Author(s)

M. Pohanka

Abstract

Two-dimensional correction of data measured using a large pressure sensor M. Pohanka Faculty of Mechanical Engineering, Brno University of Technology, Czech Republic. Abstract Various nozzle applications require description of a pressure impact field, which can mostly be done only by measurement. This paper describes how to obtain precise results using a real finite-size pressure sensor. In some cases, the impact distribution is very small or at least very narrow. Measuring such distributions with a pressure sensor, which is not small enough, results in incorrect data. The pressure is being averaged during the measurement and the shape of the obtained spray distribution is larger and the measured pressure maximum is lower than the real one. This paper describes how to correct the measured spray distribution. A two-dimensional Fast Fourier Transformation (FFT) is used to convert both the measured data and pressure sensor to the frequency domain. The correction of the measured spray distribution

Keywords