unsteady flow是什么意思

网络释义

用法例句

Through computation on runoff regulation incorporated with flood control and water benefit promoting,computation on power balance of Guangxi power grid,analyzing of cost of power system,as well as calculation of downstream unstable flow, 540 MW is selected to be installed in the station.

百色水利枢纽是一座以防洪为主，兼有发电、灌溉、航运、供水等综合效益的工程，通过兴利与防洪结合的径流调节计算，广西电网的电力电量平衡计算，电力系统现值费用计算，以及电站下游不稳定流计算，最后选定电站的装机容量为５４０ＭＷ。

This paper discusses the theoretical solution to the transient flow of the urban high-pressure gas pipeline network with the numerical method of partial differential equations and the Newtonian methods,using Visual C++ to have a program of the pressure distributing with the change of consumer charge in the high-pressure gas pipeline network.

采用偏微分方程特征线的数值分析及解非线性方程牛顿迭代法,对燃气高压管网不稳定流动问题从理论上进行了求解,并用Visual C++编制了用户负荷随时间变化时高压管网压力分布的动态模拟程序。

This paper discusses the calculation method of transient flow with constant temperature for high-pressure gas pipeline based on characteristic line, considering friction term, inertia term and gravity term.

对高压燃气管道考虑了摩擦项、惯性项、重力项的等温不稳定流动,用特征线法的计算方法进行了探讨。

Analytic solution of transient flow in gas transmission pipeline are obtained by separation variable method, and distribution function of pressure and flow in gas transmission pipeline are defined.

用分离变量法求出了燃气长输管道不稳定流的解析解,得出了长输管线压力、流量的分布函数。

Study on Short-term Optimal Scheduling and the Influence of Unsteady Flow on Navigation of Three Gorges Cascade;

三峡梯级短期优化调度与航运的不稳定流研究

The discharge calculation coefficient k,x can be used to the discharge calculation under the condition of fixed numerical value,solves some special demands in water power planning and design and similar calculation of unsteady flow in the pondage water power station.

马斯京根法流量演进系数K,x,在数值不变的条件下应用于河段短时段的流量演算,解决了水利水电工程规划设计中的一些特殊要求和水电站日调节不稳定流演进的近似计算问题。

Thus,some special demands in water conservancy and hydroelectric design as well as the approximate calculation problems of unsteady flow for daily-regulation hydropower station are resolved.

按长时段推求的马斯京根法流量演进系数K,X,在数值不变的条件下应用于河段短时段的流量演算,解决了水利水电工程规划设计中的一些特殊要求和水电站日调节不稳定流演进的近似计算问题。

Based on solution to vertical crack model of infinite flow present by Gringartens and by classifying micro-sections for produced cracks and integrating with vertical crack model of uniform flow rate, half analytic solution to unstable flow pressure at bore bottom for 200 numbers of micro-sections of cracks is derived.

在Gringarten等人提出无限导流垂直裂缝模型解的基础上,通过对产生的裂缝进行微元段划分,结合均匀流率垂直裂缝模型,得出了裂缝微元段数为200时的井底不稳定流动压力的半解析解,根据杜哈美原理和二项式计算产能的方法,结合气井生产,提出拟合井底压力的方法,得到一种专门针对无限导流垂直裂缝模型的多产量测试产能预测模型。

The relation between the stress concentration in flow field and instability in flowability of the resin melt was analyzed for the sake of controlling the phenomenon of the unstable flow.

用双毛细管流变仪研究了线型低密度聚乙烯、低密度聚乙烯及其共混物在较宽速率范围内的流变行为,通过分析流场中应力集中效应与不稳定流动的关系,从而控制不稳定流动现象。

Summarization is put forward about the phenomenon of typical unstable flows of polymer melt in capillary.

概述了聚合物熔体在毛细管挤出中典型的不稳定流动现象和不稳定流动的分类,分别叙述了支化聚乙烯型熔体破裂和线型聚乙烯型鲨鱼皮破裂、粘-滑破裂、波动破裂,以及其它异常流动行为的理论研究进展,并讨论了口模尺寸、温度、添加剂、分子量及分子量分布等因素对不稳定流动的影响。

Lattice -Gas Simulation of Kelvin -Hemholtz Unsteady Flow

Kelvin－Hemholtz不稳定流动的格子气仿真

ion-ion streaming instability

离子－离子流不稳定性

electrical transient

瞬时产生的不稳定电流

modified two stream instability

变形的双流不稳定性

electrohydrodynamics instability

电流体动力学不稳定性

To let flow or fall in drops or an unsteady stream.

使滴下或不稳定地流

equation for steady incompressible flow

不可压的稳定流动方程;不可压式稳定流动方程

violent or uneven movement of air or water

猛烈的或不稳定的气流或水流

In steady flow, mass flux is constant.

在稳定流动中，质量通量是恒定不变的。

Research on Uncertainty and Flow Stability of Water Flow Standard Facility

水流量标准装置不确定度和流量稳定性研究

DETERMINATION OF PARAMETERS FOR UNEQUAL-RATE UNSTEADY FLOW DOUBLE-EXTRACTION WELL PUMPING TEST

不等流量双井非稳定流抽水试验参数的确定

cross field current driven instability

横向电流驱动的不稳定性

anisotropic plasma jet instability

各向异性等离子喷流不稳定性

unstable flow of a liquid or gas.

液体或气体的不稳定的流动。

We expect to pass through some slight turbulence

我们预计将经过一段轻微不稳定气流，

Gross flow instabilities are damped and remain small.

总体流动的不稳定性受到阻抑并且很

The Effect of the Instability of Alongshore Current on Substance Transport;

沿岸流不稳定运动对物质输移的影响

Kelvin-Helmholtz instability in compressible fluids

二维可压缩流体Kelvin-Helmholtz不稳定性