查询词典 unsteady

He was holding the concrete safety rail with an unsteady hand.

他用那颤抖的手扶着混凝土栏杆。

Flapping and rotary gap have been investigated with the help of transonic unsteady aerodynamic forces.

使用跨音速非定常空气动力，对扑动间隙和旋转间隙进行研究。

Based on the nature vibrational characteristics of the flat wing calculated by finite element method , generalized unsteady aerodynamic forces matrix induced by the wing deformation is gotten by using strip theory , and thus the flutter model equation of the single wing is given .

文中提出了一种分析亚音速下弹翼颤振临界速度的工程计算方法，其中弹翼的固有振动特性用有限元方法计算，利用片条理论计算弹翼变形诱导的广义非定常气动力矩阵，从而得到单独翼的颤振模型方程。

Considing the complication of crenellated radial labyrinth geometry, a Taylor-Galerkin finite element scheme is developed to solve the multi-dimensional unsteady viscous convection-diffusion equation.

针对锯齿型迷宫密封几何形状的复杂性，发展了求解多维粘性非定常对流扩散方程的Taylor—Galerkin有限元法。

Studies on High Pressure and Unsteady Flame Phenomena; Final rept.

肥厚也可使大量肌纤维产生异常高的压力。

Studies on High Pressure and Unsteady Flame Phenomena; final rept.

乔把高尔夫球放在球座上准备打向最后的球穴。

After reviewing the related research work carried out by earlier researchers, a 1-D unsteady flow and sediment model is used as a tool to study the influence of time distortion upon physical models. It is aimed to get a fullscale and quantitative insight into this problem, especially the dynamic processes of flow and sediment transport.

本文回顾了前人对物理模型时间变态问题的研究，在此基础上，以一维不恒定流泥沙数学模型为工具，对实体模型试验中时间变态带来的影响进行了数值模拟，力图对时间变态带来的模拟结果的偏差有个全面和定量的认识。

The purpose of this thesis is focused on the solution of unsteady rotor/stator interaction in turbomachinery with arbitrary pitch ratio.

因此叶轮机械设计水平的提高将很大程度依赖于对其内部非定常流动的深入认识，本论文的研究工作主要针对转子和静子栅距不等时叶轮机械内部非定常流动的数值分析。

Phase-lagged cyclic boundary condition is implemented by a novel method in conjunction with the developed sliding interface technique to accurately simulate the arbitrary pitch ratio rotor/stator interaction without any modifications of the physics of the problem. It's for the first time to compose the computational area into one structured grids including both rotor/stator of centrifugal or axial turbomachinery with arbitrary pitch ratio. This method can eliminate the iteration of boundary conditions on the sliding interface and calculate the unsteady flow within rotor and stator simultaneously.

为了能够在较小的计算区域内不改变叶型而真实地反映出任意栅距比时的内部非定常流场，并避免近似仍采用相位后滞周期性条件，结合本文发展的网格技术，给出了一种新的实施方法，首次将动、静叶片数不等的离心式/轴流式叶轮机械转子、静子计算区域组合在一套结构化计算网格中，动/静叶排间的滑移界面完全按内场处理，避免了每一时层内，滑移界面处边界条件的迭代计算；并保证了每一时层，滑移界面处流动参数的守恒特性。

Since the interface is treated as an internal flow field so it can accurately keep the conservation of flow variables on the sliding interface. Both laminar and turbulent unsteady rotor/stator interaction of a turbine stage with arbitrary pitch ratio are calculated successfully.

成功地计算了小雷诺数工况下具有任意栅距比的轴流动/静相干叶排内部非定常层流流动，及采用标准K-ε两方程模型对较大雷诺数工况下动/静相干轴流叶排内部非定常紊流流动进行了数值分析。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。