Extended Calibration Technique of a Four-Hole Probe for Three-Dimensional Flow Measurements
The present paper reports the development and nonnulling calibration technique to calibrate a cantilever type cylindrical four-hole probe of 2.54 mm diameter to measure three-dimensional flows. The probe is calibrated at a probe Reynolds number of 9525. The probe operative angular range is extended...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2016/5327297 |
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| author | Suresh Munivenkatareddy Nekkanti Sitaram |
| author_facet | Suresh Munivenkatareddy Nekkanti Sitaram |
| author_sort | Suresh Munivenkatareddy |
| collection | DOAJ |
| description | The present paper reports the development and nonnulling calibration technique to calibrate a cantilever type cylindrical four-hole probe of 2.54 mm diameter to measure three-dimensional flows. The probe is calibrated at a probe Reynolds number of 9525. The probe operative angular range is extended using a zonal method by dividing into three zones, namely, center, left, and right zone. Different calibration coefficients are defined for each zone. The attainable angular range achieved using the zonal method is ±60 degrees in the yaw plane and −50 to +30 degrees in the pitch plane. Sensitivity analysis of all the four calibration coefficients shows that probe pitch sensitivity is lower than the yaw sensitivity in the center zone, and extended left and right zones have lower sensitivity than the center zone. In addition, errors due to the data reduction program for the probe are presented. The errors are found to be reasonably small in all the three zones. However, the errors in the extended left and right zones have slightly larger magnitudes compared to those in the center zone. |
| format | Article |
| id | doaj-art-d205ae8f7c524654a8ddf0d0c2bcee32 |
| institution | DOAJ |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-d205ae8f7c524654a8ddf0d0c2bcee322025-08-20T03:24:01ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342016-01-01201610.1155/2016/53272975327297Extended Calibration Technique of a Four-Hole Probe for Three-Dimensional Flow MeasurementsSuresh Munivenkatareddy0Nekkanti Sitaram1Thermal Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600 036, IndiaThermal Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600 036, IndiaThe present paper reports the development and nonnulling calibration technique to calibrate a cantilever type cylindrical four-hole probe of 2.54 mm diameter to measure three-dimensional flows. The probe is calibrated at a probe Reynolds number of 9525. The probe operative angular range is extended using a zonal method by dividing into three zones, namely, center, left, and right zone. Different calibration coefficients are defined for each zone. The attainable angular range achieved using the zonal method is ±60 degrees in the yaw plane and −50 to +30 degrees in the pitch plane. Sensitivity analysis of all the four calibration coefficients shows that probe pitch sensitivity is lower than the yaw sensitivity in the center zone, and extended left and right zones have lower sensitivity than the center zone. In addition, errors due to the data reduction program for the probe are presented. The errors are found to be reasonably small in all the three zones. However, the errors in the extended left and right zones have slightly larger magnitudes compared to those in the center zone.http://dx.doi.org/10.1155/2016/5327297 |
| spellingShingle | Suresh Munivenkatareddy Nekkanti Sitaram Extended Calibration Technique of a Four-Hole Probe for Three-Dimensional Flow Measurements International Journal of Rotating Machinery |
| title | Extended Calibration Technique of a Four-Hole Probe for Three-Dimensional Flow Measurements |
| title_full | Extended Calibration Technique of a Four-Hole Probe for Three-Dimensional Flow Measurements |
| title_fullStr | Extended Calibration Technique of a Four-Hole Probe for Three-Dimensional Flow Measurements |
| title_full_unstemmed | Extended Calibration Technique of a Four-Hole Probe for Three-Dimensional Flow Measurements |
| title_short | Extended Calibration Technique of a Four-Hole Probe for Three-Dimensional Flow Measurements |
| title_sort | extended calibration technique of a four hole probe for three dimensional flow measurements |
| url | http://dx.doi.org/10.1155/2016/5327297 |
| work_keys_str_mv | AT sureshmunivenkatareddy extendedcalibrationtechniqueofafourholeprobeforthreedimensionalflowmeasurements AT nekkantisitaram extendedcalibrationtechniqueofafourholeprobeforthreedimensionalflowmeasurements |