查询词典 fluid

The visco?-elastic fluid hydrodynamic theory was applied to the wear-resistance experiment on sucker rods.The values of normal stress in suck string generated by visco?-elastic fluid and eccentricity brought out by sucker string were measured quantitatively.The partial abrasion of sucker string and tube in oil well was caused from the normal stress of visco?-elastic fluid.A module for bending analysis of sucker rod in cross direction and wire direction was developed.

大庆油田实施聚合物驱油以后，出现了抽油杆受力状况恶化、抽油杆柱严重偏磨的现象，为此开展了粘弹性流体水动力学理论和试验研究，得出了粘弹性流体在抽油机井筒内的流动规律及对抽油杆柱法向应力的影响规律，定量测出了粘弹性流体对抽油杆柱的法向应力值和抽油杆柱产生的偏心率。

Through the dynamic simulation test of the indoor autoclave, the law of the influence of oxygen content, drill fluid temperature, drill fluid flow velocity and the salt concentration of the drill fluid on the oxygen corrosion rate of the S135 drill pipe steel was studied separately in order to investigate the relatio...

为研究腐蚀因素与腐蚀速率的关系，通过室内高压釜动态模拟实验，分别研究了钻井液中含氧量、钻井液温度、钻井液流速和钻井液盐浓度对S135钻杆钢的氧腐蚀速率影响规律。

vanced a new approach to measure the coefficient of viscosity with the method of falling balls , and explained the movements of falling balls of the same diamters in viscose fluid in tubes of different diameters and falling bahs of different diameters in viscose fluid, as well as the whole process of movements of falling balls in viscose fluid.

文摘：给出了一种落球法测液体粘滞系数的改进方法；并对小球在不同管径内的粘滞液体中的下落运动、不同直径的小球在粘滞液体中的下落运动以及小球在粘滞液体中的整体运动过程等进行研究。

Compressible fluid with non-return valve Although the use of compression fluid valve pipeline aims to reduce the impact valve flap to a minimum, but can not be compressed fluid selection method with a similar valve to Flanged Ball Check Valves choose.

压缩性液体用止回阀尽管压缩性流体管路选用止回阀的目的在于使阀瓣的撞击减小到最小程度，但可以根据不可压缩性流体用止回阀的类似选择方法来进行选择。

Compressible fluid with non-return valve Although the use of compression fluid valve pipeline aims to reduce the impact valve flap to a minimum, but can not be compressed fluid selection method with a similar valve toFlanged Ball Check Valves choose.

压缩性液体用止回阀只管压缩性流体管路选用止回阀的目的在于使阀瓣的撞击减小到最小水平，但可以按照不成压缩性流体用止回阀的近似选择方法来进行选择。

The design changed mixture gas into two phase fluid after the third compression,then the two phase fluid was delivered to the high pressure gas-fluid separator....

使甲烷和二氧化碳的混合气经第三级压缩后，在冷却管道内变成气液二相流，再将二相流组分引入高压液气分离器，分离出液态二氧化碳，同时将高品质甲烷送入第四级气缸进行压缩。

The design changed mixture gas into two phase fluid after the third compression, then the two phase fluid was delivered to the high pressure gas-fluid separator. Nearly all the Carbon dioxide was separated there, meanwhile, the high quality Methane was delivered to the forth air cylinder.

使甲烷和二氧化碳的混合气经第三级压缩后，在冷却管道内变成气液二相流，再将二相流组分引入高压液气分离器，分离出液态二氧化碳，同时将高品质甲烷送入第四级气缸进行压缩。

In this dissertation the"Penalty"finite element method was employed to compute the velocity of the three-dimensional flow of power-law fluid in a profile die. In order to decrease the needed computer memory and raise the stability of numerical simulation, a set of decoupled methods such as PFEM, pseudo-body force method and transformation of momentum equation to the elliptic equation was developed to establish the general finite element equations to compute the distributions of velocity and viscoelastic stress of the three-dimensional viscoelastic flow of the Phan ThienTanner fluid in a profile die. During numerical simulation of the extrudate swell of the PTT fluid, the flow in the die and out of the die was analyzed separately, which demands less computer memory.

