在估算紧密编队飞行中长机翼尖涡对僚机的影响时，本文在所用到涡模型中也考虑了由空气粘性引起的涡流随时间的衰减效应。
We also consider the effect of vortex decay over time caused by the viscidity of atmosphere in our vortex model in estimating the vortex effect experienced during the close proximity formation flight.
本文主要研究高维空间中带有退化粘性的标量守恒律方程的光滑解的整体存在性，以及该解逼近强平面稀疏波的衰减率。
This paper is concerned with the decay rates of the solution to the strong planar rarefaction waves for scalar conservation laws with degenerate viscosity in several space dimensions.
人工粘性能够较好地抑制冲击波压力计算中出现的数值振荡，但同时也引起了冲击波峰值的衰减。
The artificial viscosity can control the oscillations trailing the shock front, but it also weakened the peak pressure.
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