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Abstract
The design, fabrication and calibration details of a sub miniature Kiel probe for three-dimensional boundary layer measurements are presented in this paper. The probe has a nominal measurement dimension of 0.3 mm and a shroud size of 0.7 mm in the boundary layer direction thus minimizing spatial and flow gradient errors. The probe is calibrated in a calibration tunnel at a velocity of 50 m/s in the yaw and pitch angle ranges of ± 45° and ± 25° at 5° interval respectively. The non-dimensional pressure measured by the probe is plotted as contours. The non-dimensional pressure has a value within ± 1% of total pressure in the yaw and pitch angle ranges of ± 40° and ± 15° respectively. The probe is used to measure total pressure at the exit of a centrifugal impeller at four volume flows. The total pressure measured is found to follow expected trends.
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References
- Kiel, G., "Total Head Meter with Small Sensitivity to Yaw", NASA TM 775, August 1935 (Translation of "Gesamtdruckgorat mit grosser Uncmpfindlichkeit gogen Schraganstomung", Luftfahrtforschung. Vol.XII, No.2, May, 16, pp.75-79, 1935).
- Spivak, J. A., "Development of a Fast-Response Total Pressure Probe for use in An Axial Flow Fan", TM No.79-182, Applied Research Laboratory, The Pennsylvania State University, State College, PA 16801, USA, 1979.
References
Kiel, G., "Total Head Meter with Small Sensitivity to Yaw", NASA TM 775, August 1935 (Translation of "Gesamtdruckgorat mit grosser Uncmpfindlichkeit gogen Schraganstomung", Luftfahrtforschung. Vol.XII, No.2, May, 16, pp.75-79, 1935).
Spivak, J. A., "Development of a Fast-Response Total Pressure Probe for use in An Axial Flow Fan", TM No.79-182, Applied Research Laboratory, The Pennsylvania State University, State College, PA 16801, USA, 1979.