A technique for flow measurement in separated flow

Gupta, Ramesh P (1974) A technique for flow measurement in separated flow. Technical Report. National Aeronautical Laboratory, Bangalore, India.

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    A new three-tube pressure-probe is developed for measurement of flow direction, and dynamic and total pressure in two-dimensional separated flows. Unlike all earlier probes, it is asymmetric. The arrangement of side tubes, which is responsible for the asymmetry, allows it to be used in thin shear layers and close to wall, where earlier probes tended to be inaccurate. A pitching apparatus is designed to align the probe in the flow direction. Measurements with the new probe are compared with classical pitot tube measurements and well-known emperical laws in zero-pressure-gradient turbulent boundary-layer and fully developed pipe flow. The comparison shows that the new probe can be effectively used, with uniform flow calibration, in a shear flow outside a region of about two probe-tube diameter thickness from a wall. The capability of the new probe in surveying complex flow fields is demonstrated by measurements in wall-jet induced separation.

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Flow measurement;Pitot tube;Separated flow
    Subjects: ENGINEERING > Fluid Mechanics and Thermodynamics
    Division/Department: Aerodynamics
    Depositing User: Mr. Ravikumar R
    Date Deposited: 21 Aug 2006
    Last Modified: 24 May 2010 09:49
    URI: http://nal-ir.nal.res.in/id/eprint/2563

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