Numerical simulations of the flow with the prescribed displacement of the airfoil and comparison with experiment
1 Technical University of Liberec, NTI FM, Studentská 2, 461 17 Liberec 1, Czech Republic
2 Academy of Sciences of the Czech Republic, Institute of Thermomechanics, Dolejškova 5, 182 00 Prague 8, Czech Republic
The work is devoted to comparing measured data with the results of numerical simulations. As mathematical model was used mathematical model whitout turbulence for incompressible flow In the experiment was observed the behavior of designed NACA0015 airfoil in airflow. For the numerical solution was used OpenFOAM computational package, this is open-source software based on finite volume method. In the numerical solution is prescribed displacement of the airfoil, which corresponds to the experiment. The velocity at a point close to the airfoil surface is compared with the experimental data obtained from interferographic measurements of the velocity field. Numerical solution is computed on a 3D mesh composed of about 1 million ortogonal hexahedron elements. The time step is limited by the Courant number. Parallel computations are run on supercomputers of the CIV at Technical University in Prague (HAL and FOX) and on a computer cluster of the Faculty of Mechatronics of Liberec (HYDRA). Run time is fixed at five periods, the results from the fifth periods and average value for all periods are then be compared with experiment.
© Owned by the authors, published by EDP Sciences, 2013
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