This work presents the development of a data reduction algorithm for non-nulling, multihole pressure probes in compressible, subsonic flowfields. The algorithm is able to reduce data from any 5- or 7-hole probe and generate very accurate predictions of the velocity magnitude and direction, total and static pressures, Mach and Reynolds number and fluid properties like the density and viscosity. The algorithm utilizes a database of calibration data and a local least-squares interpolation technique. It has been tested on four novel miniature 7-hole probes that have been calibrated at NASA Langley Flow Modeling and Control Branch for the entire subsonic regime. Each of the probes had a conical tip with diameter of 1.65 mm. Excellent prediction capabilities are demonstrated with maximum errors in angle prediction less than 0.6 degrees and maximum errors in velocity prediction less than 1 percent, both with 99 percent confidence.
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March 2001
Technical Papers
The Compressible Calibration of Miniature Multi-Hole Probes
Espen S. Johansen, Graduate Research Assistant,,
Espen S. Johansen, Graduate Research Assistant,
Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3141
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Othon K. Rediniotis, Associate Professor,,
Othon K. Rediniotis, Associate Professor,
Department of Aerospace Engineering, Texas A&M University, College Station, TX 77843-3141
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Greg Jones, Research Scientist,
Greg Jones, Research Scientist,
Flow Modeling and Control Branch, NASA Langley Research Center, Hampton, VA 23681-0001
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Espen S. Johansen, Graduate Research Assistant,
Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3141
Othon K. Rediniotis, Associate Professor,
Department of Aerospace Engineering, Texas A&M University, College Station, TX 77843-3141
Greg Jones, Research Scientist,
Flow Modeling and Control Branch, NASA Langley Research Center, Hampton, VA 23681-0001
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division February 22, 2000; revised manuscript received September 6, 2000. Associate Editor: K. Zaman.
J. Fluids Eng. Mar 2001, 123(1): 128-138 (11 pages)
Published Online: September 6, 2000
Article history
Received:
February 22, 2000
Revised:
September 6, 2000
Citation
Johansen, E. S., Rediniotis, O. K., and Jones, G. (September 6, 2000). "The Compressible Calibration of Miniature Multi-Hole Probes ." ASME. J. Fluids Eng. March 2001; 123(1): 128–138. https://doi.org/10.1115/1.1334377
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