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首页> 外文期刊>International Journal of Marine Engineering Innovation and Research >Analysis of Lift and Drag of Mono-foil Hysucat due to Longitudinal Foil-placement Variation
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Analysis of Lift and Drag of Mono-foil Hysucat due to Longitudinal Foil-placement Variation

机译:纵向箔放置变化引起的单箔Hysuucat升力与拖曳分析

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CFD simulations were conducted to study the effects of a hydrofoil and its relative placement in the longitudinal direction on the total resistance of a mono-foil hysucat (hydrofoil supported catamaran). Three foil positions were considered: (i) precisely below the vessel’s center of gravity, (ii) 3 chord-lengths aft from position 1 and (iii) 6 chord-lengths aft from position 1. At relatively low speed (volumetric Froude number FnV 1.8), the hydrofoil results in an increase of the total resistance of the hysucat (up to 4.43%). At relatively high speed (FnV 1.8), the hydrofoil results in a decrease of the total resistance (up to 34.86%). The resistance coefficient first increases, takes a maximum value and then decreases with increasing Froude number. The maximum value is observed at FnV ≈ 1.4 (or Fn ≈ 0.5), consistent with previous observations. The most optimum foil placement is that precisely below the center of gravity of the vessel.
机译:进行CFD仿真以研究水翼膜的影响及其在纵向方向上的纵向上的纵向对单箔Hysucat的总电阻(水翼杆支撑的双杀筏)。 考虑了三个箔位置:(i)精确低于血管的重心,(ii)3弦长从位1和(iii)6弦长的速度从位置1.在相对较低的速度(体积Froude Number FNV中 1.8),水翼导致Hysucat的总抗性增加(高达4.43%)。 在相对高的速度(FNV 1.8)中,水翼仪导致总阻力的降低(高达34.86%)。 电阻系数首先增加,提高最大值,然后随着弗劳德数的增加而降低。 在FNV≈1.4(或Fn≈0.5),符合先前的观察结果,观察到最大值。 最佳的箔放置在容器的重心下方。

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