利用微观尺度管流模型，结合普通稠油流变特征，提出了在考虑稠油流变性条件下微观启动压力梯度计算方法。
The calculation method of microcosmic starting pressure gradient is put forward based on the model of pipe flowing and rheological behaviour of conventional heavy oil.
建立供水管网试验模型的目的是便于研究真实城市供水管网中管流的水力特性和水质情况。
The objective of developing an experimental model of the water distribution network is to study the hydraulic properties and water quality of the actual network.
考虑内部流体压力因素的影响，研究了具有非线性运动约束输流曲管的混沌运动及其抑制模型。
Taking into account the effect of internal fluid pressure, the chaotic vibration and suppression of a fluid-conveying curved pipe subjected to motion-limiting constraint were investigated.
用两相流模型对爆轰波管中的悬浮铝粉尘的爆轰波进行了研究。
Detonation in suspended aluminum dust in tubes was analyzed with two-phase flow model.
催化裂化提升管反应器数学模型基本上都是基于平推流反应器的假设建立起来的。
Mathematical models for Fluid Catalytic Cracking (FCC) riser reactors were built generally on the basis of assumption of "plug flow" pattern within risers.
本文首次验证了纵流壳程换热器选用波纹管作为换热元件采用单元流道模型对壳程进行数值模拟的正确性，同时验证了数值模拟结果的正确性。
The correctness of using periodic unit duct model to simulate the shell-side flow and heat transfer is confirmed for the first time, when using the corrugated tube.
最后用方截面管流中有关二次流的实验结果对模型进行鉴定。 结果表明，给出的模型在槽道流动和方截面管流中都获得了满意的结果。
Then the normal Reynolds stresses in square duct flow are calculated using the new model and coefficient functions, the results are consistent with the experimental data.
对无芯棒缩管提出了流函数的数学模型，应用上限原理加以推导和数值运算。
The paper forword a mathematical model of stream function for sinkings with no internal mandrel and applies the upper bound approach principle to make further deduction and calculation.
使用集总参数非线型模型来分析蒸发管中汽液两相流压力降型脉动，结果表明：压力降型不稳定性可以用二阶常微分方程来描述。
The pressure drop pulsation is analyzed by using a lumped parameter nonlinear model. The results show that the pressure drop type instability can be described by a second-order differential equation.
应用该模型可以确定小管出流环沟灌溉的技术参数。
It can be used to determine the technical parameters of circular furrow irrigation with small tubes.
在建立了MOS场效应管小信号模型的基础上，采用信号流图的方法设计了一个三输入一输出的二阶通用有源电流模式滤波器。
By signal flow graph, a new universal active current mode second-order filter was designed basis on establishing MOS transistor small-signal model. The filter is of three-input and one-output.
此外，由于螺旋式管机头流道的复杂性以及畸形性，用通常方法很难建立起该流道的有限元模型。
In addition, since the geometry of the flow channel in a spiral mandrel die is quite complex, it is difficult to create the FEM model of the flow channel by those ordinary ways.
在传统液固两相流的研究成果基础上，建立起二元冰在水平管内换热的数学模型，同时针对二元冰在风机盘管中的输送情况，分析了输送速度、含冰率对于二元冰换热的影响；
Analyzed all kinds of effects on the pressure drop. Finally, draw the mathematical model of pressure drop4. Analyzed the effects of flow and ice packing fraction on pressure drop of fan and coil5.
在传统液固两相流的研究成果基础上，建立起二元冰在水平管内换热的数学模型，同时针对二元冰在风机盘管中的输送情况，分析了输送速度、含冰率对于二元冰换热的影响；
Analyzed all kinds of effects on the pressure drop. Finally, draw the mathematical model of pressure drop4. Analyzed the effects of flow and ice packing fraction on pressure drop of fan and coil5.
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