The effects of tip shape on Reynolds number sensitivity of a seven hole pressure probe are studied over a range of flows associated with practical use of turbomachinery. It is shown that at low flow angles the response of a conical or hemispherical tipped probe is independent of a Reynolds number above Re = 3000, and at high flow angles Re = 6000. Despite there not being a discernible difference in the average error in flow properties at different Reynolds numbers between the two tip shapes, it is shown that the hemispherical tip is preferred because the pressure distributions around the tip are more consistent.
Influence of Tip Shape on Reynolds Number Sensitivity for a Seven Hole Pressure Probe
Contributed by the Controls, Diagnostics and Instrumentation Committee of ASME for publication in the Journal of Engineering for Gas Turbines and Power. Manuscript received June 26, 2013; final manuscript received June 28, 2013; published online August 19, 2013. Editor: David Wisler.
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Crawford, J., and Michael Birk, A. (August 19, 2013). "Influence of Tip Shape on Reynolds Number Sensitivity for a Seven Hole Pressure Probe." ASME. J. Eng. Gas Turbines Power. September 2013; 135(9): 091602. https://doi.org/10.1115/1.4024950
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