transient flow

In this article, the KNG-k-ε turbulent model is used which can make good result on transient flow and bend flow.

RNG模型相比于标准k-ε模型对瞬变流和流线弯曲的影响能作出更好的反应。

Finite Element Simulation of Transient Flow in a Planar Sudden Expansion Channel

平面突扩管瞬态流动的有限元模拟

The simple infiltration method provides a transient warier flow approach to estimate the soil water characteristic curve instead of the usual equilibrium method.

简单入渗法提供了利用瞬态水流方法来确定土壤水分特征曲线而替代通常的平衡法。

Lattice Boltzmann Equation for Transient Flow of Long-distance Water Supply Pipeline

玻尔兹曼网格方程在长输管道瞬变流中的应用

Analysis of Transient Flow of Perforated Well with Boundary Element Algorithm

用边界元方法分析射孔完井非稳定渗流问题

On analysis of traditional traffic flow model, the transient maximum traffic density in a link is mined, and through the simulation experiment, the relationship among velocity, density, speed vs. density and traffic flow wave phenomenon were studied on the overflow condition sections.

在分析路段瞬态最大交通密度的基础上，挖掘传统模型中的交通溢流区域，并通过仿真实验的手段，探讨了溢流情况下路段的速度、密度、速度-密度关系以及交通流波动现象。

Based on the kinematic equation describing transient flow in a river, a numerical calculation method is developed to simulate the propagating process of the transient flood wave and dam-break wave in a natural river and on dry river beds.

以描述河流瞬变流的运动方程为基础，得出了模拟瞬时洪水波和溃坝波在天然河道和干河床中传播过程的数值计算方法。

Study on Time Step of Transient Flow Computation in Piping System

有压管道系统瞬变流计算的时间步长取值方法研究

By the air flow disturbance compensation control for high-altitude missile engine to start testing, aero-engine high-altitude thrust transient test, by the input disturbance compensation is mainly applied to the core engine test.

其中按空气流量扰动补偿控制适用于弹用发动机高空起动、航空发动机高空推力瞬变试验，按输入补偿控制主要适用于核心机试验。

Rigid model for transient flow in pressurized pipe system containing trapped air mass

水流冲击管道内滞留气团的刚性数学模型

Improvement of power system transient stability using unified power flow controller

基于统一潮流控制器对电力系统暂态稳定控制的研究

The Calculation of the Two Phase Transient Flow in the Circulating Water System of a Power Plant

循环水系统两相瞬变流计算

A mathematical model for simulation of transient flow in tailrace tunnel transformed from diversion tunnel

导流洞改作发电尾水洞过渡过程中明满流的数学模型

Under the assumption that the permeability varies with the piecewise experimental law of the pressure drop, the equation for steady radial flow and the non-linear equation for transient flow through porous media were derived and solved.

本文基于渗透率随压力呈分段的指数变化规律，建立并求解了平面径向稳定渗流方程和非线性不稳定渗流方程。

Numerical Simulation of Transient Flow in Pipe Networks due to Pump Failure

管网中泵破坏瞬变流的数值模拟

Based on this, the differences between the transient flow field and the time-averaged flow field and the characteristics of the vortex structures are analyzed.

在此基础上，分析了瞬时流场和时均化后的流场差别及旋涡结构特点；

Based on the radial transient flow equation and the superposition principle, a corrected formula for calculating the unstabilized and stabilized binomial equation is obtained by analyzing the whole procedure of the modified isochronal test.

根据气井早期不稳定渗流理论和渗流叠加原理，对修正等时试井的全过程进行理论分析，推导出确定不稳定及稳定二项式产能方程的校正公式。

Test Research of Transient Flow Behavior Controlling and Resistance Reduction in Mine Pump System

矿井排水可控止回阀系统及降阻的试验研究

Conclusion: There was a transient physiological alteration of the cerebral blood flow index of normal newborns following the different delivery mode, but there was no significant difference in the asphyxiant newborns.

结论：分娩方式对正常新生儿脑动脉血流指数有短暂的生理性差别，但对窒息新生儿脑动脉血流指数无影响。

Numerical analysis of flow structure for transient flow through a spool valve

液流通过滑阀的流场结构的数值解析

Based on impulse response, the solving method of transient flow in frequency domain is described.

基于脉冲响应, 描述瞬变流在频域中求解的方法.

By contrast, in liquid transients, pressures and flow pattern undergo smooth and transient effects are small.

与气量突变相比, 液量突变引起的压力和流型变化较平缓,瞬态效应小.

In steady and transient state, air temperature field and flow field inside the thermoelectric refrigerator, loaded and no loaded, are calculated by using a CFD software PHEONICS.

采用PHEONICS数值仿真软件，对热电冰箱的无负载瞬态工作、有负载稳态和瞬态工作时箱内温度场和流场进行了数值模拟。

Simulation of 3D Transient Flow Characteristic of Disk-Shaped Turbo-Molecular Pump

盘型分子泵3D过渡流特性

Analysis of transient flow force in a new direct drive servo valve

新型直接驱动伺服阀的瞬态液动力分析

Nonlinear Analysis of Transient Flow in Pipe

管道内瞬变流动的非线性分析