Experimental methodology for computational fluid dynamics code validation

Technical Report · Mon Sep 01 04:00:00 EDT 1997

DOI:https://doi.org/10.2172/563720· OSTI ID:563720

Aeschliman, D P; Oberkampf, W L

Validation of Computational Fluid Dynamics (CFD) codes is an essential element of the code development process. Typically, CFD code validation is accomplished through comparison of computed results to previously published experimental data that were obtained for some other purpose, unrelated to code validation. As a result, it is a near certainty that not all of the information required by the code, particularly the boundary conditions, will be available. The common approach is therefore unsatisfactory, and a different method is required. This paper describes a methodology developed specifically for experimental validation of CFD codes. The methodology requires teamwork and cooperation between code developers and experimentalists throughout the validation process, and takes advantage of certain synergisms between CFD and experiment. The methodology employs a novel uncertainty analysis technique which helps to define the experimental plan for code validation wind tunnel experiments, and to distinguish between and quantify various types of experimental error. The methodology is demonstrated with an example of surface pressure measurements over a model of varying geometrical complexity in laminar, hypersonic, near perfect gas, 3-dimensional flow.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 563720
• Report Number(s): SAND--95-1189; ON: DE97009292; BR: DP010201100
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
COMPUTER CODES
DATA COVARIANCES
FLUID MECHANICS
VALIDATION
WIND TUNNELS