Statistical analysis of CFD solutions from the drag prediction workshop | Zendy

Michael J. Hemsch | Zendy

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Statistical analysis of CFD solutions from the drag prediction workshop

Author(s) -

Michael J. Hemsch

Publication year - 2002

Publication title -

nasa sti repository (national aeronautics and space administration)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.2002-842

Subject(s) - computational fluid dynamics , drag , computer science , aerospace engineering , engineering

Michael J. Hemsch *NASA Langley Research CenterHampton, VAAbstractA simple, graphicalJ?amework ispresentedJbr robuststatistical evaluation of results obtained J?om ?¢Version testing of a series of RANS CFD codes. Thesolutions were obtained by a variety of codedevelopers and users Jor the June 2001 Drag SSDPrediction Workshop sponsored by the AIAA Applied TMAerodynamics Technical Committee. The aerodynamic xconfiguration usedJor the computational tests is the yDLR-F4 wing-body combination previously tested in 2several European wind tunnels and Jor which aprevious _Version test had been conducted. The xstatisticalJmmework is used to evaluate code results t2Jor (1) a single cruise design point, (2) drag polars fiand (3) drag rise. The paper concludes with a adiscussion of the meaning of the results, especiallywith respect to predictability, Validation, andreporting of solutions.NomenclatureANOM Analysis of MeansA0A angle of attackCD drag coefficientCD PR pressure drag coefficientCD SF skin-friction drag coefficientCD TOT total drag coefficientCL centerlineCL lift coefficientC;n pitching-moment coefficientDPW Drag Prediction WorkshopH ANOM coverage factork number of data groupsK coverage factor for individual valuesM Mach number

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