It is found that the fluid flow maldistribution is very serious for conventional header while the improved header configuration with punched baffle can effectively improve the performance. 实验结果表明,原始封头内部的物流分配存在严重的不均匀性,采用添加打孔挡板之后的改进型封头,流场的不均匀性有了很大的改善。
Numerical Investigation of Fluid Maldistribution of Shell-side of Shell-and-Tube Heat Exchanger with Longitudinal Flow 轴流管壳式换热器壳侧流体优化分布数值研究
We used data from the Kenya Health Workforce Informatics System on the nursing workforce to determine the effect of the Emergency Hiring Plan on nurse shortages and maldistribution. 利用来自肯尼亚卫生人力信息系统的护士人力数据来确定紧急护士招聘计划对护士短缺和分布不均产生的影响。
At the point of the blade fracturation the velocity is maldistribution and changes bitterly, form bigger spiral circumfluence area at the shroud, and the flow loss increases. 叶片断裂处速度分布不均匀、变化较剧烈,在叶顶处形成了较大的回流区,流动损失加大。
Isothermal integral reactor for evaluating catalyst with active constituent maldistribution 用于活性组分分布在颗粒表层的催化剂评价的等温积分反应器
The water resource in XinJiang has the characteristic such as maldistribution and complicate composition. 新疆水资源具有分布不均、成分复杂等特点。
Flow distributions of header configurations in plate-fin heat exchangers with particle image velocimetry ( PIV) The correlations of the flow maldistribution characteristic with Reynolds number are obtained under different header configurations. 得到了不同封头结构的物流分配不均匀特性与雷诺数之间的关系式.利用粒子图像测速仪(PIV),对板翅式换热器封头结构改进前、后的流场进行了可视化研究分析。
Effect of Flow Maldistribution on the Performance of Radial Flow Converter 不均匀流动对径向氨合成塔性能的影响
The ratio of doctor to nurse 1: 0.84. Conclusion Shiyan community health service institutions configuration and the total amount of medical service human resource accords with national standard, but exits the situation of maldistribution, and shows a lack of general practitioner. 结论十堰市社区卫生服务机构配置和卫生服务人力资源总量符合国家标准,但存在着分布不均的情况,全科医学人才缺乏。
The influence of maldistribution on the number of theoretical stages in packed columns at partial reflux 填料精馏塔在部分回流时回流分布不均匀对理论塔板数的影响
Nitrification and denitrification accord with the theory of maldistribution of DO and theory of deficiency of oxygen in microenvironment. 膜生物反应器中同步硝化反硝化的发生符合反应器溶解氧分布不均理论以及缺氧微环境理论。
Compared with the control, the expression of Bcl-2 in all experimental groups was down-regulated ( P < 0.01) and the granules were stained weak and maldistribution. 实验组心肌细胞中Bcl鄄2的表达弱于对照组(P<0.01),且分布不均;
Influence of Maldistribution on Breakthrough of Fixed Bed Adsorber 边流效应对固定床吸附容量的影响
In order to lessen the effect of flow maldistribution on the experimental results, a measurement method was put forward to study the flow distribution in the heat exchanger by determining the temperatures of fluids. 为了减少流动不均一分布对实验结果的影响,本文用测温法对换热器内流体流动分布进行了研究。
The correlations are experimentally given for the modified coefficients of momentum-friction, resistance factor and the maldistribution factor. A design procedure for Ladder distributor is proposed. 基于实验结果,提出动量、摩擦修正系数K,阻力系数ξ和不均匀度M1的实验关联式,并提出了一个排管式液体分布器的设计方法。
Flow maldistribution has small effect on the performance of the 3 beds radial flow converter, and compared with the ideal flow, the yield just drops 2 percent when the degree of maldistribution reaches 70% in computation condition. 流动不均匀对三段径向合成塔净值和生产能力的影响是有限的,在计算条件下,均匀流动和不均匀度高达70%相比,生产能力只下降了2%。
It is also found out that more maldistribution of flow drag would be caused by maldistribution of flow. 还发现物流分配的不均匀性会导致流动阻力分布更加不均匀。
Flow maldistribution parameter S_ ( U) and the ratio of the maximum velocity to the minimum velocity θ_U of the type C header configuration were minimum. C型封头的不均匀参数SU和最大流速与最小流速之比θU最低;
The war caused the reduction of population, the transformation of the culture resources and maldistribution of historical personage. It finally led to the fact that Chinese culture and education development center moved from central plains areas to southeast areas after the South Song Dynasty. 战争造成了中原地区人口数量减少,导致了中原文化资源的转移和历史人物的分布不均,最终导致南宋以后中国文化和教育发展重心由中原地区转至东南地区。
The water resource of our country has regional maldistribution. The water and soil resources are not matched. 我国水资源具有地区分布不均,水土资源不相匹配;
The middle reach of Yellow River is located in a transition zone from semi-humid to semi-arid area, with weak ecological environment, the maldistribution of underlying surface, and is one of ecologically fragile zone where is sensitive to global climate change. 黄河中游地区位于半湿润到半干旱地区的过渡地带,生态环境脆弱,下垫面分布不均,是全球气候变化反应敏感的生态脆弱带之一。
However, the source of the corneal grafts are deficit and maldistribution, It is not satisfied the demand on the multitudes of corneal transplant patients and dealing with emergency operation. 但是目前角膜移植材料来源短缺及各地区材料分布不均匀,临床上往往不能满足角膜移植患者量多和应付急诊手术的要求,故对有限移植材料的保存日益受到人们的重视。
The experimental results show that the algorithm has good effect of de-noising. ( 3) Analyze the quality maldistribution of the palm vein image. 实验结果表明本算法去噪效果良好。
Meanwhile, because of the resource maldistribution of sand of our country, the sand for building is about more than 3 billion tons every year, the consumption is very enormous, the contradiction causing sand resources in short seems outstanding day by day. 与此同时,由于我国砂资源分布不均,每年建筑用砂约为30多亿吨,消耗量十分巨大,致使砂资源短缺的矛盾显得日益突出。
The different setting of slack bus lead to the benefit maldistribution in the market. 平衡节点的设置不同将导致市场各成员的利益分配不均。
Because of the rapid growth of electricity demand and geographic maldistribution of resources, long-distance and high-capacity transmission lines have become an important part of the power system. 我国电力需求的快速增长和资源地理分布不均,使得远距离、大容量输电线路成为了电力系统的重要组成部分。
Drought and soil erosion caused by seasonal maldistribution of rainfall influenced ecological environment and agricultural production. 黄土高原地区降雨季节分布不均及土壤易侵蚀特性,造成该地区干旱频繁和严重的水土流失,已影响到该区生态环境和农业生产的稳定性。