由于前缘涡的影响，翼型厚度增加，平均压差阻力系数变小，甚至会出现负值。
As airfoil thickness is increased, the average pressure drag, affected by leading edge vortex is reduced even to be negative, and meanwhile friction has little increase.
结果表明，微裂缝性特低渗透油藏一维单向渗流的压力分布影响因素比较多，如启动压力梯度、变形系数、生产压差和排距等，并且这些因素均以非线性方式产生综合影响。
The single-phase porous flow plugged by mobile gels is nonlinear, the starting pressure of oil is lower than that of water, and the permeability of oil is higher than that of water.
结果表明，微裂缝性特低渗透油藏一维单向渗流的压力分布影响因素比较多，如启动压力梯度、变形系数、生产压差和排距等，并且这些因素均以非线性方式产生综合影响。
The single-phase porous flow plugged by mobile gels is nonlinear, the starting pressure of oil is lower than that of water, and the permeability of oil is higher than that of water.
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