Published in 47th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, January 5, 2009, pages 1-24.
Copyright © 2009 David D. Marshall. The original paper was published by American Institute of Aeronautics and Astronautics, Inc.. The definitive version is available at http://www.aiaa.org/agenda.cfm?lumeetingid=1811.
This paper demonstrates the use of CFD thus far as a design tool in evaluating aerodynamic performance for a NASA Research Announcement (NRA) project. The NRA project is carried out in two phases over the course of three years. Phase I utilizes CFD to evaluate and down select between two proposed future generations CESTOL airliner concepts; the Hybrid Wing-Body and the Blended Wing-Body. Both configurations are simulated at takeoff and cruise conditions to provide the means to making a final decision on which concept to continue forward with in Phase II. This second phase will take the proposed airliner concept and develop a wind tunnel model that will be used to generate validation data for CFD codes. The CFD analysis carried out in Phase I concluded that the preliminary Hybrid Wing-Body concept provides better CESTOL performance over the Blended Wing-Body concept. Through the use of CFD, this design will be further refined and analyzed to yield a possible future airliner configuration. The focus of this paper will explain the methodologies and techniques used in the meshing and numerical simulation process that generated the data needed to make a final decision for Phase I.