查询词典 unsteady

The complex unsteady flow is 3 dimensional and protean, also it is one of the most difficult problems in engineering application.

非定常三维复杂流动，如湍流、非定常分离涡，是当今流体力学的疑难问题之一，也是许多工程应用迫切需要解决的问题之一。

Comparison between numerical results and experiment shows that only unsteady simulation made good prediction of the large disturbance of pylon.

通过与实验结果的对比，验证了数值模拟所采用的模型和方法，为本文的研究工作奠定了基础。

In an unsteady quavering manner.

以不稳定的、颤抖的方式。

The unsteady problem is mathematically reduced to a partial differential equation ofsecond order.

该非定常问题归结为一个非线性二阶偏微分方程的求解问题。

In order to study the numerical method to solve the viscous incompressible flow with free surface, the 3-D mathematical model for steady and unsteady hydrodynamic problem had been established and closed by k-εbuoyant turbulence model. The algebraic coordinate transformation method was used to fit the free surface, the Runge-Kutta method of three step and second precision was devised to simulate the time step. A high precision up-winding compact scheme was studied for the convection term, and the generalized conjugate residual method was set to solve the Poisson equation.

为了研究粘性不可压缩三维问题的数值求解方法，本文从基本的Navier-Stokes方程出发，采用代数拟合方法处理自由表面，用三级二阶Runge-Kutta方法对时间步进过程进行了模拟，并且对对流项的高精度迎风格式进行了研究，给出了求解压力Poisson方程的广义共轭剩余法，从而建立了能够模拟有自由表面的粘性不可压缩问题的定常、非定常三维水动力学模型，并采用k—ε浮湍流模型对其进行封闭。

Simulation adopted the unsteady and segregated resolver,it can make results bring near with practice.

模拟采用非稳态，分离求解式，使与实际比较接近。

The methods used here are proved be correct therefore are useful for the numerical simulation in unsteady incompressible flow with dual time step and preconditioning . Simulation to the sand saltation is carried.

文中所采用的双时间法的数值求解方法、边界条件的提法、差分格式的选取经验证是成功的，为双时间法与预处理方法的结合对低马赫数流动的数值计算积累了宝贵的经验。

According to Tsao and Sargent's hypothesis, the basic model of unsteady lubrication in mixed film lubrication regime in strip rolling was presented.

根据Tsao和Sargent的混合润滑假设，建立了板带轧制时混合润滑状态下的非稳态润滑基本模型。

Based on the existing studies,the unsteady flow and sediment model of river networks is presented in this paper.

在已有研究的基础上，建立了适合复杂区域的河网非恒定流水沙数学模型。

The distribution of seismicity is inhomogenous and unsteady in space and in time respectively.

地震活动的分布具有空间不均匀性和时间非平稳性。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了