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Record Details

Record 27 of 29968
The pros and cons of code validation. [in aeronautical sciences]
Author and Affiliation:
Bobbitt, Percy J.(NASA Langley Research Center, Hampton, VA, United States)
Abstract: Computational and wind tunnel error sources are examined and quantified using specific calculations or experimental data, and a substantial comparison of theoretical and experimental results, or a code validation, is discussed. Wind tunnel error sources considered include wall interference, sting effects, Reynolds number effects, flow quality and transition, and instrumentation such as strain gage balances, electronically scanned pressure systems, hot film gages, hot wire anemometers, and laser velocimeters. Computational error sources include math model equation sets, the solution algorithm, artificial viscosity/dissipation, boundary conditions, the uniqueness of solutions, grid resolution, turbulence modeling, and Reynolds number effects. It is concluded that although improvements in theory are being made more quickly than in experiments, wind tunnel research has the advantage of the more realistic transition process of a right turbulence model in a free-transition test.
Publication Date: Jun 01, 1988
Document ID:
19880054898
(Acquired Nov 28, 1995)
Accession Number: 88A42125
Subject Category: RESEARCH AND SUPPORT FACILITIES (AIR)
Report/Patent Number: AIAA PAPER 88-2535
Document Type: Preprint
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
Description: 48p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AEROELASTICITY; COMPUTATIONAL FLUID DYNAMICS; ERROR ANALYSIS; HOT-WIRE ANEMOMETERS; WIND TUNNEL TESTS; MACH NUMBER; NAVIER-STOKES EQUATION; PITCHING MOMENTS; REYNOLDS NUMBER; STRAIN GAGES; TURBULENCE MODELS; WIND TUNNEL WALLS
Imprint And Other Notes: AIAA, Applied Aerodynamics Conference, 6th, Williamsburg, VA, June 6-8, 1988. 48 p.
Availability Source: Other Sources
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