E223 MJVGによる翼型剥離能動制御の数値解析(E-22 乱流現象の制御,一般講演)

概要

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In order to obtain clues for the optimal operation conditions and special distribution of the micro-jet vortex generator (MJVG), a series of numerical simulation was carried out. The MEL001 airfoil was chosen as a model blade for the present simulation. The flow Reynolds numbers were set as 50,000 and 200,000. The MJVG was placed at locations 0% and 30% cord lengths. The main results are: 1) Although the optimum operation conditions for MJVG have not yet found, we observed that at Re=50,000 and attack angle α=6°, ratio of the lift and drag coefficients increases by 8% at Xc=0% and by 16% at Xc=30%. 2) At Re=200,000, even though the lift coefficient decreases for both MJVG positions of 0% and 30%, the ratio of the lift and drag coefficients also increases about 5%. One possibility for this may be attributed to the skin friction reduction by the longitudinal vortices. But we should examine the true reason in future.
日本流体力学会の論文
2004-08-09