查询词典 solution pressure

To study the feasibility of a new type of sealing fabrication for high pressure, the deformation equation of cylinder-plunyer system at high pressure was derived. Several feature curves were obtained using the numerical solution of Reynold's function.

为探讨一种新型超高压密封结构的可行性，对超高压下钢筒和柱塞的变形量进行了理论推导，通过雷诺方程数值求解，获得了新型密封结构的漏耗特征曲线、液膜压力分布曲线及初始间隙对泄漏量的影响曲线。

Considering gas-solid flow in annular space and BoYun Guo's hydrodynamic parameters model, For aired underbalanced drilling, combined with the minimum energy Angel law and based on the mininum gas injection scale at the key points, it is established a bottom-hole pressure model for gas-solid two phase stream; meanwhile, calculated the downhole depth of the Downhole-Deployment-Valves; and then fabricated the corresponding calculation software. For streamingly underbalanced drilling, it is fully given a step-by-step solution based on analysis from the relationship of various wellbore pressures at the course of underbalanced drilling as well as from the streaming behavior in different wellbore sections, adding consideration on multiphase stream pressure drop and Downhole-Deployment- Valve into account, it is of common application for development wells.

对于气体欠平衡钻井，考虑环空为气固两相流，参考BoYun Guo的流体力学参数计算模型，结合Angel的最小动能法标准，从满足关键点处的最小注气量入手，建立了气固两相流的井底压力计算模型，同时对套管阀的下入深度进行了计算，并利用VB语言编制了相应的计算软件；对于液体欠平衡钻井，考虑环空为多相流，在充分分析欠平衡钻井井内基本压力关系的基础上，从环空多相流压降分析入手，通过对井筒内各段的流态分析，逐段求解。

This essay gives an introduction to the recondition scheme of cambered axle equipped with big-diameter gear wheel, and determines the in and out pressure existing when cambered axle is equipped with gear wheel, as well as its out-pressure project which serves as a solution to the unsettled problem in the course of cambered axle recondition.

介绍装配大直径齿轮曲轴的修复方案，确定曲轴与齿轮装配时压入力、压出力以及压出方案，解决曲轴修复过程中加工设备难已满足的问题，为冶金行业曲轴的修复利用开辟了一条新的途径

In this experimental conditions, the VEC had not damnified obviously by perfusion with IECS in 4 hours. The pulmonary vascular resistance could decreased by POE1 and so vascular endolhelial cells would be protected. Mannitol not only increase osmotic pressure but also cleanse OFR. The addition of mannitol, POE1, glucose and osmotic pressure to IEC solution contributes to reduce the quantities of OFR.

2在本实验条件下所采用的IECS进行犬肺灌洗、离体保存4h之内肺血管内皮细胞无明显损伤，PGE；具有保护肺血管内皮细胞的作用；甘露醇具有增加渗透压和清除自由基的作用；灌洗前肺动脉内注射PGE；及增加 ECS渗透压和代谢底物、提高PH值使之略微偏碱均有助于抑制供体肺离体、低温、冷缺血保存期间OFR的产生。

A solution to the elevation influence problem is proposed,which includes unbolting the oil charging screw of SF6 gas density relay in field,and retightening it as the gas pressure inside the shield equals to atmospheric pressure,then conducting test and putting the delays into operation.

并提出了解决措施：在现场应将SF6密度继电器的充油螺丝打开，使其表壳内的气体与当地大气压平衡，然后再拧紧，再进行检验、投入使用；对高海拔地区SF6电气设备的充气压力及SF6密度继电器动作值应进行修正。

They can calculate the earth pressure of each movement magnitude, and they can avoid getting lower earth pressure using Coulombs solution that will lead to decrease the safety of the structures in design.

