针对三峡—枝城河道的地形特征，建立一维不稳定流模型。
A one-dimensional unsteady flow model is established based on the topography of the river course between the Three Gorges and Zhicheng.
除了不稳定流动区域，计算结果与流场显示结果符合良好。
The results are in good agreement with those of the water tunnel flow visualization results, except the periodic and unstable flow.
应用叠加原理建立了变流压条件下不稳定流量响应的数学模型。
Applying the superposition principle, the transient rate's mathematics model under the variable flowing pressure condition has been introduced.
采用离散旋涡法对振荡叶栅传播失速不稳定流场进行了数值模拟。
The unsteady flow in an oscillating cascade with propagating stall was simulated numerically with discrete vortex method.
用一维不稳定流数学模型模拟枯水期水口电站下游日调节不稳定流。
The one dimensional model is employed to simulate the daily regulating unsteady flows below Shuikou reservoir.
模型比尺和模型中各项水力要素的比例是根据不稳定流模型相似条件选定的。
The model scale and the ratio of prototype to model for various hydraulic elements are selected in the light of theory of unsteady flow similarity for hydraulic models.
在十字流膜滤的基础上采用不稳定流动方式，则压力驱动的膜过滤过程将得到强化。
The performance of pressure driven membrane processes may be significantly improved when unsteady fluid instabilities are superimposed on crossflow.
以河北国华定曲发电厂为例，深入研究了二维不稳定流洪水模型在平原电厂设计洪水中的应用。
The paper researches intensively the flood model of two dimensions not steadying flow being used on the design flood of power plant in plain taking Guohua Dingqu power plant of Hebei for example.
由实验与图像处理结果获得了“S”特性区的真实流态，讨论了“S”特性区不稳定流动的原因。
The flow patterns are analyzed according to the receorded video pictures. The unstable flow in S-shape characteristic region is discussed.
本文证实李家峡水电站左底孔不存在阵发性不稳定流态问题，模型上的这种不良流态是模拟条件引起的。
This paper proves that there is no instable flow in the bottom outlet works in Lijiaxia Hydroelectric station and the instable flow in the several models is caused by the modeling condition.
但是正如那些被测试者所强调的，当收入不仅仅是低，而且不稳定也不可预测时，控制现金流更为至关重要。
But as many of the subjects emphasised, controlling the flow of cash becomes all the more critical when income is not just low, but also unpredictable and irregular.
最后对一根模型排气管进行了不稳定的流场计算。
The calculation results of unsteady flow in an exhaust manifold model are presented.
避免Internet通信流拥挤：由于Internet通信流不稳定，起源服务器与Akamai边缘服务器之间的直接路由可能很拥挤。
Avoiding Internet traffic congestion: the direct route between the origin server and the Akamai edger servers may be congested because of Internet traffic.
为了研究离心不稳定对线性增长率的影响，本研究中基本流的周向速度可以是离心稳定的，也可以是离心不稳定的。
To investigate the roles of centrifugal instability on the linear growth rate of the flows, the azimuthal velocity of the basic flow is either centrifugally stable or unstable.
为探索旋流燃烧器内热声不稳定的产生机理，搭建了可调型旋流燃烧器热声不稳定试验台架。
In order to probe into the excitation mechanism of thermoacoustic instability in swirl combustors, an experimental setup has been built including an adjustable swirl combustor.
另外在加速器物理实验以及在研究各种束流不稳定性的机器研究过程中，都需要频谱测量和频谱分析。
In addition, it required to measure and analyze the beam spectrum while the experiments of accelerator physics and study on the beam instability are made.
讨论和分析了流道间隙、加热功率和入口过冷度对沸腾起始点、沸腾流态、换热系数、流动不稳定性和临界热负荷的影响。
The effects of gap size, heat flux and inlet subcooling on the boiling incipience, flow pattern, heat transfer coefficient, flow instability and critical heat flux were analyzed and discussed.
根据分相模型运用系统控制的方法导出了描述两相流不稳定性的动态系统特征方程序。
By means of separated model and appling system control theory, dynamic system characteristic equations of describing two-phase flow instability are derived.
使用集总参数非线型模型来分析蒸发管中汽液两相流压力降型脉动，结果表明：压力降型不稳定性可以用二阶常微分方程来描述。
The pressure drop pulsation is analyzed by using a lumped parameter nonlinear model. The results show that the pressure drop type instability can be described by a second-order differential equation.
将笔者以前关于近磁尾赤道面附近的漂移气球模不稳定性工作推广到非赤道区和存在非定常地向流的情形。
Previous work on drift ballooning instability in the equatorial region has been extended to include a decelerated non stationary flow and to consider the off equator regions.
因此，探索用科学计算可视化的手段，观察和研究这类复杂流场中的不稳定结构就具有重要和现实的意义。
Therefore, developing scientific visualization methods for observing and studying unsteady structures in these complex flow fields has a significant and practical meaning.
结果表明：在激波诱导的高超音速湍流分离流中，激波结构是不稳定的，产生一个间歇区域。
The results show that the shock wave structure is unsteady in shock induced hypersonic turbulent separated flows, generating an intermittent region.
该方法使得在稳定工况下判别两相流系统的不稳定边界和稳定裕度成为可能。
Application of this method would make it POssible to identify instability boundary of two - phase flow under stable operation conditions of two - phase flow system.
在电子储存环中，由于被束流势阱俘获的离子会引起束流不稳定性。
The ions trapped by beam potential well can cause beam instability in electron storage rings.
在自然循环水回路上进行了两相流密度波不稳定性的实验研究，得到了不同工况下的实时脉动曲线。
This paper describes the experimental study of two phase density wave oscillation in natural circulation loop. The oscillation curves under different conditions are obtained.
在机器研究过程中观察到束流集体不稳定性可以被八极磁场产生的朗道阻尼很好地抑制。
It was observed in machine study that, Landau damping caused by the octupole field can suppress the beam collective instabilities.
束腔相互作用导致的束流崩溃不稳定性(BBU)将严重地恶化束品质，而加速腔横向阻抗反映了这种相互作用的强弱。
Beam breakup (BBU) instabilities resulted from interaction of beam and cavity will deteriorate beam quality. Transverse impedances reflect the degree of such interaction.
本文提出了描述两相流不稳定性的线性分相模型。
This paper present liner separated model describing two-phase flow instability.
我们发现对轴对称扰动稳定的吸积流外激波对非轴对称扰动却是不稳定的。
We find that the outer shock solution, which was previously found to be stable with respect to axisymmetric perturbations, is, however, generally unstable to non-axisymmetric ones.
我们发现对轴对称扰动稳定的吸积流外激波对非轴对称扰动却是不稳定的。
We find that the outer shock solution, which was previously found to be stable with respect to axisymmetric perturbations, is, however, generally unstable to non-axisymmetric ones.
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