不稳定流动

结果表明，UHMWPS最显著的流变特征为超高的熔体粘度和低剪切速率下出现不稳定流动。

It was found that the rheological behavior of UHMWPS is remarkably characterized by its unstable flow at low critical shear rate and ultrahigh melt viscosity .

采用非等熵不稳定流动理论对390Q柴油机的进排气系统进行了计算，介绍了系统边界条件的处理、系统的简化以及参数的确定。

Calculation using non-isentropic unstable flow theory has been made for the intake and exhaust system of 390Q diesel engine . The treatment of the system boundary conditions , system simplification and data defination are discussed .

垂直U形管内汽液两相不稳定流动及传热的实验研究

An experimental study of two-phase flow instability and heat transfer in a vertical U-tube evaporator

不稳定流动将导致CHF降低。

Instable flow will cause a significant decrease in CHF values .

熔体破裂（MF）是挤出成型的一种不稳定流动。

Melt fracture ( MF ) is a kind of instable flow in extrusion .

周期压力梯度作用下管内上随体Maxwell流体不稳定流动的解析法

A Variational Analytical Approach to Unsteady Flow of Upper Convected Maxwell Fluid in Tube Under Cyclical Pressure

采用了克兰克尼科尔森（CrankNicolson）格式对天然气长输管道不稳定流动的数学模型进行了数值求解。

This paper uses Crank-Nicolson mode to resolve the transient flow in long natural gas pipelines .

RSI现象的不稳定流动模拟

Phenomenon Rotator-stator interaction induced unsteady-flow simulation

综合分析认为，PP-R熔体挤出过程中的流动应力集中效应和扰动源主要发生在口模入口区；熔体/管壁间的界面作用对熔体的不稳定流动性也有一定影响，但影响不大。

It is concluded that the head stream of the instable flow and flow stress concentration effect during the melt extrusion process mainly occurred at the die inlet .

毛细管中聚合物熔体不稳定流动的研究进展

Advance in the research of polymer melt unstable flows in capillary

用不稳定流动研究6102汽油机排气管的设计

Investigation on 6102 Gasoline Engine Exhaust Manifold with Unsteady Flow Theory

天然气在管道内的不稳定流动分析

An Analysis of the Unstable Flow of Natural Gas in Pipeline

水平直管内制冷剂蒸发不稳定流动试验研究

Research on Instable Flow of Refrigerant Evaporation in Horizontal Straight Tube

高聚物熔体挤出不稳定流动的研究进展

Research Progress of Flow Instabilities in the Extrusion of Polymer Melts

研究中采用了特征线差分法求解该不稳定流动问题。

Finite differential solution of characteristic method is used for it .

压出过程中混炼胶熔体不稳定流动的研究

Research on the instable flow of rubber compounds melts in extrusion

排气消声器不稳定流动边界条件的研究

A Study on Unsteady Flow Boundary Condition of Exhaust Mufflers

柴油机两级涡轮增压系统不稳定流动模拟计算的研究

Simulation Calculation to Unsteady Flow of Two-class Turbocharged Systems in Diesel Engines

管道不稳定流动经一很短时间，便可达到稳定；

Little time was used for flow to get steady .

尿素生产中尿液的不稳定流动对尿素一分塔的影响

Impact of Unstable Urea Solution on the Operation of the First Tower

离心压气机叶片扩压器的不稳定流动特征

Experimental Study of Unsteady Flow Characteristics of Vaned Diffuser in Centrifugal Compressor

LLDPE/LDPE共混熔体不稳定流动性的研究

Unstable Flow of LLDPE / LDPE Blends Melt in Extrusion

排气消声器不稳定流动模拟与实验

Unsteady Flow Simulation and Experiment of Exhaust Mufflers for Automobiles

迦辽金法在管道不稳定流动分析中的应用

Application of Galerkin Solution in Unsteady Flow of Long Distance Oil Pipeline

含气输油管道不稳定流动分析

Unsteady Flow Analysis of Oil Transmission Pipeline with Free Gas

塑料熔体挤出过程中不稳定流动的研究

Study of instable flow of plastic melt in extrusion

陕北石油秩序输油管道中不稳定流动分析

An Analysis on the Unsteady Flow in Oil Pipeline

在挤出机口模中聚合物不稳定流动的模拟

Simulation of Flow Instability of Polymer in Extrusion Die

不稳定流动中的非线性问题的处理

Non - Linear Problem of Unsteady Flow in Pipe

高压燃气管道特征线法不稳定流动计算的探讨

Discussion on Transient Flow Calculation for High-pressure Gas Pipeline Based on Characteristic Line