Some remarks on the spatial resolution effects of a hot-wire technique

An imperfect spatial resolution of a hot-wire anemometry makes it necessary to introduce a suitable correction procedure into the data processing. To derive the required correction functions based commonly on the assumption of isotrppy and homogeneity of turbulence structure there is a need to adopt a certain form of E(k) spectrum, describing the turbulence energy distribution in a high wavenumber range. The paper analyses to what extent the given form of E(k) spectrum affects the numerically computed values of the particular correction functions. The obtained results have been compared with the available experimental data.