3 edition of **A new algorithm for five-hole probe calibration, data reduction, and uncertainty analysis** found in the catalog.

A new algorithm for five-hole probe calibration, data reduction, and uncertainty analysis

- 2 Want to read
- 32 Currently reading

Published
**1994**
by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC], [Springfield, Va
.

Written in English

- Calibrating.,
- Data reduction.,
- Error analysis.,
- Flow measurement.,
- Pneumatic probes.,
- Pressure measurement.,
- Pressure sensors.,
- Velocity measurement.

**Edition Notes**

Statement | Bruce A. Reichert and Bruce J. Wendt. |

Series | NASA technical memorandum -- 106458 |

Contributions | Wendt, Bruce J., United States. National Aeronautics and Space Administration. |

The Physical Object | |
---|---|

Format | Microform |

Pagination | 1 v. |

ID Numbers | |

Open Library | OL17113896M |

Calibration (systematic) | Whenever possible, the calibration of an instrument should be checked before taking data. If a calibration standard is not available, the accuracy of the instrument should be checked by comparing with another instrument that is at least as precise, or by consulting the technical data provided by the manufacturer. to reduce data from key comparisons (Example E10), to combine measurement results for the same measurand obtained by diﬀerent methods (Example E12), and to characterize the uncertainty of calibration and analysis functions used in the measurement of force (Exam ple E32), temperature (Example E7), or composition of gas mixtures (Examples E

Two new calibration algorithms were developed for the calibration of non-nulling multi-hole probes in compressible, subsonic flowfields. The reduction algorithms are robust and able to reduce data from any multi-hole probe inserted into any subsonic flowfield to. Data Sampling Time 33 Data sampling time is the amount of time required to take one record or sample of data. It is dependent on the frequency span and the number of analyzer lines being used. T Sample = N lines / F span Using lines with a Hz frequency span .

Oct 01, · A method for the uncertainty estimation of probe calibrations using the power flux density (PFD) system of (18~) GHz recently developed at the National Institute of Metrology, China is presented. A measurement model is developed first, and then the sources of uncertainty and the corresponding evaluation procedures are explained. The method is used to estimate the uncertainty Author: Jin Yuan Li, Ming Xie. Twenty-Third Symposium on Naval Hydrodynamics. Washington, DC: The National Academies Press. doi: / â 03â 01â 02 Uncertainty Analysis in EFD, Guideline for Towing Tank Tests; and â 03â 01â 01 Uncertainty Analysis, Example for Resistance Test. (~%) due to scatter in the servo-probe calibration data.

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A NEW ALGORITHM FOR FIVE-HOLE PROBE CALIBRATION, DATA REDUCTION, AND UNCERTAINTY ANALYSIS Bruce A. Reichert and Bruce J. Wendt * Internal Fluid Mechanics Division NASA Lewis Research Center Cleveland, Ohio ABSTRACT A new algorithm for five-hole probe calibration and data re data reduction using a non-nulling method is developed.

The significant. A new algorithm for five-hole probe calibration and data reduction using a non-nulling method is developed. The significant features of the algorithm are: 1) two components of the unit vector in the flow direction replace pitch and yaw angles as flow direction variables, and 2) symmetry rules are developed that greatly simplify Taylor's series representations of the calibration data.

In data. Abstract. A new algorithm for five-hole probe calibration and data reduction using a non-nulling method is developed.

The significant features of the algorithm are: (1) two components of the unit vector in the flow direction replace pitch and yaw angles as flow direction variables; and (2) symmetry rules are developed that greatly simplify Taylor's series representations of the calibration johnsonout.com: Bruce J.

Wendt and Bruce A. Reichert. Keywords: Multi-hole pressure probe, Five-hole probe, calibration, three-dimensional flow, data reduction technique.

Introduction Five-hole probes are used to measure the three components of velocity, inflow angles, static and total pressures simultaneously for a point in a flow field.

A novel calibration algorithm for five-hole pressure probe norm alization and data reduction tech niques. A new. calibration data of a five-hole probe that were obtained employing the. The data reduction was data reduction by double interpolations using spline curve fitting.

The calibration and data reduction schemes are discussed and analysed. Results of the five-hole probe measurements in typical three-dimensional vor- tical flows, including velocity vectors in cross plane, pressure and vorticity contours are presented.

Jan 17, · The Oxford Probe is an open access five-hole probe designed for experimental aerodynamic measurements. The open access probe can be manufactured by the end user via additive manufacturing (metal or plastic).

