The main strategy should include in itself the use of three-dimensional flow theory, improvement of vanes stacking skill, control of hydraulic losses, and use of CFD in vane design procedure.
采用三维流动理论，改变叶片造型方法，控制水力损失和引入CFD方法是提升现有轴流泵叶片设计的主要策略。
In order to obtain transient mathematical model as vectoring deflection which is very important in engineering and valuable in theory, three-dimensional and unsteady flow fields must be researched.
由于气流在喷管流动中具有复杂的三维非定常的特征，因此，建立其动态数学模型有着更为重要的工程及理论价值。
From the plastic flow theory, the three-dimensional deformations and stresses of the deformation zone are formulated.
根据塑性力学流动理论，分析推导了变形区三维变形和应力的数学模型。
The compressible linear stability theory and the method of multiple scales are used to study the problem of three dimensional nonparallel flow stability for boundary layers.
采用线性稳定性理论和多重尺度方法，研究三维可压缩的非平行流边界层稳定性问题。
In this paper, the nonlinear diffraction problem is studied with potential flow theory in frequency domain for three-dimensional floating body sailing in waves on deep water.
本文应用势流理论和频域方法研究了三维浮体在深水域波浪中航行时的非线性绕射问题，该问题包括非线性兴波问题和非线性绕射问题。
The three dimensional potential flow theory is applied to the analysis of the steady flow field of PWR upper Plenum.
本文将三维势流理论应用于压水堆上腔室稳态流扬分析。
According to the "General Theory of Three-Dimensional flow in Turbomachines", the quasi-three dimensional calculation of the transonic flow field has been achieved for a compressor rotor.
本文依据三元流动的通用理论，完成了一个跨声速压气机转子流场的准三元迭代计算。
In this article the mathematical expression of field synergy theory for three dimensional flow with centrifugal force was derived by integrating the energy equation in the concerned volume.
通过对能量方程进行体积分得到了三维流场中场协同理论的表达式。该式不仅含速度矢量与温度梯度矢量的点积项，还含有速度矢量与压力梯度矢量的点积项。
In this article the mathematical expression of field synergy theory for three dimensional flow with centrifugal force was derived by integrating the energy equation in the concerned volume.
通过对能量方程进行体积分得到了三维流场中场协同理论的表达式。该式不仅含速度矢量与温度梯度矢量的点积项，还含有速度矢量与压力梯度矢量的点积项。
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