流型

用差压信号空间特征频率Sr鉴别两相流流型

Identification of two-phase flow pattern by using specific spatial frequency of differential pressure signal

CVD工艺中气体流型的研究

The study of gas flow pattern in CVD technology

DNA编码和混沌神经网络的两相流型辨识

Identification on the two-phased flow-type of DNA coding and chaos neural network

基于改进型BP网络的气液两相流流型识别

Flow Patterns Identification of Air-water Two-phase Based on Improved BP Neural Network

研究了气液并流向上填充床的流体力学特性，如：流型、压降、以C／Co及Per表示的液相径向混合情况。

The gas-liquid co-current up-flow regime , pressure drop , and liquid radial dispersion in a packed bed was studied .

LDPE熔体在挤出口模流动时入口区流型的观测

Observation of flow pattern of LDPE melt in entry region during die extrusion

论文主要讨论了一种高压、350mA、低压差线性恒流型高亮度LED驱动芯片的研究与设计。

In this thesis , the research and design of a high voltage , 350 mA , LDO linear current regulative HB LED driver is demonstrated .

为进一步提高Web的检索性能，提出了一种基于微分流型的Web检索算法。

To further improve the retrieval performance of Web retrieval , an algorithm of Web retrieval based on differential manifold was proposed . The essential idea of the algorithm is as follows .

研究结果表明，基于DNA编码遗传技术对BP神经网络进行优化处理而形成的气液两相流型辨识模型比已有其它辨识模型具有更高的辨识能力；

The results show that the identification method , in which the BP neural network is optimized by genetic method with DNA coding , is more powerful .

并以此特征向量作流型样本对RBF神经网络进行训练，实现流型的智能化识别。

The RBF neural network is trained using those eigenvectors as flow regime samples and the flow regime intelligent identification is realized .

液钠沸腾两相流流型与临界热流密度（CHF）机理实验研究

Experimental Study on Two phase Flow Pattern and Critical Heat Flux ( CHF ) Mechanism of Liquid Sodium Boiling

基于电导波动信号的EMD分解和RBF神经网络的气液两相流流型识别方法

A Method for Identifying Gas-liquid Two Phase Flow Regimes Based on EMD Decomposition Using Conductance Fluctuation Signals and RBF Neural Network

采用Hurst分析描述了管内气液两相流不同流型的压差波动特征，发现压差波动信号中存在着不同程度的周期成分。

The result showed the periodic component was found in the differential pressure fluctuation signal .

卧式釜功耗变化规律取决于流型，在低Fr数区，实验结果与受力分析得到的结果具有较好的一致性；

In the region of lower Froud number , the experimental results were in good agreement with predications .

基于希尔伯特&黄变换与Elman神经网络的气液两相流流型识别方法

Applied Study of Hilbert-huang Transform and Elman Neural Network on Flow Regime Identification for Gas-liquid Two-phase Flow

结果表明：Kolmogorov熵是油水两相流流型的敏感指示器。

The result indicates Kolmogorov entropy is a sensitive indicator of oil-water two phase flow pattern .

BP神经网络以这些能量特征量为输入对油气两相流不同流型（包括泡状流、塞状流、层状流、弹状流和环状流）进行分类。

With these energy features as inputs , five flow patterns such as bubble flow , plug flow , stratified flow , slug flow and annular flow are identified using BP neural network .

本文提出了EMD与Elman神经网络相结合的气液两相流流型识别的新方法。

In this article a flow regime identification method using the EMD combined with Elman neural network was put forward .

文中导得了N层模式的KdV方程，作为例子计算了三层模式的孤立Rossby波流型。

The KdV equation is derived from a N-level model . The streamline patterns of solitary Rossby waves are calculated with a three-level model .

电阻层析成像（ERT）技术在识别两相流流型中的应用

The Application of Electric Resistance Tomography ( ERT ) in Identification of Flow Regime of Two Phase Flow

分析对比现有的流型辨识方法，提出基于原始数据特征提取的竞争神经网络和BP网络流型辨识法。

Some methods of flow pattern identification is synthesised , and it brings forward compete neural network and BP neural network based on distinguishable feature extracted straight from the capacitance measurements to distinguish flow pattern .

该钻井液体系是一种无环境污染的油基泥浆替代体系，主要由MEG、流型调节剂、降滤失剂、pH值调节剂等组成。

MEG drilling fluid is a new environment-friendly alternate system for oil-based drilling fluids , which consists of MEG , flow pattern correctives , fluid loss additives and pH-correctives mostly etc.

遗传Marquardt神经网络识别油气水多相流流型研究

Study on Intelligent Identification of Flow Regime of Oil-Gas-Water Multiphase Flow by Genetic-Marquardt Algorithm

基于Xiao等人的流型判别法，将流型分为分层流、段塞流、环状流和分散泡状流等4种流型。

In this paper , basing on Xiao flow pattern recognition methods , four flow pattern such as stratified flow , slug flow , annular flow and dispersed bubble flow are divided .

滞留现象的另一个度量是Bankoff在气-液流动的泡状流型中所采用的因数K。

Another measure of holdup is the k factor used by Bankoff in connection with the bubble flow pattern in gas-liquid flow .

先对平流型气浮池进行结构简化，用GAMBIT软件进行建模，之后用FLUENT对不同的气浮池模型进行了研究。

First , simplify the structure of the advection-type flotation tank , using GAMBIT software modeling , then using FLUENT software simulate for the flotation tank model .

PNA流型的年际变化及温、热带太平洋海温的作用

The abrupt change of the coupled pattern in the middle 1970s . Interannual Variation of the PNA Flow Pattern and Impacts of Extratropical and Tropical SSTs

根据流面倾斜的三维轴流式风机内部流动控制模型进行了流型优化分析，提出了以K值为控制变量的最佳控制旋涡与流型的计算方法。

Based on the internal flow control equations for axial flow fans with an arbitrary inclined flow surface , an optimization analysis of the flow distribution and calculation method of the optimum control vortex with value K as a control variable is presented .

搅混流（churnflow）是气液两相通过竖直或倾斜管时，弹状流中的大气泡破裂形成的一个不稳定流态，是弹状流与环状流之间的重要过渡流型。

Churn flow is an instable flow pattern appeared when the bubbles explode in slug flow . As an important flow pattern happens in the transition between slug flow and annular flow , churn flow mainly appeared in vertical and inclined tubes .

通过提取压差波动信号的概率密度函数（PDF）分布特征，找到了各种流型的特征，可以作为流型识别的一种方法。

By abstracting probability density function ( PDF ) of the differential pressure fluctuation signal , we can obtain features of different flow pattern in horizontal pipe and use these features to differentiate flow pattern .