This paper presents the measurements results of the velocity field of a flow
with vortical character behind a cylindrical model with a semispherical
head. Three different measuring methods have been used, i.e.: Laser –
Doppler – Anemometer (LDA),
Hotwire – Anemometer and Five – Hole –
Pressure -Probe.
A comparison between the obtained experimental results has been made
aiming to specify the accuracy and reliability of the velocity values,
measured by means of the a. m. three methods, and accordingly to
determine the reliable measurement range of each of these methods, taking
into consideration that the LDA – measurements results are the more
accurate and reliable ones, since LDA does not create any disturbances of
the flow field.
