Multiple computational simulations performed for comparison with planar doppler velocimetry measurements

Charles Tyler, Henry Baust, Greg Elliott, Jim Crafton

Research output: Contribution to conferencePaperpeer-review


To characterize and improve upon aircraft designs in an expedient and efficient manner, it is imperative to generate approaches for rapidly assessing new aircraft designs. Recent technological advancements have enabled faster and more accurate assessment in three specific areas: Computational Fluid Dynamic (CFD) modeling, rapid prototyping, and experimental global measurements. The Air Force Research Laboratory Air Vehicles Directorate (AFRL/VA) initiated a joint computational/experimental ground testing program to investigate and analyze the flow field of the UCAV X-45A. The test program used rapid prototyping manufacturing technologies to fabricate a model for ground testing; implemented innovative, non-intrusive measurement techniques; and compared CFD results with experimental data acquired from ground tests. The measurement techniques included standard force and moment measurements, as well as global optical diagnostics such as Intensity- and Lifetime-based Pressure Sensitive Paint (PSP), Projection Moiré Interferometry (PMI), and Planar Doppler Velocimetry (PDV). This paper will focus on the various computations performed and the comparison of the results with the Planar Doppler Velocimetry measurements. All the experiments conducted for the PDV test were at Mach number 0.2 and 20 degrees angle of attack measured at "tunnel off" conditions. Computations were performed using both Euler and Navier-Stokes simulations. To achieve better correlation between the wind tunnel data and the CFD results, the computational grids included the wind tunnel structure and appropriate mounting hardware.

Original languageEnglish (US)
Number of pages13
StatePublished - 2005
Event43rd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 10 2005Jan 13 2005


Conference43rd AIAA Aerospace Sciences Meeting and Exhibit
Country/TerritoryUnited States
CityReno, NV

ASJC Scopus subject areas

  • General Engineering


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