Abstract
Comparison of Static Aerodynamic Data Obtained in Dynamic Wind Tunnel Tests and Numerical Simulation Research
Highlights
A wind tunnel strain gauge balance measures aerodynamic load and supports a model in a wind tunnel test section
The tests are performed in the T-38 wind tunnel facility of the Military Technical Institute in Belgrade
The wind tunnel data are compared with aerodynamic data determined using flow simulations with Reynolds Averaged Navier Stokes equations (RANS) (CFD) code and applied models of turbulence
Summary
A wind tunnel strain gauge balance measures aerodynamic load and supports a model in a wind tunnel test section. The strain gauge balance is designed in such a way that strains in its particular sections of the structure are mostly proportional to one aerodynamic component acting on the model. In almost all cases, measuring bridges on the strain gauge balances for static aerodynamic tests are formed from foil-type strain gauges. One of the main aspects of the presented research was to check the measurement accuracy of static aerodynamic data obtained using the semiconductor strain gauge balance, which is primarily intended for dynamic wind tunnel tests. The numerical results of aerodynamic data are derived from the numerical simulations, using the different resolutions of the numerical domain and the different turbulent viscosity models Those results are represented as numerical aerodynamic prediction results [13, 14]
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