机械和矿山工程中广泛使用锥形渐扩管。
A conical diffuser has been widely used in mechanical and mine engineering.
研究了渐缩自由桩和渐扩自由桩的桩顶纵向振动速度时域曲线特征；
The frequency response function, frequency-domain and time-domain expressions for the longitudinal vibration velocity at the pile top were obtained further.
计算结果表明，滑移边界条件的处理能显著改善干熄炉渐扩段的模拟；
The calculated results show that the disposal of slip boundary condition can substantially improve the simulation in expanding section of CDQ chamber;
和矩形结构相比，同样的工况下，渐扩结构射流轴向速度较小，径向速度较大。
Compared with rectangular chamber, the axial expansion velocity is small and radial expansion velocity is big in stepped-wall chamber under the same conditions.
本文采用颗粒相连续介质-轨道模型对同轴射流渐扩式高炉氧煤燃烧器内煤粉燃烧过程进行了数值模拟。
The numerical modeling of pulverized coal combustion in an oxygen coal combustor was made by using the continuum trajectory model.
本文采用颗粒相连续介质-轨道模型对同轴射流渐扩式高炉氧煤燃烧器内煤粉燃烧过程进行了数值模拟。
The numerical modeling of pulverized coal combustion in an oxygen coal combustor was made by using the continuum trajectory model.
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