膨胀比

测定了不同配比共混物熔体的非牛顿指数和膨胀比。

Non-Newtonian index and die swell ratio of the melt with various composition of the blends were measured .

带载状态下CFRP约束混凝土圆柱膨胀比试验研究

Experimental study on the expansion ratio of preloaded circular concrete columns with CFRP confinement

在低pH值或高pH值时水凝胶的膨胀比下降。

The swelling ratio of the hydrogel decreases obviously at the lower or higher pH.

GTO混炼胶的b型膨胀比（B）略小于其它两软化剂胶料，挤出物表观并无明显差异。

There was no obvious difference between the appearance of extrudates of two compounds .

研究了温度、盐的浓度、溶液的pH值及蛋白质对水凝胶的膨胀比的影响。

The effects of factors on swelling ratio of the hydrogel , such as temperature , pH , and the salt concentration , were studied .

应用该模型和标准k－ε模型计算了两种不同膨胀比的后台阶分离流。

Several backstep separated flows with two different expansion ratios are numerically studied by using the above model and a standard K - ε model .

入口压力降（ΔPen）、入口弹性贮能（e）和口模膨胀比（B）均随着剪切应力的增加而呈线性函数形式增大。

The entry pressure drop ( Δ P en ), entry elastic stored energy ( e ) and die swell ration ( B ) increased nonlinearly with increasing shear stress .

本文对WP6涡轮部件按照折合转速及膨胀比相等的准则设计了两套实验方案，并对设计状态及设计的两套实验方案进行了S2正问题计算和S1流面计算。

Two experimental plans were designed according to the rule of equality in the characteristic rotating speed and expansion ratio . The S2 calculation and S1 calculation were carried out for design condition and two experimental plan designed before .

结果表明：与300K时相比，1000K高温床的临界流化风速有所提高，压降脉动及床层最大膨胀比明显降低。

It shows that minimum fluidizing velocity is improved at 1 000 K , whereas degree of pressure fluctuation and bed expansion ratio are obviously decreased compared with 300 K.

在以上分析的基础上，应用Euler-Euler模型对D类颗粒的流化过程进行了模拟，并从流化状态、床层膨胀比、床层压降及功率谱几方面与实验进行对比。

Base on analysis above , the fluidization process of mono-diameter Geldart D particles has been studied experimentally and numerical simulated with Euler-Euler model using numerical solutions of two dimension and three dimension , respectively .

高膨胀比涡轮的发展及气动设计研究的若干问题

Development of High Expansion Ratio Turbine and Some Problems of its Aerodynamic Design

高温、高膨胀比必然带来涡轮内部流动的局部超声速。

High temperature and high expansion ratio lead to local transonic in the turbine .

非对称大膨胀比喷管研究

Investigation of single expansion ramp nozzle

射流在固定几何尺寸的条件下，存在最大可振荡膨胀比。

There is a maximum oscillation expansion ratio of jet flow in the fixed geometrical sizes .

低雷诺数和低膨胀比涡轮&压气机组件的设计技术研究

Study on design technology of turbine & compressor with low Re number and low expansion ratio

管内天然气溢流膨胀比在环空快；

The expansion of the gas spill in the pipe is faster than in the annular space ;

研究了不同控制管长，不同膨胀比的操作条件下振荡频率、温降的关系。

Under different controlling pipe length and pressure ratio , the oscillation frequency and temperature drop are studied .

另外，计算了标度因子的膨胀比和弦耦合常数的变化比。

Moreover , the expansion ratio of scale factor and the variation ratio of string coupling constant are calculated .

最后，通过实验对这种新型的索引方法进行验证与分析，实验结果表明，该方法提高了查准率，并有效降低了索引的膨胀比。

The experimental result shows that this method can improve the precision and effectively reduce the expansion ratio of index .

自由膨胀比测定新方法在胜利油区砂岩储层评价中的应用下部油层防砂绕丝筛管

Application of the Relative Free Swelling Ratio Testing of Clay Minerals in Sandstone Reservoirs Evaluation in Shengli Oil Field , China

与常规涡轮不同的是，跨音速高膨胀比涡轮的流场组织可能更复杂。

Different from the conventional turbine , the flow field organization in high expansion ratio transonic turbine may be more complicated .

膨胀比为3时，进口压力的增加基本不影响涡流管的制冷性能，而膨胀比为6时，随着进口压力的增加，涡流管的制冷性能显著提高。

Under a fixed bigger expansion ratio , the cooling performance of the vortex tube increases with the increase of the inlet pressure .

随着叶轮机械向高膨胀比、高效率的方向发展，叶轮机械级内部越来越多地出现跨音速流动现象。

With the high expansion ratio and high efficiency development of turbomachine , the transonic flow phenomenon appears in turbomachine more and more .

在一定的膨胀比下，液含率随着轴向高度的增加而增加，存在较明显的不均匀分布。

At a fixed expand ratio , the axial voidage of the bed increased with the increase of bed height , with heterohomogeneous distribution .

尤其是在变工况的条件下，跨音速高膨胀比涡轮的流动特性与亚音速涡轮差异更大。

Especially in the condition of off-design conditions , the flow characteristics in high expansion ratio transonic turbine are greatly different from subsonic turbine .

分析流化床内床层压降随操作空气速度的变化关系，确定流化床初始流化速度以及膨胀比，结果与前人实验结果吻合；

The relationships between bed pressure loss and the bed bottom-air velocity are figured out , calculated results are fairly in good agreement with formerly experiment data .

参考定容积膨胀比膨胀机性能（螺杆式膨胀机）的研究方法，对涡旋式膨胀机进行了效率分析和实验研究。

And in terms of the study way of the screw expander , efficiency analysis and experimental studies on the scroll expander are given in the thesis .

一次喷管面积膨胀比的变化，不会影响二次引入流量，但会改变混合效果。

5 , the change of area expansion ratio of the primary nozzle will not effect second mass flow rate . But it will change the mixing efficiency .

分别以循环功和效率为目标，对压缩比、转换比、过膨胀比进行优化并得到一系列优化结果；

Taking the work output and efficiency as objectives , a series of optimal results are obtained by optimizing the compression ratio , changeover ratio and over-expansion ratio .

控制管和振荡管内的波幅随着膨胀比的增加均增大，因此气波机的等熵制冷效率逐渐增大。

Pressure amplitude in the controlling tube and the oscillating tube increases with the increasing expansion ratio . Therefore the isentropic refrigeration efficiency of gas wave refrigerator increases gradually .