1) pressure drop
压降
1.
Calculation and error analysis of pressure drop of gelled propellant simulants in the pipe;
凝胶推进剂模拟液直圆管压降计算及误差分析
2.
Effect of pressure drop grading structure of feed nozzle for catalytic cracking process on atomization;
催化裂化进料喷嘴压降分级结构对其雾化效果的影响
3.
An experiment investigation on the pressure drop for oil drop dispersed flow through horizontal pipe;
水平管内油滴分散流摩擦压降特性的实验研究
2) pressure loss
压降
1.
Based on what had been done previously in the aspect of pressure losses across perforation and gravel pack, the paper presents a new formula to calculate the pressure losses across perforation and gravel pack,and calculates the skin factor through the introduced popular equation of radial flow.
在以往对砾石充填井压降分析的基础上,给出了一种以普通径向流方程为基础计算井筒附近收敛流动和射孔-砾石充填段的压降,再根据完善井与非完善井压降之间的关系,求出表皮系数的方法。
2.
The method is presented to simulate pressure losses and flow velocities in skewed narrow annular geometries for laminar,transition and turbulent non-Newtonian flow.
提出了关于变偏心度环空中计算非牛顿流体在层流、过渡流及紊流状态下压降、流速的方法；给出了流场特性分析及数值模拟结果。
3.
Experiments were done to contrast the heat tansfer enhancement and pressure loss caused by several single-pare vortex generators(VGs) such as delta winglets,rectangular winglets,trapeze winglets,bevel-cut half-cylinder VG and bevel-cut half-elliptical column VG,which were installed in a rectangular tunnel respectively.
在雷诺数为4000～38000的紊流范围内对矩形风道内分别布置单排一对直角三角翼、矩形翼、梯形翼、斜截半圆柱体、斜截半椭圆柱体等涡流发生器的强化传热效果和压降特性进行了对比实验。
3) pressure-drop
压降
1.
The difference of pressure-drop whether the particles were precharged or not for the mem-braned fibre filter was compared experimentally.
通常人们采用不可压缩模型描述纤维表面过滤压降变化。
2.
And experimental results indicate that both visco-temperature turning point and pressure-drop turning point are basically accordant to each per-condensation crude.
实验结果表明 ,三种原油的粘温特性相似 ,各种原油管道输送压降拐点与其粘度拐点温度基本一致 ,只要输油管道末站油温≮ 2 6℃ ,便可安全输送。
3.
The direct relationship between liquid water removal and pressure-drop between inlet and outlet of the channel was obtained.
通过直条单流道可视化PEM单池研究了阴极流道内液态水的传递行为,给出了液态排水与流道进、出口压降间的直接关系。
4) pressure fall
压降
1.
Research on carried solution and pressure fall in liquid desiccant packed towers;
液体除湿填料塔液体夹带和压降问题研究
2.
The craft pipeline net and devices from first-order air evacuation to second-order air admission in the compressor system at Hekou compressor station are analyzed from the aspect of pressure fall at different stages, thus finding out the key to the problem of pressure fall in compressor system.
对河口压气站压缩系统的一级排气至二级进气的工艺管网和设备进行分段压降分析,从中找出压缩系统压降存在问题的关键。
3.
Based on the continuity equation and the momentum equation, the pressure fall models of wellbore flow within an open-hole and a perforated completion snaky well bore are e.
研究了蛇曲井井筒流动特征,对蛇曲井微元段和孔眼段的流动进行了分析,根据质量守恒原理和动量定理,建立了裸眼完井和射孔完井方式下蛇曲井生产井段的井筒压降预测模型。
5) pressure drawdown
压降
1.
And the velocity of pressure drawdown of the gas reservoir numerical simulation is caused to be tooslow.
由Hall图版经验公式法计算得到的岩石压缩系数偏大,即对地层岩石的弹性能量估计偏大,从而导致气藏数值模拟计算的压降速度偏慢;而采用弹性模量法计算岩石压缩系数,其结果相对较为合理。
2.
Due to a combination of factors such as the arrangement of hydrogen usage process,pre-hydrogenation booster\'s capacity,feedstock impurities and the existence of iron-bearing substances in the system, the pressure drawdown of the pre-hydrogenation system of the catalytic reforming plant of SINOPEC Jiujiang Company increased loo fast.
九江分公司催化重整装置由于用氢流程的安排、预加氢增压机能力、原料杂质、系统的含铁物质等原因,预加氢反应系统存在压降上升过快现象,影响了装置长周期稳定运行。
6) Drawdown
[英]['drɔ:daun] [美]['drɔ,daʊn]
压降
1.
Analysis of influential factors of drawdown and liquid holdup in multiphase conduit flow;
多相管流中压降和持液率的影响因素分析
2.
A coalbed gas injection or drawdown test is controlled the injection displacement by an overflow valve.
煤层气注入 /压降测试采用溢流阀控制注入排量。
补充资料：压降
分子式：
CAS号：
性质：流体在管中流动时由于能量损失而引起的压力降低。这种能量损失是由流体流动时克服内摩擦力和克服湍流时流体质点间相互碰撞并交换动量而引起的，表现在流体流动的前后处产生压力差，即压降。压降的大小随着管内流速变化而变化。
CAS号：
性质：流体在管中流动时由于能量损失而引起的压力降低。这种能量损失是由流体流动时克服内摩擦力和克服湍流时流体质点间相互碰撞并交换动量而引起的，表现在流体流动的前后处产生压力差，即压降。压降的大小随着管内流速变化而变化。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条