CFD Simulation of Flow Past Wing Body Junction: A 3-D Approach

al., Snigdha Mandapudi et al. Snigdha Mandapudi et

doi:10.24247/ijmperdaug201734

Cited by 3 publications

(1 citation statement)

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“…The effects of adding different fillets and strakes to the wing body junction on the wing performance have been studied in Mandapudi et al (2017) in which a reduction in the drag has been observed.…”

Section: Introductionmentioning

confidence: 99%

Taper stacking for the aerodynamic performance of wings

Kaya

Elfarra

2020

AEAT

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Purpose The critical Mach number, lift-to-drag ratio and drag force play important role in the performance of the wings. This paper aims to investigate the effect of taper stacking, which has been used to generalize wing sweeping, on those parameters. Design/methodology/approach The results obtained are based on steady-state turbulent flowfields computations. The baseline wing is ONERA M6. Various wing planforms are generated by linearly or parabolically varying the spanwise stacking location. The critical Mach number is determined by changing the freestream Mach number for a fixed angle of attack. On the other hand, the analysis of the drag force is carried out by changing the angle of attack to keep the lift force constant. Findings By changing the stacking location, the critical Mach number and the corresponding lift-to-drag ratio have increased by around 7 and 3%, respectively. A reduction of 12.8% in total drag force has been observed in one of the analyzed cases. Moreover, there exist some cases in which the values of drag reduce significantly while the lift is the same. Practical implications The results of this new stacking approach have implied that the drag force can be decreased without decreasing the lift. This outcome is valuable for increasing the range and endurance of an aircraft. Originality/value This work generalizes wing sweeping by modifying the taper stacking along the span. In literature, wing sweep is enhanced using segmented stacking of taper distribution. The present study is further enhancing this concept by introducing continuous stacking (infinite number of stacking segments) for the first time.

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Section: Introductionmentioning

confidence: 99%