IFT

IFT based design of DC double closed - loop speed tuning system

基于迭代反馈调整的直流双闭环调速系统设计

Research on Measuring IFT by Using SITE 04 Type Tensiometer

用SITE-04型张力仪测定界面张力影响因素研究

Chemical agent loss and effective distance of ultra low IFT in ASP flooding

复合驱过程中化学剂损失与超低界面张力有效作用距离

Anisotropic Tensor Force Finite Element Method of IFT Theory for Simplified Navier-Stokes Equations

简化Navier-Stokes方程的IFT理论的各向异性张力有限元法

The influence of polymer on IFT is not obvious .

聚合物对界面张力影响不大；

Extremal fields for space transfer of IFT system

IFT系统空间过渡的极值曲线场

Report on Participation in the IFT Annual Meeting and Food Expo in 2000

参加2000年美国食品工艺学家学会年会和食品博览会的情况汇报

IFT between new crude oil / alkaline solutions obtained after extraction might decrease to ultralow .

已萃取原油后的碱渡与新原油之间的界面张力将大幅度降低，可以使其最低值和平衡值都达到超低。

IFT-TOA , the frequency domain method based on IFT ( inverse Fourier transform ), was studied .

讨论了频域TOA的逆傅立叶变换（IFT）方法，即IFT-TOA方法。

A new method of machining integral fin tubes ( IFT ), chopping extrusion technique , was presented .

提出了一种新的整体翅片管的机械加工方法，即劈切挤压加工。

Effect of Surfactant Homologue System on Oil-water IFT

表面活性剂同系物体系对原油界面张力的影响

Investigation on the Adaptability of EOR with Ultra-low IFT Flooding Technology to Permeability of Porous Media

超低界面张力驱提高采收率对渗透率的适应性研究

IFT contour diagram method ;

界面张力等值线图法；

They feel more comfortable and safe ," says Ç ift ç i. " It is also good for their families .

老人们感到更舒适和更安全，其家人也可从中受益。

Compared the 3-D IFT with smooth tube , the result shows that it has perfect heat transfer enhancement effect and good thermodynamic performance .

三维肋管的使用结果表明：它具有良好的强化传热效果和优良的热力性能。

The dynamic phase behavior study showed that the form of middle phase is a dynamic course and IFT will be stable while phase transition is steady .

相行为的动态研究表明，中间相的形成是一个动态的过程，相态稳定后界面张力也随之达到稳态值。

Introducing biopolymer xanthan into this system does not affect its IFT but enhances its viscosity only .

加入生物聚合物使该体系粘度增大，但不影响体系界面张力。

THe higher the alkaline concentration is , the more stable the dynamic IFT ( Eq ) between crude oil and alkaline water ;

碱浓度越高，原油与碱水间的平衡动界面张力越稳定；

It is difficult to get high oil recovery if only minimum dynamic IFT is ultralow ( 10-3mN / m ) .

如果仅仅动态界面张力最低值达到超低（10－3mN／m），将难以获得高的采收率。

In the great majority of cases , addition of polymer ( HPAM ) will cause an insignificant rise in the IFT .

聚合物HPAM大多数情况下都使界面张力略有升高。

As the authoritative voice of food science and technology , IFT contributes to public policy and opinion at national , state , and local levels .

所有来自于食品科学和技术方面的权威声音，食品技术专家协会都会在国内各州，地方公布于公众。

Dynamic IFT is chiefly induced by the new-formed surfactant from organic acid in crude oil and alkaline in ternary composition system .

动态界面张力主要是由原油中的有机酸和三元复合体系中的碱发生中和反应形成新的表面活性剂造成的。

The rate at which polymer dissolved could speed up with theP-cyclodextrins make it ift the requirement of polymer solution preparation in offshore fields better .

P-环糊精可以提高疏水缔合聚合物溶解速度，使得其可以更好地满足海上油田聚合物溶液配制需求。

Iterative feedback tuning ( IFT ) control method , whose advantage is easy to implement , with excellent convergence , can tune the PID parameters .

迭代反馈整定控制方法实现简单、收敛性好，在未知系统模型的前提下，能够对系统控制器参数进行整定，使系统控制性能趋向优化。

Based on IFT and classical PID controlling theory , an IFT-PID controller , which can self-tune the PID parameters online , was developed .

迭代反馈整定方法与传统PID控制器相结合，构成一种IFTPID控制器，该控制器能够实现在线自整定。

Also , the IFT of water and oil , surfactant slug size , injection rate and injection opportunity on reducing injecting pressure and improving EOR efficiency are investigated .

同时系统研究了油水界面张力大小、表面活性剂段塞大小、注入速度以及注入时机对低渗岩心降压增注和提高采收率的影响规律和特征。

By the experiment , we came to the conclusion that the 3-D IFT 's transitive Reynolds number of flow states is decrease more rapidly than smooth tube 's.

实验结果表明：肋螺旋排和肋顺排三维内肋管各流态区相应的转换雷诺数较光管有较大的降低。

The oil displacement efficiency for the minimum dynamic IFT value of 0.01mN/m is almost equal to that for equilibrium IFT value of 0.001mN/m .

动态界面张力最低值达到0.01mN/m时，体系的驱油效果与界面张力平衡值达到0.001mN/m时基本相同。

The experimental results show that surfactant not only reduces IFT , but also accelerate the emulsification of oil ; salt is sensitive to the phase behavior changes of the compound system .

实验结果表明，表面活性剂除了能降低界面张力外，还有利于增加体系的粘度，碱能促进原油的乳化，盐对复合体系相行为变化比较敏感。

The experiment results showed further that salt can compress the double layer of ASP system and its concentration is quite sensitive to interfacial tension ( IFT ) and middle phase .

利用正交设计法对影响三元复合体系相行为的各主要因素进行极差分析，发现盐可以压缩复合体系的扩散双电层，含盐度对界面张力和中间相体积等具有相当高的敏感性。