Robust procedure for multi-hole probe data processing

Abstract Multi-hole probes represent a durable and economic option to measure flow angles, total and static pressures in complex flow environments. The pressure readings are converted into flow direction using pressure calibration maps. However, depending on the geometry or manufacturing imperfections, conventional flow angle data reduction methods cannot guarantee uniqueness in the solution. This paper presents and demonstrates a novel data processing approach in a turbine measurement campaign. The new technique relies on a database of non-dimensional pressures (one per hole) instead of differential pressure levels. In addition, the new approach allows computing flow direction when a hole is blocked during the test campaign.

[1]  Guillermo Paniagua,et al.  Investigation of the steady and unsteady performance of a transonic HP turbine , 2002 .

[2]  J. M. Fernández Oro,et al.  Head geometry effects on pneumatic three-hole pressure probes for wide angular range , 2010 .

[3]  Othon K. Rediniotis,et al.  The Compressible Calibration of Miniature Multi-Hole Probes , 2001 .

[4]  Othon K. Rediniotis,et al.  Miniature Multihole Pressure Probes and Their Neural-Network-Based Calibration , 1999 .

[5]  Howard P. Hodson,et al.  An investigation of factors influencing the calibration of 5-hole cone and pyramid probes , 1993 .

[6]  D. W. Bryer,et al.  Pressure-probe methods for determining wind speed and flow direction , 1971 .

[7]  Mukka Govardhan,et al.  A method of calibration of a seven-hole pressure probe for measuring highly three-dimensional flows , 1998 .

[8]  G. Zilliac,et al.  Modelling, calibration, and error analysis of seven-hole pressure probes , 1993 .

[9]  R. W. Gallington,et al.  Measurement of very large flow angles with non-nulling seven-hole probes , 1981 .

[10]  Peter Kupferschmied,et al.  On Fast-Response Probes: Part 1—Technology, Calibration, and Application to Turbomachinery , 1995 .

[11]  Gerald L. Morrison,et al.  Five-hole pressure probe analysis technique , 1998 .

[12]  N. A. Ahmed,et al.  A novel method for extending the calibration range of five-hole probe for highly three-dimensional flows , 2002 .

[13]  Othon K. Rediniotis,et al.  Application of Neural Networks and Fuzzy Logic to the calibration of the seven-hole probe , 1998 .

[14]  I. Milanovic,et al.  Numerical calibration of a conical five-hole probe for supersonic measurements , 2000 .

[15]  William J. Devenport,et al.  Seven-Hole Pressure Probe Calibration Method Utilizing Look-Up Error Tables , 1999 .

[16]  D. Sumner.  A Comparison of Data-Reduction Methods for a Seven-Hole Probe , 2002 .

[17]  Howard P. Hodson,et al.  A New Method of Data Reduction for Single-Sensor Pressure Probes , 1999 .

[18]  G. Zilliac,et al.  Calibration of seven-hole pressure probes for use in fluid flows with large angularity , 1989 .

[19]  Narayanan Ramachandran,et al.  Probabilistic and Other Neural Nets in Multi-Hole Probe Calibration and Flow Angularity Pattern Recognition , 2014, Pattern Analysis & Applications.

[20]  Howard P. Hodson,et al.  An Investigation of Factors Influencing the Calibration of Five-Hole Probes for Three-Dimensional Flow Measurements , 1993 .

[21]  L. N. Krause,et al.  Flow-direction measurement with fixed-position probes , 1969 .

[22]  W. J. Bannink,et al.  The calibration and measuring procedure of a five-hole hemispherical head probe in compressible flow , 1989 .

[23]  A J Pisasale,et al.  Theoretical calibration for highly three-dimensional low-speed flows of a five-hole probe , 2002 .