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RESEARCH PAPERS: Papers From The 1983 WAM Symposium on Uncertainty Analysis—Theory and Practice of Experimental Control

Using Uncertainty Analysis in the Planning of an Experiment

[+] Author and Article Information
R. J. Moffat

Stanford University, Stanford, CA 94305

J. Fluids Eng. 107(2), 173-178 (Jun 01, 1985) (6 pages) doi:10.1115/1.3242452 History: Received March 20, 1985; Online October 26, 2009

Abstract

A simple example using convection heat transfer is used to illustrate the use of uncertainty analysis in PLANNING experiments. Major points made are: (i) the choice of test and data-reduction procedure can have important impact on the accuracy of the results, with one procedure better for some conditions and the other better in other ranges; (ii) it is important to specify carefully the level of replication (what is held constant and what varied in a given test), since otherwise an inappropriate value of uncertainty may be generated; (iii) reliable means for cross-checking and/or externally validating the results of an experiment are necessary if predicted uncertainties are to be confirmed; (iv) in experiments where data are reduced by computer, uncertainty analysis can be done by sequential perturbation, using the main data-reduction program itself.

Copyright © 1985 by ASME
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