The probe geometry, drawings, calibration maps, and software are available under a creative commons johnsonout.com by: 6. Aug 01, · The construction and application of an inexpensive five-hole probe rake is described.

Wendt BJ () A new algorithm for five-hole probe calibration, data reduction, and uncertainty analysis. NASA Technical Memorandum Treaster AL A new algorithm for five-hole probe calibration and data reduction and its application to a rake Cited by: 6.

Paul, et al [4], demonstrated a novel calibration algorithm for five-hole pressure probe. Here the steady-state measurements of three velocity components, inflow angles, static and total pressures simultaneously for a point in a flow field.

This article describes the historic development leading to current views on model calibration, and the algorithms and techniques that have been developed for estimating parameters, thereby enabling the model to mimic the behavior of the hydrologic system.

Manual techniques as well as automatic algorithms are addressed. Get this from a library. A new algorithm for five-hole probe calibration, data reduction, and uncertainty analysis. [Bruce A Reichert; Bruce J Wendt; United States.

National Aeronautics and. A new algorithm for five-hole probe calibration and data reduction using a non-nulling technique was developed, verified, and reported earlier (Wendt and Reichert, ).

The new algorithm's simplicity permits an analytical treatment of the propagation of uncertainty in five-hole probe johnsonout.com: Bruce J. Wendt and Bruce A. Reichert.

A new algorithm for five-hole probe calibration and data reduction using a non-nulling method is developed. The significant features of the algorithm are: (1) two components of the unit vector in the flow direction replace pitch and yaw angles as flow direction variables; and (2) symmetry rules are developed that greatly simplify Taylor's series representations of the calibration data.

•A paper on calibration of 5 hole probes:A paper on calibration of 5 hole probes: Reichert BA and Wendt BJ () A New Algorithm for Five-Hole Probe Calibration, Data Reduction, and Uncertainty Analysis.

NASA Technical Memorandum Robust procedure for multi-hole probe data processing. The new data processing algorithm is an iterative process, computed for every set of pressures provided by the probe. Reichert BA, Wendt BJ. A new algorithm for five-hole pressure probe calibration, data reduction and uncertainty analysis, Flow NASA TM; Cited by: J.

Weiz, An Algorithm for Using the Five-Hole Probe in the Non-Nulled Mode, The Applied Research Laboratory of the Pennsylvania State University, University Park, Pa, USA, B. Reichert and B. Wendt, A New Algorithm for Five-Hole Probe Calibration and Data Reduction and Its Application to a Rake-Type Probe, ASME-FED, Cited by: 1.

Five-hole pressure probes are becoming more useful with the development of small inexpensive fast response pressure transducers, computer controlled traversing systems, and computer based data acquisition and analysis.

A schematic of the end of a five-hole pressure probe is presented in Fig. The probe can be operated in two johnsonout.com by: uncertainty estimate of broadband radiometric data is performed on two specific components: (a) the uncertainty in the calibration of the measurement system and (b) the uncertainty in the routine or field measurement system.

This guide provides steps for evaluating the uncertainty in each of the calibration and measurement stages. The subject of this paper is a statistical method for the evaluation of the uncertainties for pneumatic multihole probe measurements.

The method can be applied to different types of evaluation algorithms and is suitable for steady flow-field measurements in compressible johnsonout.com by: 3.

Sep 10, · •AVA wedge probe and VKI needle probe is used to measure the transonic flow downstream of turbine cascades.

•A paper on calibration of 5 hole probes: Reichert BA and Wendt BJ () A New Algorithm for Five-Hole Probe Calibration, Data Reduction, and Uncertainty Analysis.

Calibration Uncertainties (Updated January 5) 1. General issues. Quantitative Assesment of CCD Radiation Damage A link to a Dotani-san report. XRT response and its effect on overall calibration. The current, released XRT effective area, as embodied by the FTOOL ASCAARF, has two empirical corrections (or fudges).Jun 15, · The paper presents the development and application of a three-sensor wedge probe to measure unsteady aerodynamics in a transonic turbine.

CFD has been used to perform a detailed uncertainty analysis related to probe-induced perturbations, in particular the separation zones appearing on the wedge apex. The effects of the Reynolds and Mach numbers are studied using both experimental data Cited by: 3.A Time Efficient Adaptive Gridding Approach and Improved Calibrations in Five-Hole Probe Measurements High length to diameter ratio of the tubing and manual pitch and yaw calibration cause increased uncertainty.

A new Calibration block diagram for Five-Hole Probe measure-ments.