Abstract
A new probe for the simultaneous measurement of fluctuating velocity and static pressure has been developed. To improve the accuracy of the simultaneous measurement of the velocity and static pressure, it is necessary to suitably arrange the hot-wire and static pressure probes. In this study, the tip of the static pressure tube is first changed from the previous conical shape to the hemispherical one. Next the static pressure probe is mounted between the X-type hot-wire probe. There is no difference between the measurement results of the static pressure obtained using two previous and present static pressure probes which consist of conical tip and hemispherical tip tubes respectively. In addition, at high-frequency ranges, the -7/3 power law can be verified more clearly in the power spectra obtained using the new (hemispherical tip) combined probe. Therefore, it is concluded that by changing the arrangement of probes, the smaller fluctuations in turbulent flows can be measured by the new combined probe.
