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static flow相关的网络例句

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与 static flow 相关的网络例句 [注:此内容来源于网络,仅供参考]

Leakage in the initial observation to determine the basis of the leakage site, and then manually set car observation, if the leakage were no significant changes in static and dynamic sealing ring problem; such as the disk when there are significant changes in leakage can be concluded that the dynamic , static friction ring problems; such as leakage of medium along the jet axis, w你好le moving most of Central ring problems, leakage to the surrounding medium or from the water spray cooling holes in the leakage, the seal ring for static failure.

杂质泵安装静试时泄漏机械弥缝安装调试好后,一般要进行静试,察看泄漏量如泄漏量较小,多为动环或静环弥缝圈存在问题;泄漏量较大时,则表白动、静环磨擦副间存在问题在开端察看泄漏量、判断泄漏部位的根蒂根基上,再手动盘车察看,若泄漏量无明显变化则静、动环弥缝圈有问题;如盘车时泄漏量有明显变化则可下定论是动、静环磨擦副存在问题;如泄漏介质沿轴向喷洒,则动环弥缝圈存在问题居多,泄漏介质向四周喷洒或从水冷却孔中漏出,则多为静环弥缝圈失效此外,泄漏通道也可同时存在,但一般有主次区分,只要察看细致,认识结构,一定能正确判断

In engineering application, we think that the rock laboratory experiments may simulate and reshow rock bursts considering the conditions of coupled static-dynamic loads and rock burst and their comparison. Energy demand of rock burst occurring is revealed through analyzing energy transition of rock failure process under coupled static-dynamic loads. At the same time, the rule of energy utilization under coupled static-dynamic loads is discovered; the measures for rock cracking by utilizing high stress condition in deep rock mass and energy utilization improving are found.

在工程应用方面,将动静组合载荷下岩石受力条件和岩石发生岩爆的条件及两者发生的现象进行了对比,认为室内动静组合加载试验可以模拟再现现场发生的岩爆,并通过分析动静组合载荷下岩石破坏过程中能量的转化来揭示岩石发生岩爆的能量要求,而且发现了动静组合加载能量利用的规律,找到提高能量利用率的措施和利用深部岩体受力状况来致裂岩石的手段。

This paper aims at the characteristics of conceptual twophase resistance of debris flow. It uses the conceptual twophase resistance for a static analysis on accumulation state of debris flow. As a result,a formula for accumulation state of debris flow in general condition is presented.

针对泥石流的结构两相阻力特征,采用结构两相阻力对泥石流的堆积形态进行了静力学分析,推导出在一般条件下泥石流堆积形态的公式,并讨论了在不同条件下泥石流堆积形态的特点。

Considering a spherical porous carbon particle immersed in a static ambient atmosphere, the combustion characteristics under three basic conditions: frozen flow, equilibrium flow, partial flow are solved in a half-analytical and half-numerical way. By using the LAEA (Large Activation Energy Asymptotic Method), the departure value of some parameters such as combustion rate, temperature, and concentration are obtained. On this basis, the rules of a carbon particle combustion under various conditions when the gas phase Damk〓hler number is in the range of 0,+∞ are summarized.

建立氧化性环境中相对静止的多孔炭粒燃烧的控制方程,采用半解析、半数值方法求解出炭粒在冻结流、部分流、平衡流三种基本情况下的燃烧规律,并采用大活化能渐近匹配方法,计算出偏离冻结流、偏离平衡流情况下燃烧速率、温度及组分浓度等参数的偏离解,进而总结出炭粒在气相Damk〓hler数为0,∞整个范围内燃烧特性变化规律。

XRD and EDS analysis indicate that at static condition, the composition of the scale is CO3, while the scale changes to CO3 at dynamic conditions. The increment in flow rate increased the thickness of the scale remarkably, but had little influence on the hardness and Young's modulus of the scale. The fracture toughness of the scale exhibited the lowest value at the flow rate of 0.5 m/s whereas the adhesion strength increased with increasing the flow rate.

