Instantaneous Two-directional Velocity Measurement by Sensitive Pressure Detecting Method

Abstract

In this report, two-directional velocity measuring technique with pressure detecting probes is developed with the intention of obtaining in real time the velocity vector in the flow fields accompanying combustion. Preferable shape of pressure heads and dimensions of pressure conducting tube were decided, and electronically processing circuit which enables realtime measurement was devised. Examination was made on such the applicability of this method as the extent of velocity and flow direction, and evaluation was made on the errors which may arise in the measurement of flow with velocity gradient. Finally, this technique was applied to the simultaneous measurement of velocity vector, temperature and their correlation functions in a turbulent jet flame.