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An integrated CFD/experimental analysis of aerodynamic forces and momentsAerodynamic analysis using computational fluid dynamics (CFD) is most fruitful when it is combined with a thorough program of wind tunnel testing. The understanding of aerodynamic phenomena is enhanced by the synergistic use of both analysis methods. A technique is described for an integrated approach to determining the forces and moments acting on a wind tunnel model by using a combination of experimentally measured pressures and CFD predictions. The CFD code used was FLO57 (an Euler solver) and the wind tunnel model was a heavily instrumented delta wing with 62.5 deg of leading-edge sweep. A thorough comparison of the CFD results and the experimental data is presented for surface pressure distributions and longitudinal forces and moments. The experimental pressures were also integrated over the surface of the model and the resulting forces and moments are compared to the CFD and wind tunnel results. The accurate determination of various drag increments via the combined use of the CFD and experimental pressures is presented in detail.
Document ID
19900000690
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Melton, John E. (NASA Ames Research Center Moffett Field, CA, United States)
Robertson, David D. (NASA Ames Research Center Moffett Field, CA, United States)
Moyer, Seth A. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1989
Subject Category
Aerodynamics
Report/Patent Number
A-89145
NAS 1.15:102195
NASA-TM-102195
Accession Number
90N10006
Funding Number(s)
PROJECT: RTOP 505-61-91
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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