结果表明,静态条件下形成的腐蚀产物膜的主要成分为CO3,动态条件下的主要成分为CO3;介质的流动能够促进腐蚀产物膜的形成,但对膜的硬度以及杨氏模量影响不大;腐蚀产物膜的断裂韧性随着流速的增大先下降后上升,流动状态下内层腐蚀产物膜的致密性较好,膜与基体的结合强度较高。

Generally, it is difficult to fully descript the direction and velocity variety of flow field in a static picture, because it could only descript static information.

一般的,在一幅静止的图像中是很难充分表达流场的运动方向和速度变化的,它只能表达静止的信息,过于僵化。

Used CFD software FLUENT, the three dimensional simulation to piston windorganization at the mine transportation drift were studied. The speeds, static pressuredistribution map at various characteristics sub-plane under different condition were obtained.The entire flow field was divided to different sub-area. The speeds, static pressure changingtendency at the typical position were analyzed. Mechanics origin of the piston wind wasdiscussed.

7采用计算流体力学软件FLUENT对矿井运输巷道内活塞风的风流组织进行了三维数值模拟,得出了不同状态下各特征子平面上的速度、静压分布,并对巷道内空气流域进行了分区,分析了典型位置上的速度、静压变化趋势,探讨了活塞风形成的力学原因。

Allthe models satisfy the precision and strength requirements.6 CFD is employed to simulate the application of tube with static mixer in anindustrial furnace, in which a tube model library containing the geometricalmodel and physical model in common use is build.7 Disturbed flow in tube with static mixer is demonstrated in an experimentsystem designed and manufactured by the author. Fluid field is measured byuse of seven-hole probe method. An experimental system are designed and builtfor this purpose.

建立了一个由模型的几何、物理参数组定义的常用模型的模型库,提高计算效率,缩短放大研究周期。6、提出了基于速度的流场扰流效果的评价方法,将之应用于流场设计和扰流元件结构优化的评价中,获得了量化的评价结果。7、设计、制造流动显示实验系统,验证静态混合式炉管对流体的扰动效果:采用七孔探针流体力学实验方法,在流体力学实验测量系统中,对静态混合式炉管模拟流场的三维速度分布和流体、压力降等进行测量。

Qualitative results are obtained by using this method in fluid fielddesign and structure optimization of disturbing elements.5 Experimental models are made efficiently and accurately by RPM method. Allthe models satisfy the precision and strength requirements.6 CFD is employed to simulate the application of tube with static mixer in anindustrial furnace, in which a tube model library containing the geometricalmodel and physical model in common use is build.7 Disturbed flow in tube with static mixer is demonstrated in an experimentsystem designed and manufactured by the author. Fluid field is measured byuse of seven-hole probe method. An experimental system are designed and builtfor this purpose.

建立了一个由模型的几何、物理参数组定义的常用模型的模型库,提高计算效率,缩短放大研究周期。6、提出了基于速度的流场扰流效果的评价方法,将之应用于流场设计和扰流元件结构优化的评价中,获得了量化的评价结果。7、设计、制造流动显示实验系统,验证静态混合式炉管对流体的扰动效果:采用七孔探针流体力学实验方法,在流体力学实验测量系统中,对静态混合式炉管模拟流场的三维速度分布和流体、压力降等进行测量。

The Frechet derivative of the cost function is determined via the solution of an adjoint partial differential equation, and the boundary shape is then modified in a direction of descent. This process is repeated until an optimum solution is approached. The advantage is that the cost function variation is independent of the flow field variation, with the result that the gradient of cost function with respect to arbitrary number of design variables can be determined without the need for additional flow-field evaluations. So each design cycle requires the numerical solution of both the flow and the adjoint equations leading to a computational cost roughly equal to the cost of two flow solutions.

虽然他们的研究成果大多数都可以在公开性文献上看到,但是其中一些具体的细节问题的处理方法却没有透露,比如:伴随方程如何离散求解才能减小最终梯度计算中的误差,使得设计过程有效地进行;伴随方程与流动方程的边界条件是不同的,如何合理地处理伴随方程的边界条件,才能推动设计过程朝着设计目标而发展;在减阻问题中目标函数如何定义,求解梯度的具体数学公式如何推导,如何通过数值方法来实现它们等。

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