DETERMINATION OF THE THREE-DIMENSIONAL VELOCITY VECTOR USING THE LASER DOPPLER MEASUREMENTS OF UNEVENLY SAMPLED COMPONENTS
A. V. Klimov, S. V. Dvoinishnikov, V. G. Meledin, D. V. Kulikov, S. V. Krotov, I. V. Shchepikhin
Kutateladze Institute Thermophysics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent'eva, 1, 630090 Novosibirsk
Keywords: лазерный доплеровский измеритель, трёхмерный вектор скорости, неравномерная дискретизация, фильтрация, многомерная интерполяция, laser Doppler measurer, three-dimensional velocity vector, uneven sampling, filtering, multidimensional interpolation
Abstract
This paper describes the method for determining the three-dimensional velocity vector of the flow using the laser Doppler measurements of unevenly sampled components. This method is based on the filtering and linear interpolation of the measured velocity components in the circuit channels. It is shown in the numerical simulation and physical experiment that the method error does not exceed 2 % and the results of interpolation with respect to the closest points are several times greater.
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