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Abstract
The design and fabrication details of a nine hole pressure probe for measurement of flow with large angles are presented. The probe is calibrated at a velocity of 40 m/s in a yaw range of ±90° and a pitch range of -70° to 90° at intervals of 10°. The calibration space is divided into 9 zones, in each of which pressure from one of the nine holes is maximum. Calibration coefficients based on the pressures from this hole and other holes around this hole are defined in each of these zones. Additional data acquired during the calibration are used to validate the data reduction method. The errors in total and static pressures and flow velocity and angles are found to be small.
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References
- Treaster, A. L. and Yocum A. M., "The Calibration and Application of Five-hole Probes", ISA Transactions, Vol.18, No.3, 1979, pp.23-34.
- Venkateswara Babu, C., Govardhan, M. and Sitaram, N., "A Method of Calibration of a Seven-hole Pressure Probe for Measuring Highly Three-dimensional Flows", Measurement Science and Technology, Vol.9, 1998, pp.468-476.
- Pisasale, A. J. and Ahmed, N. A., "A Novel Method for Extending the Calibration Range of Five-hole Probe for Highly Three-dimensional Flows", Flow Measurement and Instrumentation, Vol.13, Vol.(1- 2), 2002, pp.23-30.
- Ramakrishnan, V. and Rediniotis, O. K., "Development of a 12-hole Omnidirectional Flow Velocity Measurement Probe", AIAA Journal, Vol.45, No.6, 2007, pp.1430-1432.
- Shepherd, I. C., "A Four Hole Pressure Probe for Fluid Flow Measurements in Three Dimensions", ASME Journal of Fluids Engineering, Vol.103, No.4, 1981, pp.590-594.
- Everett, K. N., Gerner, A. A. and Durston, D. A., "Seven-Hole Cone Probes for High Angle Flow Measurement: Theory and Calibration", AIAA Journal, Vol.21, No.7, 1983, pp.992-998.
- Sitaram, N. and Govardhan, M., "Large Angle Calibration of Five-hole Probes", Journal of the Aeronautical Society of India, Vol.54, No.3, 2002, pp.265-272.
- Sitaram, N., Lakshminarayana, B. and Ravindranath, A., "Conventional Probes for Relative Flow Measurements in Turbomachinery Rotor Blade Passage", ASME Journal of Engineering for Power, Vol.103, No.2, 1981, pp.406-414.
References
Treaster, A. L. and Yocum A. M., "The Calibration and Application of Five-hole Probes", ISA Transactions, Vol.18, No.3, 1979, pp.23-34.
Venkateswara Babu, C., Govardhan, M. and Sitaram, N., "A Method of Calibration of a Seven-hole Pressure Probe for Measuring Highly Three-dimensional Flows", Measurement Science and Technology, Vol.9, 1998, pp.468-476.
Pisasale, A. J. and Ahmed, N. A., "A Novel Method for Extending the Calibration Range of Five-hole Probe for Highly Three-dimensional Flows", Flow Measurement and Instrumentation, Vol.13, Vol.(1- 2), 2002, pp.23-30.
Ramakrishnan, V. and Rediniotis, O. K., "Development of a 12-hole Omnidirectional Flow Velocity Measurement Probe", AIAA Journal, Vol.45, No.6, 2007, pp.1430-1432.
Shepherd, I. C., "A Four Hole Pressure Probe for Fluid Flow Measurements in Three Dimensions", ASME Journal of Fluids Engineering, Vol.103, No.4, 1981, pp.590-594.
Everett, K. N., Gerner, A. A. and Durston, D. A., "Seven-Hole Cone Probes for High Angle Flow Measurement: Theory and Calibration", AIAA Journal, Vol.21, No.7, 1983, pp.992-998.
Sitaram, N. and Govardhan, M., "Large Angle Calibration of Five-hole Probes", Journal of the Aeronautical Society of India, Vol.54, No.3, 2002, pp.265-272.
Sitaram, N., Lakshminarayana, B. and Ravindranath, A., "Conventional Probes for Relative Flow Measurements in Turbomachinery Rotor Blade Passage", ASME Journal of Engineering for Power, Vol.103, No.2, 1981, pp.406-414.