Thermal Science 2014 Volume 18, Issue 4, Pages: 1223-1233
https://doi.org/10.2298/TSCI130409104V
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Validation of the CFD code used for determination of aerodynamic characteristics of nonstandard AGARD-B calibration model
Vidanović Nenad D. (Faculty of Transport and Traffic Engineering, Belgrade)
Rašuo Boško P. (Faculty of Mechanical Engineering, Belgrade)
Damljanović Dijana B. (Military Technical Institute, Belgrade)
Vuković Đorđe S. (Military Technical Institute, Belgrade)
Ćurčić Dušan S. (Military Technical Institute, Belgrade)
The application of Computational Fluid Dynamics (CFD) is often motivated by
the limitations of measurement techniques, economic limitations, and complex
model geometry or, as it is in this case, the unavailability of appropriate
test model geometry. CFD was used to assess and evaluate scenario that cannot
be investigated experimentally and was shown to be an efficient and
economical option to experimental setup. Because of that, there is a strong
need for a validation procedure and assessment of the data obtained by
numerical simulation. A combined experimental/numerical procedure is
described for determination and estimation of subsonic and supersonic
aerodynamic behavior of an AGARD-B model with a nonstandard nose
configuration. Conducted numerical aerodynamic calculations needed to be
satisfied via experimental tests so, the CFD code validation procedure
required experimental data that characterize the distributions of measured
aerodynamic forces and moments which act upon the test model. Validation of
the CFD was achieved by performing the calculation for the model with the
standard nose shape as well, and by comparing the results of the CFD
calculations with available experimental data for the model with the standard
nose configuration. Comparison demonstrated very good agreement between
numerically and experimentally obtained results. It was concluded that the
numerical prediction for the similar nonstandard model configuration could be
accepted as reliable and used to estimate the corrections needed when
interpreting the available data. The effects of the different nose shape were
found to be small and noticeable mainly in the pitching moment coefficient.
This work also demonstrates the application of CFD for the purpose of proving
a qualitative and quantitative prediction of the aerodynamics behavior.
Keywords: experimental aerodynamics, wind tunnel validation, calibration model, CFD modeling, code calibration, aerodynamic coefficients