本文建立了求解挤出口模内幂律流体流动速度场的通用三维罚有限元模型；对于非线性粘弹性的Phan Thien-Tanner流体，为了降低模拟计算对计算机硬件的要求，并使模拟计算更加稳定，采用了一种去耦算法，包括罚有限元方法、拟体力方法和动量方程的椭圆类方程转化方法，并建立了求解速度场和粘弹性应力场的总体有限元方程；对于PTT流体的挤出胀大问题，提出了挤出胀大熔体口模内外分离模拟法，这样可以显著降低数值模拟对计算机硬件的要求。

In this dissertation the"Penalty"finite element method was employed to compute the velocity of the three-dimensional flow of power-law fluid in a profile die. In order to decrease the needed computer memory and raise the stability of numerical simulation, a set of decoupled methods such as PFEM, pseudo-body force method and transformation of momentum equation to the elliptic equation was developed to establish the general finite element equations to compute the distributions of velocity and viscoelastic stress of the three-dimensional viscoelastic flow of the Phan ThienTanner fluid in a profile die. During numerical simulation of the extrudate swell of the PTT fluid, the flow in the die and out of the die was analyzed separately, which demands less computer memory. The key techniques used in numerical simulation of the three-dimensional extrusion from dies such as decision of boundary conditions, creation of initial velocity field, selection of penalty factor, high Weissenberg number problem , regeneration of the free surface were studied in detail.

中文题名聚合物异型材口模挤出三维流动研究副题名外文题名 Study on three-dimensional flow of polymer melts during the process of profile extrusion from dies 论文作者涂志刚导师柳和生包忠诩教授学科专业材料加工工程研究领域\研究方向学位级别博士学位授予单位南昌大学学位授予日期2001 论文页码总数148页关键词挤出成型聚合物材料挤出口模聚合物异型材馆藏号BSLW /2003 /TQ320 /9 本文建立了求解挤出口模内幂律流体流动速度场的通用三维罚有限元模型；对于非线性粘弹性的Phan Thien-Tanner流体，为了降低模拟计算对计算机硬件的要求，并使模拟计算更加稳定，采用了一种去耦算法，包括罚有限元方法、拟体力方法和动量方程的椭圆类方程转化方法，并建立了求解速度场和粘弹性应力场的总体有限元方程；对于PTT流体的挤出胀大问题，提出了挤出胀大熔体口模内外分离模拟法，这样可以显著降低数值模拟对计算机硬件的要求。

Material is one-time 30~50ml injector 1 pair, one-time glove 1 pair, rubber cap 1 (one-time infusion implement the rubber cap) that go up, the 100~150ml of nose raise fluid that already had had is filled inside clean container, temperature 38~40 ℃. 2 methods little patient takes right skew slope, handlers is abluent both hands wears a glove, open one-time injector, the 50ml injector piston after deciding gastric canal is inside the stomach is abandoned, the tit joins the stomach is in charge of, nose raise fluid is slow enter injector inside, raise gastric canal to come fore-tooth 10~20cm height, have the aid of of fluid of raise letting bazoo is gravitational slowly flow into a stomach inside, warm boiled water rinses conduit after the end, cover with rubber cap finally on the stomach provides terminal. 3 advantages (1) operation goes to the lavatory simply.

为减少误吸的发生，将传统的鼻饲法进行了改良，经临床应用效果满足，现报告如下。1材料一次性30~50ml注射器1副，一次性手套1副，橡皮帽1只(一次性输液器上的橡皮帽)，清洁容器内盛已备好的鼻饲液100~150ml，温度38~40℃。2方法患儿取右侧斜坡位，操作者洗净双手戴上手套，打开一次性注射器，确定胃管在胃内后将50ml注射器的活塞弃去，乳头连接胃管，鼻饲液缓慢倒入注射器内，提高胃管至门齿10~20cm高度，让鼻饲液借助重力缓缓流入胃内，结束后温开水冲洗管道，最后用橡皮帽套上胃管末端。3优点(1)操作简单方便。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。