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Research Papers: Fundamental Issues and Canonical Flows

Verification and Validation in Fluids Engineering: Some Current Issues

[+] Author and Article Information
Patrick J. Roache

Life Fellow ASME
1215 Apache Drive,
Socorro, NM 87801
e-mail: hermosa@sdc.org

Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received March 30, 2016; final manuscript received June 3, 2016; published online August 3, 2016. Assoc. Editor: Francine Battaglia.

J. Fluids Eng 138(10), 101205 (Aug 03, 2016) (11 pages) Paper No: FE-16-1206; doi: 10.1115/1.4033979 History: Received March 30, 2016; Revised June 03, 2016

The following current issues in verification and validation (V&V) are discussed: probability bounds analysis (PBA) versus the traditional probability distribution function (PDF) approach as used in the ANSI Standard document ASME V&V 20-2009; strict frequentist versus Bayesian approaches; model form uncertainty (and confusion) in prediction versus validation; Popper's philosophical falsificationism versus common sense; climate model trend validations versus climate change deniers; and V&V state of the art versus practice. Also, the many fundamental contributions to modern V&V practice in the history of the ASME Fluids Engineering Division and the Journal of Fluids Engineering (JFE) are described.

FIGURES IN THIS ARTICLE
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Copyright © 2016 by ASME
Topics: Uncertainty
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References

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Celik, I. , Chen, C. J. , Roache, P. J. , and Scheurer, G. , eds., 1993, Proceedings: Symposium on Quantification of Uncertainty in Computational Fluid Dynamics, ASME, New York, FED-Vol. 158.
Cadafalch, J. , Pérez-Segarra, C. C. , Cónsul, R. , and Oliva, A. , 2002, “ Verification of Finite Volume Computations on Steady State Fluid Flow and Heat Transfer,” ASME J. Fluids Eng., 124(1), pp. 11–21. [CrossRef]
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Figures

Grahic Jump Location
Fig. 1

CDF for single-valued probabilistic (aleatory) uncertainty (degenerate p-box). From Fig. 12.20(c), p. 527 of Ref. [3], with permission.

Grahic Jump Location
Fig. 2

CDF (p-box) for a purely interval-valued (epistemic) uncertainty. From Fig. 12.20(b), p. 527 of Ref. [3], with permission.

Grahic Jump Location
Fig. 3

CDF (p-box) for a mixture of single-valued probabilistic (aleatory) uncertainty and interval-valued (epistemic) uncertainty. From Fig. 12.20(a), p. 527 of Ref. [3], with permission.

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