SATPC0037661 Tab 06 RDSS..pdf

Page 1 V2.0 3-15-2017

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

NASA SHARED SERVICES CENTER

RECOMMENDATION AND DETERMINATION TO SOLICIT FROM ONE SOURCE

OR BRAND NAME

PICK ONE

Sole Source:

☒I recommend that NASA, NASA Shared Services Center negotiate with Dassault Systems only for PowerFLOW Licenses & Annual Support Renewal. The total estimated cost of this effort is and the estimated period of performance or lead-time for delivery is 4/6/2025 - 4/5/2026.

OR

Brand Name Justification:

☐I recommend that NASA, NASA Shared Services Center negotiate only with vendors who can provide the subject band name from Manufacture Name for Enter Supply or Service to be procured. The total estimated cost of this effort is Enter Dollar amount and the estimated period of performance or lead-time for delivery is Date.

This recommendation is for the acquisition of supplies or services determined to be reasonably available from only one source/only one manufacture. Competition is impractical for the following reasons (please answer the questions below):

1. What are the reasons for soliciting only the suggested source/suggested brand name? Please provide the unique characteristics of the items or services along with the supporting rationale and the market research performed to substantiate your reason for the suggested source/brand name.

The PowerFLOW software is used to simulate unsteady flows over complicated geometries without the requirement for extensive and costly grid generation. This software suite includes the capability to rapidly generate embedded Cartesian grids with varying resolution. Proprietary technology for near-wall treatment allows the use of wall functions instead of resolving the flow all the way to the wall, reducing the grid requirement. Furthermore, the unique algorithm is very efficient on modern CPUs and parallelizes efficiently to many cores. The PowerFLOW suite also includes complete flow analysis and noise prediction codes that are required to fully analyze a configuration. Researchers in the Research Directorate (RD) have been running PowerFLOW simulation studies to investigate the aeroacoustic performance of the high-lift configuration of the Common Research Model (CRM). PowerFLOW has algorithmic advantages that allow meshes to be quickly generated around complicated geometries and can perform unsteady simulations with acoustic predictions in a relatively efficient manner. These advantages result in a better turnaround of simulations than our other tools, which will allow more configurations to be evaluated before the wind tunnel test. Achieving the desired aeroacoustic performance of the CRM in the 14x22 test will meet high-level Advanced Air Transportation Technology Project’s High Aspect Ration Wing and Quiet High-Lift Element milestones, and the PowerFLOW software suite is an essential tool for success.

2. What is the impact to the government if another vendor/brand is used? Include any dollar, schedule, or compatibility impacts if possible.

Dassault Systemes is the only contractor who can provide software updates, bug fixes, new versions and product assistance for PowerFLOW. No other product is compatible with PowerFLOW datasets, and Dassault Systems is the only entity authorized to sell the software in the United States. The introduction of a new brand software to meet this functional requirement would have repercussions on project timelines, budgets, and staff. To pursue the evaluation or procurement of an alternate software would be both operationally cost and time prohibitive.