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titleWall Interference Analysis by Whole Wind Tunnel CFD
Author(jpn)橋本, 敦; 香西, 政孝
Author(eng)Hashimoto, Atsushi; Kohzai, Masataka
Author Affiliation(jpn)宇宙航空研究開発機構研究開発本部数値解析グループ(JAXA); 宇宙航空研究開発機構研究開発本部数値解析グループ(JAXA)
Author Affiliation(eng)Numerical Analysis Group, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA); Numerical Analysis Group, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA)
Issue Date2013-11-30
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構特別資料
JAXA Special Publication
Start page103
End page113
Publication date2013-11-30
AbstractFor wall interference correction, the potential-based methods such as Mokry’s method are commonly used. In fact, the linear correction methods cannot be used for transonic and stall conditions. In this study, the Mokry’s method is applied to wind tunnel CFD, and the corrected aerodynamic coefficients are compared with CFD without wall to investigate validity and limitation of the method. We have simulated the whole wind tunnel flow of JAXA 2m×2m Transonic Wind Tunnel (JTWT). The pressure distribution on the wind tunnel wall agrees well with the measurements. In addition, the computed C(L) and C(D) agree well with the measured values. The differences between standard and long stings are almost same as the experiment. It is found that the aerodynamic characteristics of ONERA-M5 and its wall/support interferences are well reproduced in this computation. In the case of M=0.7, long sting, and α=0 deg, the results corrected by the Mokry’s method show good agreement with those without wall. However, the accuracy is degenerated by shock wave, separation, and support interference, since the Mokry’s method is based on the linear potential theory. It is found that the effect of support interference is not so large, whereas the effect of separation is serious.
Description形態: カラー図版あり
Meeting Information: 5th Symposium on Integrating CFD and Experiments in Aerodynamics (October 3-5, 2012, Chofu Aerospace Center, Japan Aerospace Exploration Agency (JAXA)), Chofu, Tokyo, Japan
Physical characteristics: Original contains color illustrations
KeywordsWind tunnel; CFD; Wall interference
Document TypeConference Paper
JAXA Category特別資料
NASA Subject CategoryAerodynamics
Report NoJAXA-SP-13-001E

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