Comparison of Experimental Surface and Flow Field Measurements to Computational Results of the Juncture Flow Model (JFM)
| Autor: | Gregory G. Zilliac, Laura Simurda, Thomas H. Pulliam, Henry C. Lee, Nettie Roozeboom |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
020301 aerospace & aeronautics
business.industry Flow (psychology) Fluid mechanics 02 engineering and technology Mechanics Computational fluid dynamics 01 natural sciences 010305 fluids & plasmas Boundary layer 0203 mechanical engineering Fuselage 0103 physical sciences Horseshoe vortex business Geology Juncture Wind tunnel |
| Zdroj: | 54th AIAA Aerospace Sciences Meeting. |
| DOI: | 10.2514/6.2016-1558 |
| Popis: | Wing-body juncture flow fields on commercial aircraft configurations are challenging to compute accurately. The NASA Advanced Air Vehicle Program's juncture flow committee is designing an experiment to provide data to improve Computational Fluid Dynamics (CFD) modeling in the juncture flow region. Preliminary design of the model was done using CFD, yet CFD tends to over-predict the separation in the juncture flow region. Risk reduction wind tunnel tests were requisitioned by the committee to obtain a better understanding of the flow characteristics of the designed models. NASA Ames Research Center's Fluid Mechanics Lab performed one of the risk reduction tests. The results of one case, accompanied by CFD simulations, are presented in this paper. Experimental results suggest the wall mounted wind tunnel model produces a thicker boundary layer on the fuselage than the CFD predictions, resulting in a larger wing horseshoe vortex suppressing the side of body separation in the juncture flow region. Compared to experimental results, CFD predicts a thinner boundary layer on the fuselage generates a weaker wing horseshoe vortex resulting in a larger side of body separation. |
| Databáze: | OpenAIRE |
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