采用考虑墙体位移模式和位移量的土压力计算方法能较好地反映挡土墙实际工作条件下的位移情况，并且能计算任意墙体位移下挡土墙上的土压力，避免了采用库仑主动土压力理论计算得到土压力偏小而使设计安全度降低的缺点。

In the couping solution, based on the characteristics of the models in this dissertation, each of loading step is finished in unit time. Thus the volumetric strains on the current increment step as analysis parameters are inserted into the equation of continuity and a physical equation for pore water pressure is presented. The fundamental solutions of two kinds of classic problems (axial symmetry and plane strain) are derived. By use of the fundamental solutions of pore water pressure combined with finite element method of soil mechanics, a semi-analytical and semi-numerical method for nonlinear consolidation equations is presented.

在耦合分析中，根据本文模型的特点，将每一荷载增量步看作单位时间完成，对应当前增量步的体变分量作为分析参数代入连续方程，建立了基于数值模型的孔压变化方程，根据工程中最常见的两类问题推导出基本解，结合土骨架的控制方程建立了此类液-固耦合问题的半解析半数值解答体系，编制了有限元程序，从而实现了从建立本构关系到模拟固结问题的全数值方法。

As to multi-layer reservoirs,each layer can be divided into three areas:area of gravel-packing,area of perforation and area of radial flow.Each area has its own governing equaiton and the solution is expressed by Green function.The well bore pressure and layer-rate is given through Green function in Laplace space.The pressure drop and skin factor isobtained also in each area.

根据多层砾石充填完井的渗流特点，将每个产层在径向上分成3个区域，即砾石充填区、射孔区、地层径向流区，每个区域有各自的渗流方程，对n层油藏有3n个渗流方程，将每个区域的方程用Green函数来表示，由各层的Green函数得到井筒混合压力、分层压力及分层产量在Laplace空间上的解，最后得到每层各区域的压力损失、表皮系数以及井底压力和分层产量与时间的变化关系。

The results shows that the flow characteristics of SiC-AlN granulated powder is obviously promoted after spray drying and a suitable particles grade match. With the increasing of pressure, the density of green body increases by the style of ladder at the pressure range of 4080 MPa, 80160 MPa and 160220 MPa, the green body is uniform and densification without hard pelleted particles above 160 MPa. The pressureless sintering SiC-AlN multiphase ceramic possesses superior sintering properties and mechanical properties. It is due to the rampart formation of AlN to SiC grain growth and the reaction of SiC and AlN to form 2H solid solution. It results in the grain fining, crack expansion producing bypass and deflection, fracture section producing tearing-open and pulling-out effects, which cooperatively improves the strength and fracture toughness of the multiphase ceramics.

结果表明：喷雾造粒后，复合粉体的流动特性显著提高，粒度级配合理；随着压强增加，坯体密度在40~80、80~160和160~220 MPa范围内呈现阶梯式增长，160 MPa以上成形后素坯均匀致密，无硬球颗粒存在；无压烧结SiC-AlN复相陶瓷具有优越的烧结性能和力学性能，这是由于AlN对SiC晶粒形成生长势垒，并反应生成2H型固溶体，从而细化晶粒，导致裂纹扩展产生了绕道与偏转效应，呈现晶粒撕裂与拨出现象，协同改善了复相陶瓷的强度及断裂韧性。

The following are main contents studied: A finite element method for Navier-Stokes equation with ALE formulation is considered and by combined with theNewmark method of numerical intergration a pressure correction scheme is obtained for the solution of the FE formulation of N-S equation. Because the incompressibility condition can be satisfied approximately in this scheme, the interpolation functions of elements can be equalorder for the velocity field and pressure field. In the ALE formulation the fluid-solid interaction analysis became a three-field coupling problem of the fluid field, the solid field and the fluid dynamic mesh. The properties and charactiristices of this three-field coupling problem are deeply discussed.

研究的主要内容有：主容器中流体大晃动是一种强非线性问题，文中研究了求解ALE描述的粘性流体N-S方程的有限元方法，以有利于大晃动自由液面的跟踪和流体大晃动中非线性现象的描述；并结合Newmark数值积分法推出了求解ALE型N-S方程的压力修正解法，由于这种解法可以近似满足不可压条件，因此可以采用速度场和压力场等阶插值的有限元离散格式，从而较好地解决了普遍采用的不等阶插值解法中，速度场和压力场数值精度不一致、程序编制不便等的不足。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。