文中提到了对这种瓣型的定常流和脉动流试验。
Results of steady flow and pulsed flow tests are shown as well as the experimental apparatus used.
本文旨在用三维非定常流模型计算气缸内的空气流动。
In this paper, 3-dimensional unsteady flow model for calculating gas flow in cylinder is introduced.
对扑翼的非定常流场，传统的定常涡格法已不再适用。
For the strongly unsteady characteristic of the flow field of flapping-wing, the traditional vortex lattice method is not more effective.
计算结果表明，振荡叶栅非定常流场的压力响应在叶栅前缘较大。
The results show that the unsteady pressure response is large in the oscillating cascade leading edge.
本文提出了用小扰动欧拉振幅方程求解振动叶栅非定常流场的方法。
In this paper, the Euler amplitude equation is developed to obtain the unsteady flow field in vibrating cascades.
本文采用数值方法对叶轮机基元非定常流和排间匹配进行深入研究。
Numerical studies about cascade unsteady flow and the edge-matching technique are presented in this paper.
要提高用时间相关法求解定常流场的收敛速度，就必须加大CFL数。
To enhance the speed of convergence in solving a steady flow field when a time marching method is used, it is essential to enlarge the CFL number.
通过数值模拟，对一个低压压气机转子的非定常流场进行结构分析和频谱分析。
Based on the numerical simulation method, frequency spectrum analysis and structure analysis were conducted for the three dimensional unsteady flow inside the compressor rotor.
对向定常流区推进的单向波问题给出了解的一级近似和二级近似的普遍表示式；
Venant's differential equations. The general analytical solutions of 1st and 2nd approximations have been given for one directional wave flow which propagates into the steady flow region.
最后，非定常流的结果进一步表明，逆流喷管是一种较高效率的射流式矢量喷管。
Lastly, the results of unsteady flow point out, counterflow thrust vectoring nozzle is a efficiency fluidic vectoring nozzle.
准确数值模拟机翼动态失速时非定常流场主要有湍流模型和数值算法两方面的难点。
The numerical simulation of the unsteady flow field around an oscillating airfoil is difficult because of the complexity of turbulence models and numerical methods.
采用定常流和非定常流计算方法研究了各种动静叶稠度组合对轴流压缩机性能的影响。
In this paper, the effects of solidity of rotor-stator cascades on axial-flow compressor performance are investigated with steady and unsteady flow calculation.
文中给出了VKI透平叶栅内的定常流结果和1.5级透平叶栅内的非定常数值结果。
Numerical results of steady flow in the VKI gas turbine cascade and unsteady flow in a 1.5 stage steam turbine are presented.
利用非定常流函数涡量方程数值模拟圆柱突然起动尾流涡旋的形成及周期性脱落过程。
The unsteady equations of stream and vorticity functions were used for numerical simulation on the process of the vortex formation and periodic shedding from an impulsively started circular cylinder.
从非定常流场计算出发系统的研究了嗡鸣发生的机理以及扰流片对嗡鸣起抑制作用的机理；
Through solving the unsteady flow fields of an airfoil-flap, the mechanism of buzz is intensively studied.
用有限时间热力学的方法分析具有热阻、热漏、内不可逆性的定常流联合卡诺型热机循环。
This paper analyzed and optimized the power output, efficiency and ecological criterion of a universal irreversible combined Carnot cycle by using finite-time thermodynamics.
本文结合高精度TVD格式的数值通量和时间进展多步法给出了一种求解定常流问题的数值方法。
A method which Combines the numerical flux of high accurate TVD scheme with multistage method in time approaching is developed to calculate the problems of 2-d steady flow.
非定常流中流速分布及湍流中欧拉空间关联函数都需要同时测量各空间点的速度作为时间的函数。
In unsteady flows it may be relevant to measure the spatial velocity distribution as a function of time.
计算并讨论非定常流场与气动声场计算结果，并分析此数值模型可以进一步完善的一些重要方面。
Numerical results of fluid and acoustic fields are reported and discussed. Some important issues for further development of the simulation model are discussed.
此外，通过对振荡叶栅非定常流场结构的研究，发现了叶片吸力面气流分离与叶片振动之间的耦合关系。
Through studying the structure of the unsteady flow field in vibrating cascades, the coupling relationship between flow separation on the suction surface and blade vibration is revealed.
对于同一叶栅进行了定常流场的计算与分析，比较了平面叶栅在不同进口马赫数、不同攻角下的定常流场。
Steady flow fields are also calculated to analyze flow field structure for the same cascade with different inlet Mach Numbers and incidence Angle.
本文基于一维非稳态多分支非定常流，建立了相应的数学模型，采用有限容积法理论对方程进行数值离散分析。
The thesis established the flow model based on one-dimensional, unsteady, compressible, Navier-Stokes equations, and discrete the governing equations using a finite-volume formulation.
我们利用计算流体动力学的方法，分析了定常流与脉动流两种条件下，支架植入引起的血管壁面剪应力的变化。
We used computational fluid dynamics(CFD) to investigate the steady and pulsatile flows in the vicinity of model stents and focused on the changes of wall shear stress caused by the implanted stents.
采用参数多项式方法和振荡流体力学理论，求解静子叶片后的尾流场及尾流场作用下转子叶片通道内的非定常流场。
The wake flow of stator vanes and the unsteady flow in the passage of rotor blades were solved by using oscillating fluid mechanics theory and parametric polynomial method.
对尾迹干扰下的转子非定常流场进行数值模拟，与传统设计定常流动假设下均匀进气的流场对比分析了尾迹干扰的影响。
Unsteady flow in the rotor is simulated and contrast between the flow field with wake flow at the inlet and that with uniform one is presented.
为了适应非定常流场对网格品质要求较高的特点，网格生成采用了基于几何外形、模型表面曲率为基础的自适应生成及加密方法。
The unsteady flow request a higher quality in grid so in this article the Cartesian grid is generated based on geometric and the body curvature.
本文采用数值方法模拟了一个三孔探头周围与测压孔内的二维可压缩非定常流场，研究了动态效应对探头绕流和测孔压力的影响，以及相应的测量误差。
The 2D unsteady flow fields around a 3-hole probe head and in its pressureholes have been numerically simulated in order to investigate the dynamic effects on the probe measurement errors.
在很长的一段时间内，人们对上述流态的了解仅限于定常的或时间平均的流态。
However only steady and mean flow state have been studied for a long period of time.
下游静叶干涉增加了动叶顶部间隙流的非定常波动强度和泄漏损失。
Downstream rotor-stator interaction increases the unsteady fluctuating intensities of the rotor tip clearance flow and the tip leakage loss.
下游静叶干涉增加了动叶顶部间隙流的非定常波动强度和泄漏损失。
Downstream rotor-stator interaction increases the unsteady fluctuating intensities of the rotor tip clearance flow and the tip leakage loss.
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