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Record Details

Record 19 of 58016
Toward Scientific Numerical Modeling
Offline Availability: Go to Request Form
Author and Affiliation:
Kleb, Bil(NASA Langley Research Center, Hampton, VA, United States)
Abstract: Ultimately, scientific numerical models need quantified output uncertainties so that modeling can evolve to better match reality. Documenting model input uncertainties and verifying that numerical models are translated into code correctly, however, are necessary first steps toward that goal. Without known input parameter uncertainties, model sensitivities are all one can determine, and without code verification, output uncertainties are simply not reliable. To address these two shortcomings, two proposals are offered: (1) an unobtrusive mechanism to document input parameter uncertainties in situ and (2) an adaptation of the Scientific Method to numerical model development and deployment. Because these two steps require changes in the computational simulation community to bear fruit, they are presented in terms of the Beckhard-Harris-Gleicher change model.
Publication Date: Dec 03, 2007
Document ID:
20080002263
(Acquired Jan 09, 2008)
Subject Category: COMPUTER PROGRAMMING AND SOFTWARE
Document Type: Conference Paper
Meeting Information: NATO-RTO AVT-147 Symposium on Computational Uncertainty in Military Vehicle; 3-6 Dec. 2007; Athens; Greece
Contract/Grant/Task Num: WBS 599489.02.07.07.04.03
Financial Sponsor: NASA Langley Research Center; Hampton, VA, United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
Description: 12p; In English; Original contains color and black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution within the U.S. granted by agreement
NASA Terms: MATHEMATICAL MODELS; SIMULATION; PARAMETER IDENTIFICATION; SOFTWARE RELIABILITY; SOFTWARE ENGINEERING
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