full scale inches
   2. The macro is for the half-plane geometry defined in the +Y direction, so if your geometry lies only in the -Y sector, flip your data using Data-CreateZone-Mirror-XZPlane
   3. If CP is not one of your solution variables, then use Tecplot to create it
2. Assign LABEL variable in the macro file as the "XXX" identifier of the dataset
3. Assign FILE variable in the macro file to the filename (& path) to write out sectional cut data
4. Assign (X,Y,Z) variables in the macro file to the variable number in your dataset (typically 1,2,3)
5. Assign CP variable to the variable number in your dataset (typically 4)
6. Assign CF variable to the variable number in your dataset (if exists)
   1. If you do not set the variable number, a variable will be automatically created as CF=-999
7. Assign CFX,CFY,CFZ variables to the variable number in your dataset (if exists)
   1. If you do not set the variable numbers, variables will be automatically created as CFX,CFY,CFZ=-999
8. Run macro and verify output. The macro will:
   1. Create and rename 16 new zones of extracted data at the required cuts
   2. Output the required variables for the new 16 zones to the file name set by the macro variable, FILE
9. Copy zone data from output file into data form (DPW-V.DataForm_SectionalCuts.plt)

DPW-V.SectionalCutter_v1.1.mcr - updated to version 1.1 on 19 May 2012

(This macro was created with Tecplot 360, 2009 Release 2)

Page Curator and NASA Official Responsible for Content
Joseph H. Morrison  

Last Updated
19 May 2012

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